Electricity Saving Tips For Homes And Offices

Choose right inverter for home and maintain it right to manage electricity bills

By on April 26, 2017

Power supply situation continues to be bad in India with power failures ranging from 2 to 4 hours in cities and 8 hours or more in small towns and villages. This makes it difficult to manage daily life and thus installing power backups is inevitable.

Although there are many solutions to this problem but the most common solution that most people apply in India; is to go for an Inverter-Battery system. However when somebody plans to purchase an inverter, the first question that comes to his/her mind is “which inverter to purchase?” and how one knows what suits best for its requirements. When you think of buying a new inverter, it is important to escape from the marketing gimmicks, and understand some basic related facts, eventually of much help before purchasing an inverter. Selecting the right kind of an inverter/battery system is one such important factor. And not just selecting the right inverter-battery system, it is important to select the right solution that solves your need.

In this slightly longish post, we will discuss on various power backup solutions, their pros and cons in different situations and will also help you choose the right one suitable for your need.

What are the various alternate power supply solutions?

  • Inverter: It is a simple device that stores electricity from the grid in a battery and uses the DC (direct current) power from battery and converts it into AC (alternating current) that is used by appliances. Although interchangeably used, but Inverter and UPS are slightly different and we will explain that later in this post. Inverters are generally good if you want backup for small household appliances like lights, fans, TV, computers, etc. However these days’ bigger inverters can also support Refrigerators, Washing Machines and Mixer Grinders. But then adding these big appliances significantly increases the size of Inverter-Battery system and it is best if one can avoid using them on Inverter. Using inverters for ACs is strictly not suggested.
  • DG Sets: DG sets use the power of Diesel to generate electricity. They generate instantaneous electricity rather than storing it. They are good for larger loads. So if you want to run ACs, Refrigerators, Motors, etc on power backup, then using DG set can be a good solution.
  • Solar Power: Solar PV is slowly and steadily gaining popularity and is a great way to generate power backup. Energy from Sunlight is converted into electricity and stored in batteries. However the limitations of Solar Power are similar to that of regular inverters, so they are still not the best solution for bigger loads.

Now we will cover each of them in detail in different sections of this website, but in this article, we will mainly focus on Inverter-battery system.

First understand your Power Requirement

Before purchasing any of the solutions mentioned above, the most important thing is to understand your requirement. To evaluate the power requirement, it is very important for you to know two things upfront:

  • The total load that you want to run on backup: This is essential to get the right size of inverter of power backup solution. And from size we mean the VA value. To get to the VA value, it is very important for you know the wattage (or watts) of each appliance that you want to run on the backup. More details on this are explained in the section below.
  • Total number of hours for which backup is required: This is essential to size the batteries that you need (or in DG sets the litre capacity that you need).

To give you a analogy, imagine the car or vehicle that you have. It has a certain CC capacity (like 800 CC, 1200 CC, 1500 CC), which determines the power that the car has. More power can run faster or can take more load. This is similar to the VA value of inverter, which determines the load that it can take.

The amount of fuel (storage tank capacity) a car/vehicle can store (along with its efficiency) can determine how long (distance) it can go. Similarly battery bank size determines how many hours you can get as backup.

So what do you need to know?

Look at the list of appliances that you want to run on backup and their wattage. Check the list below to get some standard values used for calculations:

  • 1 Fan – Fans Consume 75-90 Watts. For calculation we take 90 watts.
  • 1 tube light – Assume 45-50 watts for standard tube lights. 28 watts for T5 tubelights.
  • 1 CFL – 25 watts (default) or take the actual number if known.
  • 1 Television – LED TVs take 30-100 watts depending on size. LCD TVs consume 50-150 watts. CRT takes about 120 watts.
  • Set top boxes consume anywhere between 8 watts and 25 watts. Standard Definition set top boxes consume 8 Watts. HD boxes consume about 18 watts and HD DVR boxes consumed 25 watts.
  • Desktops consume 120-250 watts depending on type. Those with LCD screens consume about 150 watts and those with CRT about 250.
  • Laptops consume about 50 watts.
  • Wi-Fi routers, modems, mobile phone chargers, etc consume 5 watts or less.
  • Gaming stations and home theatre systems consume 100 watts or more depending on type and size. It should be available on product manual or on manufacturers’ website.
  • A room air cooler would be about 250-300 watts.
  • Induction cooker would be 1000-1500 watts (or 1 – 1.5 kW)
  • Mixer Grinder would also be about 350 watts.

Suppose you want 1 Fans, 1 Tube lights, 1 CFL & 1 CRT television to operate at the time of power failure, i.e. running on inverter. Therefore the total power requirement (based on table above) comes out to be (1*90 + 1*50 + 1*25 + 1*120) = 285 watts. 285 watts here is the total load (as mentioned in point 1 above)

If you want a backup of 6 hours, then you need to store 285 x 6 = 1710 Watt-hour or 1.71 kilo watt hour (or units) of electricity. This is the storage that you need (as mentioned in point 2 above).

Now the calculation above assumes that every appliance will be “switched on” at any given point in time. Taking this exact value is safe. But if you still want to economize the size (to save costs) you can multiply the values by 0.8 if the appliances are for a 1 bed room home, 0.6 for a 2 bedroom home and 0.4 for a three bedroom home (assuming lesser number of appliances will be on at any given time).

Find the VA rating of the inverter you require

Now in an ideal situation the total Watt value (sum of wattage of all appliances as calculated above) should be the same as VA value. But due to a factor called “Power Factor” (explained in this article: link), it is not the same. For a residential house we assume power factor to be about 0.7 to 0.8 (to be super safe assume 0.7 and to be economical assume 0.8). So VA value is Total load in Watts divided by 0.8. So in the case above VA value would be:

285 / 0.8 = about 356 VA

Now you may not get an inverter of exact 356 VA but you will have to go with an inverter with VA value more than 356 (say 400 VA). As it is everything is an assumption, so we assume a value that is safe.

Find the battery size that you require

Now in the example above we needed a 356 VA inverter and we want a backup of 6 hours, then the total VAh that we need is:

356 x 6 = 2136 VAh

A regular inverter battery available in market is of 12 V, so the Ah value of battery required would be:

2136 / 12 = 178 Ah

If you go the market to purchase a battery then the first thing that you need to look at is the Ah value, which is representative of how much energy a battery can store. Typical Ah value of inverter batteries in market are: 100 Ah, 120 Ah, 150 Ah, 180 Ah, 200 Ah.

So in our example a 180 Ah battery would be ideal for the system.

What about bigger appliances?

Appliances like Refrigerator and Air Conditioners have motors in their compressors that need huge amount of current to start (unless you have inverter technology refrigerator or air conditioner). This significantly increases the VA and size requirement for an inverter.

A typical 250 lts refrigerator has a compressor which in steady state would consume about 300-350 watts, but just because it needs more current to start up, one would need about 2.5 kVA inverter to support such refrigerator. However because the compressor starts and stops as per the cooling needs, the total energy consumption per day for a refrigerator would only be about 1.5-2 units or kWh per day. So including a refrigerator in the appliance mix increases the size of the inverter significantly, but not of the battery.

Also the reason we do not recommend including Air Conditioners on inverters is because the demands of air conditioners is quite high. A 1 ton AC which typically consumes 1000 watts (or 1 kW) would need 3.5 kVA inverter just to manage its starting load. A 1.5 ton AC consumes 1500 watts and needs 5 kVA inverter to manage its load. The electricity consumption of ACs is also quite high, and a 1 ton AC would consume about 0.8-1 unit of electricity in an hour and a 1.5 ton would consume about 1.5 units in an hour. So number of batteries needed also significantly increase if you put AC on inverter.

Note: Inverter technology Refrigerators and ACs do not need high amount of current to start and thus if you have an appliance with inverter technology, then you can include AC or Refrigerator in the sample calculations (of other appliances) as above (and need not worry about high kVA value).

Issues with longer backup needs and Voltage of Inverter.

Many people have long power cuts (8-10 hours) and in such case, setting up inverters becomes difficult unless the load is less. As we have seen above, typical batteries available are of 12 V and of size 100 Ah, 120 Ah, 150 Ah, 180 Ah and 200 Ah. If for longer backup you need about 400 Ah battery storage, then you will have to go for two numbers of 200 Ah batteries. But this brings another challenge: that of Voltage of Inverter.

Typical small inverters (less than 1400 VA) are generally of 12 V. Which means you can either connect only 1 battery or if you want to add more batteries then you have to put them in parallel (as shown below).

Source: www.gizmology.net

Batteries in Parallel (Source: www.gizmology.net)

But typical charging current of an inverter is about 10-15 Amp. Which means if you have one number of 200 Ah battery then it will charge in:

200 Ah / 10 A = 20 hrs

If you put two such batteries in parallel then the current will divide into two parts and thus charging time will become:

200 Ah x 2 / 10 A = 40 hrs

In such case if you have power cuts every day, then the battery itself will not charge in a full day. In fact if you put a 200 Ah battery and you need 10 hrs backup, then that itself will not happen because charging time is 20 hrs.

Solution

A possible solution is to go for an inverter with higher Voltage (say 24 V or 48 V or more). In canse you go for a 24 V inverter system, then you can connect batteries in series (as shown below), which does not divide the current (same amount of current charges both the batteries).

Batteries in Series (Source: www.gizmology.net)

Batteries in Series (Source: www.gizmology.net)

So if you need 200 Ah backup, then you can go for two numbers of 100 Ah batteries and put them in series. And the charging time will be

100 Ah / 10 A = 10 hrs

But then inverter with higher voltage are of higher VA value. Like 24 V system starts with 1400 VA onwards.

So it is important to go for right Voltage inverter.

What is “C rating” of batteries?

Although it is irrelevant to think about this while buying batteries, but we have got questions on it in past. If you are not curious, you can choose to ignore this section.

But if you are curious then the C rating (or the coulomb rating) of the battery (or cell), is the measure of the quantity of charge in a fully charged cell. The Coulomb capacity is provided in AH or Amp Hour unit. In other words, we can say that the C rating of a battery indicates the continuous current drawn (in amps), the cell will support. By multiplying the C rating with the cell capacity in milli-ampere-hours (mAH), the continuous current in milli-amperes (mA) of a cell can be determined. For example, in a 1,000 mAH battery with a C20 rating, the continuous current that may be drawn out of the battery is 1,000 mAH x 20 = 20,000 mA, or 20 amps (A) (divide by 1000). Keep in mind that 1,000 milliamps equals one amp. So from the above calculation, we ascertain that the battery will produce 20 amps of continuous discharge.

However, a C20 rating battery is considered ideal for the inverters and that is the C rating with which most inverter batteries are available in market. So if you ask for inverter battery, you will mostly get one with C20 rating.

Types of Inverter and How to Choose One

There are two types of inverters available in Market: Pure Sine Wave Inverter and Modified Sine Wave Inverter (or Square Wave Inverter). The choice will depend on the kind of appliances that you have.

If you want to run electronic appliances (like TVs, Computers, etc) on inverter, then go for Pure Sine wave Inverter, else you can go for Modified Sine Wave Inverter.

Please not Modified Sine Wave Inverter can cause humming noise when used with induction motors like ceiling fans, etc.

Difference between UPS and Inverter:

Although used interchangeably, there is a difference between UPS and Inverter. The basic function and architecture remains the same, but the difference is minor.

The difference between a UPS and Inverter lies in the time in which it can switch to battery power when a power cut happens. A UPS can switch to battery power in 3-5 milli seconds, whereas an inverter does it in 100 milli seconds. The choice between the two will depend on how critical is the switching to backup for the appliances that you want to support. For e.g. a desktop computer would need faster switching as you can loose data if it switches off even for a few milli seconds.

Even in UPS there are Online and Offline UPS. Online UPS are those in which the power is drawn from the battery irrespective of the availability of power from main line. This makes sure that there is no loss of work even for a few milli seconds when there is a power cut. Offline UPS is one where the power is drawn from battery only when there is power cut. All other times it is drawn from mains.

Types of Batteries and how to choose one

There are 3 types of batteries available in market: Flat Plate, Tubular and Maintenance Free. Without getting too much into details, all we can say is that Tubular Batteries are the best choice for inverters. They may cost slightly more than Flat Plate, but they will last longer. Maintenance Free batteries may sound good, but they have lesser life (4-5 years as compared to 7-8 years of a tubular battery). But the most important thing to run batteries for a longer times is to make sure that it is topped (filled) with distilled or RO water frequently and the fluid levels are maintained.

What would be the cost of 500 VA inverter and 100 AH battery?

The cost of an inverter with 500 VA would be around Rs. 3,000 and for 100 AH battery would be approximately Rs. 10,000. Therefore, if you are looking for an inverter with 500 VA and 100 AH battery, it would cost you around Rs. 13,000. Why not go online to search and compare the best deals and save the money that you may have to pay to the middle man, the quality of products and warranty is same and since now some of the e-commerce sites are providing the options of cash on delivery, there is no need to worry more about the delivery.

Other things to consider

Warranties: While purchasing batteries, one must look for maximum warranty. An inverter battery combo of the same brand is useful at times as manufacturers send their engineers for maintenance on a regular basis, which increases the life of the inverter/battery system.

In past Inverters and batteries were manufactured by different manufacturers. Su-kam, Luminous, Microtek were known manufacturers of inverter, whereas Amaron, Exide, etc were known manufacturers of batteries. But now all of them have inveter-battery combos where batteries and inverters are designed to work well with each other. So a combo system works well.

Inverter is a maintenance free product and shall not require any schedule maintenance except failure attention. Maintenance is only needed for batteries.

Efficiency of Inverter/battery system

Inverters are not 100% efficient and thus running the same appliances on inverter would cost you about 25% more. But DG sets will be slightly more expensive (which is about 33% more).

Inverters use some energy to drive its electronics and cooling fan. Battery uses additional energy during the process of charging and discharging. All this energy is wasted as heat energy. It is in the order of 8% during no load and goes up to 20% during full load. This inefficiency is generally taken care by the manufacturer and the rating mentioned is what is at the output terminal. Therefore, energy efficiency is generally not taken into account.

Conclusion

We hope that this information helps you choose the right inverter for your house. We have tried to include answer to every question that we get on this website, but if you still have some doubt, you can leave a note in the comments section below.

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1414 comments

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1

Hi,

Please could you suggest me the Inverter Voltage and the amp batteries for my house.
1. 6 - tube lights
2. 3 - CFL
3. 1 - CRT TV
4. 1- Setop Box
5. 3 - Laptops
6. 1 - Wifi

Thanks a lot for the explanation.

2

i am planning to buy 2.5 kva luminous cruze inverter box with extra ,3 , 165 ah amaron tubular batteries ,wht kind of back up ,hours will it give with 400 w to 600 w load ..i think this is one of the best one time options for my power needs .can 165 ah batteries be increased in future in this case ? i can bargain for best offered prices of all the products ,online/offline ,prepaid or cod mode ,plus i have a dead battery 150 ah ,which will buyback for at least 2000 rs ...

3
Abhishek Jain (Mod)

A 165 Ah battery can at best store 1.65 units of electricity. 3 of them would mean about 5 units or 5000 Wh. A 600 W load would run for 5000/600 = 8 hrs and 20 mins. In future if you want more backup then you can increase it to 200 Ah batteries. However, even with 15 Amp charging current 165 Ah will get charged in 165/15 = 11 hrs.

4

Dear Sir,
Your post is very useful.
please suggest me right capacity inverter for
4 Desktop with LCD 19" screen
2 Celling Fan
2 Lght.
thanks
Rajendra

5
Abhishek Jain (Mod)

How many hours backup do you need?

6
SUMANTA KUMAR PAL

Dear Mr. Abhishek....Regards. Kindly help me to choose the best Home Inverter and battery for my home use with following load (Kindly mention Brand Name+Model No for both Inverter & Battery please):
Fan - 03
CFL (22 Watts) - 04
LCD TV (26 inch) - 01
HD+ AirTel Set Top Box - 01
Personal Computer (Desktop) - 01
WiFi Modem - 01

I want all these for atleast 04 hours

7
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fan39027041080
CFL422884352
TV + STB160604240
Desktop11501504600
Wifi155420
  Total573 2292
  VA819  
    75%1719

I think a 1100VA inverter with 180 or 200 Ah battery would be good enough. You can look at these:

Microtek UPS SEBz 1100 VA (1.1 KVA) Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/JayrVTuuuN )
Su-Kam Falcon + 1100 Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/YTnpQ!NNNN )

This with a 180-200 Ah battery of the same brand or Exide/Amaron.

8

Dear Abhishek,
I have two flat in same building, in First Floor I need 5 Fan & Tubelight,, TV, & in 3rd Floor 3 Fan & Tubelight, TV
So Can I take Single UPS & Battery of higher volt and kept in 3rd floor for both protion. Give your Suggestion and which Brand should i go with.

9
Abhishek Jain (Mod)

You will have to manage the wiring if you want one UPS for both the houses. But wiring will be a bit complicated. Do you really want to do that? Check with an electrician if it is feasible. I can suggest the size once you decide if you want to go for one or two UPS.

10

2000 va inverter can go with 220 ah luminous tall tubular single battery ?or it is a 24 volts inverter it will need 2 batteries of 220 ah each .i want 6 to 7 hrs back with 3 cfl 2 tublights 2 fans 1, 40 inch fhd led or one 275 ltr refrigerator or a aio desktop that already has 1000 vs intex gamma ups with it .tv ,fridge and computer ,all will not work together ,during power cut ,only one of the 3 things will work ..please guide me ,wht is the best solution present at a concessional rate only in the online markets thru out india ,do reply soon ,thanx a lot .

11
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fans29018071260
TL2501007700
CFL323697483
TV+STB180803240
Fridge137537571000
Desktop11501503450
  Total954 4133
  VA1363 

I think you need a two battery system and two batteries of 200 or 220 Ah would be needed. As for inverter you can go for a 2000 VA inverter (or a bit smaller about 1400-1600VA would also do). But you need a 24 V or two battery system. You will not get a 12V 200VA system in the market. Usually 2000 VA inverters are 24V inverters. You can go for a luminous inverter/battery system. It is a good brand.

12

question number 1 , i have a 2011 model sukam 800 va home inverter, can i use two tubular 150 ah batteries with it ?if yes wht will be its back ?in future if i want to increase the back using the same inverter will it be compatible to 3 ,150 ah tubular batteries ?will it support a tubular battery pair of 180 ah or above ? 2 fans 2 tube light or 2 cfl or led tv or computer ..will these things work ,for 3 to 4 hours ob batteries backup ,or i should upgrade the ups with higher volt ampere ?

q2 ,luminous zelio 1700 or any other 2000 va inverter with 2 ,150 ah tubular batteries is a gd combination and a 3 rd one can also be added in it ?for best backup ,or we can increase batteries in the same capacity of 180 ah 200 ah 220 ah respectively ..for increasing the back ,will both these inverters be compatible to 200 ah ,220 ah battery pair ? 2000 va inverter with 2 ,220 or 200 ah tubular batteries is the best combination and 7 to 8 hrs back with medium load ..wht u say ....

13
Abhishek Jain (Mod)

Here is my response:

Q1: You can add more batteries but then the connection will have to be in parallel, but that will double up the charging time. Usually 800 VA inverter will have a charging current of 10 Amp, so a 150 Ah battery will take 150/10 = 15 hrs to charge. If you put two 150 Ah batteries in parallel it will get charged in double the time, so 30 hrs. If you put 3, it will take 3 times the time, so 45 hrs to charge all 3 batteries. This is because 800 VA inverter is a 12V inverter and each battery is 12V. To put two batteries in series so that same amount of current charges both, you need a 12V + 12V = 24V (12V for each battery) inverter. Typically 24V inverters are 1400VA and above. For 3 batteries you need 36V inverter (usually above 2000 VA).

Q2: You cannot add 3rd battery to a 24V inverter. If you want to add batteries in parallel then you will have to add 2 batteries more (so in total 4 batteries). Because each group should have 24V (12V + 12V of each battery).

Also all batteries should be of same Ah value. So you cannot mix a 150 Ah battery with 200 Ah battery, because if you do that, you will get only 150Ah output from 200 Ah battery. Also ideally all batteries should be of the same age.

If you want to increase backup then you will have to replace both 150 Ah batteries with two 200 Ah batteries. Number of batteries should remain the same and the Ah value of both the new batteries should be the same.

14

that means i should upgrade 800 va inverter to a much higher one ,since it will take 30 hrs time to charge with 2 ,150 ah tubular batteries ,and if there is power cut 4 ,to 5 times a day ,it will become useless untill and unless it is fully charged .

for upgrading the system i should go for at least 1700 va inverter with 200 ah 2 tubular batteries or 2000 va inverter with 200 ah or 220 ah tubular batteries ..? to suite my back up needs at this time ,infuture if i need extra back up i can increase a pair of same ampere of battery ,then battery count will be 4 .am i right in my approach ?

can a 1000 va inter gamma computer ups ( with 2 batteries in it ) be attached to a 40 inch led tv with sound bar for taking at least an hour or half back 1.5 hrs backup ?...a different supply line needs to be made ,there is a separate supply for backup to the tv (if needed) from main home ups in discussion earlier ..

15
Abhishek Jain (Mod)

That is right. You need a bigger 24V inverter to handle two batteries. Usually 24V inverters are between 1400 VA and 2000 VA. If you are planning for 200 or 220 Ah batteries then 2000 VA would be better. Bigger inverter is better for bigger batteries. A 2000 VA inverter will have 12-15 Amp charging current. So at 15 Amp a 200 Ah battery will charge in 200/15 = 13 hrs. So both the batteries will get charged in 13 hrs. If you add two more in parallel then again the charging time will double up, so it will become 26 hrs. If you want 4 batteries then you need a 12 V + 12V + 12V + 12 V = 48 V inverter.

1000 VA should be good enough for TV + soundbar, but I am not sure if it can take 1.5 hrs of backup. That will depend on the Ah values of the batteries.

16

Thanks Boss! I found your post really helpful to me. Could you please guide me for the right inverter and battery. Please Mention the Brand and Model No: of the Inverter and Battery if possible
My load is as per
2 fans,
2 tube,
2 led 20 watt bulbs,

For Appox of 8 hr backup

Thanks

17
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fans29018081440
TL2501008800
LED Bulbs220408320
  Total320 2560
  VA457  
    85%2176

I think a 1100 VA inverter with 220 Ah battery would be good. You can look at these:

Microtek UPS SEBz 1100 VA (1.1 KVA) Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/JayrVTuuuN )
Su-Kam Falcon + 1100 Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/YTnpQ!NNNN )

This with a 220 Ah battery of the same brand or Exide/Amaron.

18

Sir my requirement for load as follows
Fan-5 ;6hr
Cfl-6;
Lcd-1; 3hr
Mobilecharging-2
So suggest me a proper functioning inverter and also suggest me which brand of inverter will be best

19
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fan59045062700
CFL6231386828
TV + STB180803240
Mobile2510220
  Total678 3788
  VA969  
    75%2841

I think a 1400 VA inverter with two 150 Ah batteries would be good. You can look at these:

Sukam Falcon (+ or ++ series)
Luminous Zelio 1700 (Zelio is one of their most popular range)
Microtek UPS SEBZ 1500 VA

And two 150 Ah batteries along with this (same as the inverter brand or exide/amaron).

20

Thanks for the wonderful info.
I am looking for power backup options for a 2bhk flat.
Applicances to be connected -
02 fan, 02 tubelight, 02 CFL - for 6 hours everyday
01 Laptop charging for 1 hour,
01 LED 32inch Tv and Setup Box for 3 hrs
02 Android Mobile charging - 3 hrs

Please suggest me the specifications and suggest some brands for Invertor/Battery/UPS

Thanks
Abhinav

21
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fan29018061080
TLs2501006600
CFL223466276
Laptop16060160
TV + STB180803240
Mobile155315
  Total471 2271
  VA673 

I think a 1100 VA inverter with 220 Ah battery would be good. You can look at these:

Microtek UPS SEBz 1100 VA (1.1 KVA) Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/JayrVTuuuN )
Su-Kam Falcon + 1100 Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/YTnpQ!NNNN )

This with a 220 Ah battery of the same brand or Exide/Amaron.

22

Dear Abhisheak , Suggest me which invertor-battery combo to buy based on my appliances requirement.
1. LASER PRINTER HP M 1005 1 hour
2. 3 Fans 5 hours
3. 2 Tubelight 3 hours
4. 5 CFL 3 hours
5. 1 Desktop(CRT Monitor) 2 hours
6. 1 Tv+SB 5 hours
7. COOLER 3 hours
Please Suggest me brand or model of combo.

23
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Printer18080180
Fans39027051350
TLs2501003300
CFLs5231153345
Desktop11501502300
TV + STB180805400
Cooler137537531125
  Total1170 3900
  VA1671  
    75%2925

I think a 1600 VA inverter with two 180 Ah batteries would be good for you. You can look at these models:

Luminous Zelio 1700,
Sukam Faclon+ (or ++) 1600 VA/24V models
Microtek SEBZ 1600 VA.

This along with two 180 Ah batteries (same brand or Exide/Amaron), would be good for you.

24

Hi Abhishek,
Could you suggest me which one would be a better choice of inverter between Amaron 880Va or Microtek 900Va. Also is Amaron 150Ah tall tabular battery good or should I look at Exide.

Thanks

25
Abhishek Jain (Mod)

Amaron is a good brand for battery. If you are looking for a combo then I think Amaron 880VA + Amaron 150 Ah battery should be good.

26

Thanks Abhishek for the revert.
A friend of mine needs to run 3 fans and 4 LED's for about 3 - 4 hours. Could you please help in suggesting what capacity inverter and battery he should buy? Also would you recommend any model.

Thanks

27
Abhishek Jain (Mod)

Hi Rajat,

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fan39027041080
LED418724288
  Total342 1368
  VA489  
    75%1026

I think a 700-750 VA inverter with a 100 or 120 Ah battery would be fine. You can look at these:

Microtek UPS SEBz 700VA Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/k9chxTuuuN )
Su-Kam Shark 700 Va Square Wave Inverter (Flipkart Link: http://fkrt.it/klbvXTuuuN )
Luminous ECO VOLT 700VA Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/xE44z!NNNN )

you can go with any of these with a 100 Ah or 120 Ah (same brand as inverter or exide/amaron tubular battery). As for battery you can go for a tubular (or tall tubular battery) with C20 columb rating.

28

Hi Abhishek,

I purchased Exide Xtatic 850 Va inverter recently , it's fuse was blown twice in a day,
Can it might be some problem in inverter as there as 2 other inverters in my building they didn't experienced any fault.

And can i add MCB of same rating as of fuse in Inverter Output Line.

Thanks.

29
Abhishek Jain (Mod)

If the input fuse is blowing, it may be due to internal fault. Since it is under warranty, it will be better to call Exide when the fuse blows. The manufacturer can better tell you if you can add MCB in place of glass fuse.

30

I have to buy new inverter our requirementis 4 cfl 2 led 3 fan 1 tv please give good combination of inverter and battery with less than rs14000

31
Abhishek Jain (Mod)

How many hours backup do you need?

32

Hi Abhishek, First and foremost, thank you for Such an informative and helpful blog. My requirement is 4 fans, 10 LEDs (9watts each), 5 (5amp) sockets for charging mobiles and laptops & 1 wifi, 1 calling bell. I will need 6 hrs of backup. Which inverter and battery of what capacity should I buy?

33
Abhishek Jain (Mod)

Sizing of inverter depends on the power of appliances that you connect and because there is a huge difference in power consumption of a mobile phone charger and laptop charger that I will have to assume 5 laptops to be charged at 5 points to be safe in calculation. Ideally you should provide the count and type of actual appliances to be run rather than 5 plug points. Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fans49036062160
LEDs109906540
Laptops56030061800
Wifi155630
  Total755 4530
  VA1079  
    75%3397.5

As per the calculation a 1400 VA with two 150 Ah batteries would be required. But because the assumption is on a higher side I think a 1100 VA with one 180 or 200 Ah battery should be good enough. But then it will depend on the actual number and type of appliances (mobiles, laptops) that will be used at any given time.

34

Hi,

Thank you for the informative write-up. I need your help to buy the right inverter model for AMARON battery of 12V 42AH. I already have the battery with me. My requirement is to run 2 fans & 2 tube lights at a time for about 2 hours.

35
Abhishek Jain (Mod)

2 fans = 180 watts and 2 Tube lights would be 100 Watts. Total would be 280 watts. For 2 hours you need 280 x 2 = 560 Wh .... 42 ah battery may not give you full 2 hours. It will be between 1 and 2 hours. VA value needed is about 400-450 VA. So you can go for any 450 VA inverter with this battery.

36

Holla Abhishek, pls help me calculate d requirement for 60 Desktop (flat screen). am budget to get inverter for my school Computer Laboratory. Thank u sir

37
Abhishek Jain (Mod)

A desktop is about 150 watts. So 60 desktops would be 9000 Watts or about 10 kVA. So you would need 10 kVA inverter. 9000 Watts in 1 hour would consume 9 units of electricity. So you need batteries to store 9 units of electricity (about 900 Ah in total ... it can be 6 numbers of 150 Ah or 9 numbers of 100 Ah).

38

Dear Abhisek,

Please suggest me which inverter -battery combo to buy based on the below appliances I have for electricity consumption:
a)5 LED bulbs
b)3 fans
c)1 TV & set top box
d)1 Laptop,WIfi & Modem
I am looking for a power backup for 5-6 hours
Also,Please suggest me which brand should i go for,out of so many options we have for these.

Regards,
Suren

39
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
LED518906540
Fans39027061620
TV190906540
Laptop160606360
Wifi155630
  Total515 3090
  VA736  
    75%2317.5

It will be better if you go for a two battery system or a 24V system. You can look at these:

Sukam Falcon (+ or ++ series)
Luminous Zelio 1700 (Zelio is one of their most popular range)
Microtek UPS SEBZ 1500 VA

And two 120 Ah batteries along with this (same as the inverter brand or exide/amaron).

40

Hi Abhishek, I would like to know Watt value of CCTV camera system. regards

41
Abhishek Jain (Mod)

I am not aware of power consumption of CCTV cameras. You will have to look at the user manual or contact the manufacturer for the same.

42

Thanks for your quick response. I'm little bit choosy so confused of variety of power inverter brand in market. My budget is under 25K. So if any valuable advice would be my pleasure.

43
Abhishek Jain (Mod)

In my previous message I had give this:

"I think 1100 VA inverter with 220 Ah battery would be good for you. You can look at these:

Microtek UPS SEBz 1100 VA (1.1 KVA) Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/JayrVTuuuN )
Su-Kam Falcon + 1100 Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/YTnpQ!NNNN )

This with a 220 Ah battery of the same brand or Exide/Amaron."

This combo should come in your budget of 25K. You can go with Exide Invatubular battery.

44

You guys are awesome!!! Thanks a ton!!

45

Hi! there I found your post really helpful to me. i need your help for the right inverter and battery. My load is as per
3 fans, 1 tube, 5 led 18 watt bulbs, 1 led Tv & setup box. For avrg of six hr backup

46
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fan39027061620
TL150506300
LED518906540
TV180806480
  Total490 2940
  VA700  
    75%2205

I think 1100 VA inverter with 220 Ah battery would be good for you. You can look at these:

Microtek UPS SEBz 1100 VA (1.1 KVA) Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/JayrVTuuuN )
Su-Kam Falcon + 1100 Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/YTnpQ!NNNN )

This with a 220 Ah battery of the same brand or Exide/Amaron. Usually you get a better warranty and maintenance with same brand. But if you go for different brand then you can get the best inverter + best battery.

47

Hi Abhishek,

Brilliantly quoted and well written, thank you for this knowledge.
I have couple of questions, if you may help,
1. What should I get for 3 fans, 4 tubelights, wifi router, phone chargers? Need back up for 2 hours max within the span of 24 hours.

2. I know Exide is best to buy, yet please guide me the best one to buy, I am lost in this sea of products!

Thanks a lot!
Zan

48
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fans3902702540
TLs4502002400
Wifi155210
Phone Charger155210
  Total480 960
  VA686 

A 700-750 VA inverter with a 100 Ah battery should be good enough. You can check these:

Microtek UPS SEBz 700VA Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/k9chxTuuuN )
Su-Kam Shark 700 Va Square Wave Inverter (Flipkart Link: http://fkrt.it/klbvXTuuuN )
Luminous ECO VOLT 700VA Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/xE44z!NNNN )

you can go with any of these with a 100 Ah (same brand as inverter or exide/amaron tubular battery). As for battery you can go for a tubular (or tall tubular battery) with C20 columb rating. Exide Invatubular 115Ah battery should be good.

49

Hello admin,
Nice article for presenting useful information on inverters n batteries.
I have to buy an inverter-battery system for home with requirements as below:
1. Fans- 3 (running at most 2, for 4-5hr.)
2. LED bulb- 2 (20w each)
3. CFL- 4 (18w each)
4. CRT TV- 1 (maybe only 1hr usage)
5. Set-top box- 1(1hr. Max)
6. Exhaust fan- 1(2hr. Max)
7. Air-cooler with inv. Tech- 1(1hr. Max)
8. One (1) plug for charging laptop n smartphone

So for above i have been thinking of buying either
1. Amaron 880VA sinewave inv. With 150Ah amaron tubular battery (Appx.@ 16,000rs.)
2. Luminous Ecowatt 850VA inv. With 150Ah Redcharge luminous battery (Appx. @ 13,500rs.) & With 200Ah (Appx. @ 15,500rs.)
3. V-Guard 750VA (copper) inv. With crompton 150Ah tubular battery (appx. @ 14,000rs.)
4. Microtek 950VA inv. With 250Ah Amritsar localmade INDIA Tubular battery (appx. @13,200 rs.)

Kindly help me with ur valuable answer suggesting the right wattage load inv. For above mentioned appliances And also the best suited battery capacity for around 6-8hrs. Backup time.
Also clarify if keeping a charging socket active attracts any losses from battery and if the wire used for supply current through inv. is 1mm than 0.75mm will result in more wastage of charge if any carried over the circuit.
Finally, coming to the price i expect to spend 16,000/- for a branded combo meeting my needs.
Thanks in Advance. Hoping for a quick response from you

50

Hello Gagan,
Could you please tell from where you are getting Amaron Combo at 16K, I need to purchase this configuration(I am Based in Gurgaon).
1. Amaron 880VA sinewave inv. With 150Ah amaron tubular battery (Appx.@ 16,000rs.)

51
Abhishek Jain (Mod)

Hi Gagan,

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fans39027041080
LED220405200
CFL418725360
TV11201201120
STB12525125
Exhaust175752150
Air Cooler13503501350
Plug160605300
  Total1012 2585
  VA1446 

Firstly you need a 1400 to 1600 VA inverter. 850 or 950 VA will not be sufficient. Secondly I have assumed lesser backup time as you had mentioned 4-5 hrs for fan. And with that also you need two batteries of 150 Ah each. For 8 hours backup you will need bigger batteries or more batteries.

Charging socket will not waste electricity unless the circuit is complete. And this happens only when you connect any appliance (or if there is any fault in the socket). Otherwise there should be no current in the socket.

I doubt you will get something in Rs 16000 for 8 hours backup.

52
Mahasen Bhagvath

Hello Abhishek,
Your post was very helpful. Following is my requirement. Please let me know what would be the best combination of Inverter plus battery. I did try your calculations but not fully clear whether my calculations are right or not. My requirements are as below:
Fans: 3
Tubelights: 4
CFL: 3
LED TV + Set Top Box: 1
Laptop: 1
Wifi Router: 1
Mixer Grinder: 1
Total hours of backup required: 6 hours.
Since Mixer and TV will not be used continuously during Power failure, please do not consider 6 hours backup for them.
As per my calculations, 1400VA Inverter and 2 150Ah batteries are required. Please provide your calculations and suggestions. Thanks a lot in advance.

53
Abhishek Jain (Mod)

Here is you calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fans39027061620
TLs45020061200
CFL323696414
TV180804320
Laptop160606360
Wifi155630
Mixer Grinder17507500.5375
  Total1434 4319
  VA2049  
    75%3239.25

I think a 2 kVA would be better. With two 180 Ah batteries.

54

Hello Sir,

Thank you so much for the information. It is really helpful.
I want to purchase an inverter for below load, please suggest the VA and Battery for 2-3 hours backup.

6 Fans (All 6 are connected to inverter but will try to use only 4 during power cut)
12 LED Lights of around 10 watts
1 LED TV 42 (May not be used during power cut)
1 LED TV 50
1 Hathway Settop Box
2 Laptops
1 wifi router
1 PS4 (May not be used during power cut)
2 mobile chargers

Regards,
Sai

55
Abhishek Jain (Mod)

Hi Sai,

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fans69054031620
LED12101203360
TV+STB2801603480
Laptop2601203360
Wifi155315
PS411401403420
Mobile2510330
  Total1095 3285
  VA1564  
    70%2299.5

You need a 1600 VA system which would be a 24V or two battery system. You can go for two 120 Ah batteries to get 3 hrs backup. You can look at these:

Some good models: Luminous Zelio 1700, Sukam Faclon+ (or ++) 1400 VA/24V models (in general Sukam has better efficiency models giving longer backups), Microtek SEBZ 1600 VA.

You can go for exide/amaron batteries of 120 Ah or same brand as the inverter.

56

Thank you

57

Dear sir,
I find this article very helpful!.Thank you so much.please if you can help me in suggesting which inverter and battery I should choose for my home.
here is my list of consumption :
6Led bulbs
2fans (small ceiling fans)
I Tv
WiFi router
3laptops
3Mobiles.
please help me out in selecting a combo of battery and inverter.
should i buy a same brand or different.
Thanks
Regards!

58
Abhishek Jain (Mod)

Here is your calculation (I have assumed 3 hrs backup):

ApplianceCountWattageTotal WattageHoursTotal Wh
Fans29018031800
LED Bulbs615903270
TV180803240
WiFi155315
Laptop3601803540
Mobiles3515345
  Total550 2910
  VA786  
    75%2182.5

You can go for a 1100 VA inverter with 200 or 220 Ah battery. You can look at these:

Microtek UPS SEBz 1100 VA (1.1 KVA) Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/JayrVTuuuN )
Su-Kam Falcon + 1100 Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/YTnpQ!NNNN )

This will a 200 Ah or 220 Ah battery of the same brand or Exide/Amaron. Usually you get a better warranty and maintenance with same brand. But if you go for different brand then you can get the best inverter + best battery.

59

Dear Mr Amit
Ref my query dt 29 Jun and your mail thereto. What is the broad range of startup power requirement for a 1 ton invertor ac(daikin)? What is the min capacity sinewave invertor and battey setup required to run 1 ton invertor ac alongwith fwg load for 2.5 hrs: -
1*fan
2 * cfl
Is it advisable to go in for a solar invertor or a solar convertor with this setup to increase the backup in case of a longer power cut, if any?

looking forward to an early reply.

60
Abhishek Jain (Mod)

Hi Akshay,

Firstly, my name is Abhishek and not Amit. Secondly, I did reply to your question in the morning. Copying again:

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
AC11200120031800
Fan190903270
CFL223463138
  Total1336 2208
  VA1909 

I think a 2 kVA/24V inverter with two numbers of 120 Ah batteries should be good for you. You can go for Luminous Cruze 2 kVA/24V inverter with two 120 Ah batteries.

61

Dear Abhishek, Very nice of you to help out everyone. Could you help me as well on the inverter/battery selection.
I am looking for 2 fans, 3 tubelights, 1 laptop for 5 hours. all this for 4-5 hours.
Also, which ones are better? Thanks.

62
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fans29018051800
TLs3501505750
Laptop160605300
  Total390 2850
  VA557  
    75%2137.5

I think 1100 VA inverter with 200 Ah battery should be able to give you 4 hour+ backup. You can look at these:

Microtek UPS SEBz 1100 VA (1.1 KVA) Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/JayrVTuuuN )
Su-Kam Falcon + 1100 Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/YTnpQ!NNNN )

This will a 200 Ah battery of the same brand or Exide/Amaron.

63

Dear Mr Amit,
Ref my query dated 29 Jun and your mail thereto. Request broad guidelines on the start up voltage of a 1 ton invertor AC. Is it possible to run the same on an invertor as suggested in one of your articles.....if yes what capacity invertor. Also, what kind and nos of bty will be reqd to run the following load for 2-3 hrs:-
2 LED / CFL bulbs,
1* Fan
1* 1 ton invertor AC

thanks

64
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
AC11200120031800
Fan190903270
CFL223463138
  Total1336 2208
  VA1909 

I think a 2 kVA/24V inverter with two numbers of 120 Ah batteries should be good for you. You can go for Luminous Cruze 2 kVA/24V inverter with two 120 Ah batteries.

65

Dear Amit,
Request you to pls guide me on two aspects.
Firstly, a suitable invertor for a 2 BHK house with the prime requirement of running an ac(1 or 1.5 ton as advised by you) for a routine power cut of 2 to 2.5 hrs. Pls suggest the suitable model of an invertor along with recommended battery type, and nos.
Secondly, pls suggest a minimum capacity suitable ac model (preferably invertor ac for a room size of 10 * 12 ft) that may run on the invertor setup recommended by you. Daily running of the ac is about 8 - 10 hours.
Looking forward to your valuable guidance at the earliest.

66
Abhishek Jain (Mod)

Capacity of the AC depends on the city and various other parameters. I would suggest that you use the calculator on this page to get the right tonnage: https://www.bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html

Also sizing of inverter depends on list of appliances to be run on inverter. No one can give you the right size just based on "suitable inverter for 2 BHK". You will have to list out the appliances you will run on inverter and the backup hours required. Also for running AC, it is advisable to go for DG sets as the power requirement is high for ACs.

67

Hello Sir,

I want to purchase an inverter for below load, please suggest the VA and Battery for 2-3 hours backup.

4 Fan,
7 CFL of around 15 watt
1 LED TV 40'
1 - HD Settop Box (Tata Sky)
2 - Laptops
1 - wifi router
4 - 5amp socket points

Regards,
Deepesh

68
Abhishek Jain (Mod)

What will you put on 4 socket points? To calculate VA required you need to know the wattage of appliances that will be put on socket points.

69

It might be used for mobile/laptop charging.

70
Abhishek Jain (Mod)

You had already included 2 laptops. Also to be safe I have included 4 laptops in calculation (because one has to size for the worst case). So here is the calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fans49036031080
CFLs7151053315
TV+STB180803240
Laptops4602403720
WiFi155315
  Total790 2370
  VA1129  
    75%1777.5

A 1100 VA inverter with 180 Ah battery should be good enough. You can look at these:

Microtek UPS SEBz 1100 VA (1.1 KVA) Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/JayrVTuuuN )
Su-Kam Falcon + 1100 Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/YTnpQ!NNNN )

with a 180 Ah battery (same brand as inverter or Exide/Amaron).

71

Dear Sir,

Thank you so much for the information you are giving really helpful.
Please suggest a inverter and battery for my requirement

2 Tube lights 3 Hours
3 Fans 6 Hours
1 Lcd + Standard set top boxes 2 Hours
1 Wi -Fi Router 6 Hours
2 Cfl 15watts 6 Hours

-which company is good Sukam or Luminous or Microtek in inverter and battery & in aftersale service and warranty.

-luminous and su-kam has 3 types of tubular batteries please explain the
difference and suggest the best one with c20 rating.

luminous
1. Inverlast tall tubular battery
2. Extra charge
3. Electra tall tubular battery
su-kam
1. Big Warrier Series
2. Big Conquerior Series
3. Bazooka Series

Thank you

72
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fans39027061620
TLs2501003300
TV180802160
Wifi155630
CFLs215306180
  Total485 2290
  VA693 

I think a 1100 VA inverter with 200 Ah battery would be good as 1100 VA inverter will charge a 200 Ah battery faster. You can look at these:

Microtek UPS SEBz 1100 VA (1.1 KVA) Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/JayrVTuuuN )
Su-Kam Falcon + 1100 Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/YTnpQ!NNNN" rel="nofollow" target="_blank">http://fkrt.it/YTnpQ!NNNN )

I think Su-Kam Falcon + 1100 Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/YTnpQ!NNNN" rel="nofollow" target="_blank">http://fkrt.it/YTnpQ!NNNN ) + Su-kam Big Warrior series 200 Ah battery would be good. Big Warrior is the only series from Sukam that has 200 Ah battery.

73

Hello Sir,

First of all I would like to thank you for proving such an important information. Hats of to you.
Please help me to find out suitable inverter/ups/battery for my home. My requirement is
4 ceiling fans (only 2 during power cut)
4 Tube light (2 during power cut)
4 Led bulbs (9 & 15 watt)
1 socket for mobile or laptop charging.

Kindly suggest me with full details like VA, Model no. of inverter/ups and Battery capacity in AH with model no.

Hoping for a favourable response.
Thanking you

74
Abhishek Jain (Mod)

What is the backup hours that you are looking at? Also when you say you will use only 2 during power cuts, do you know of which 2 fans will be used. I am trying to understand, is there a possibility that all 4 fans will be used at any point or will you connect only 2 fans and the rest 2 will not be connected to inverter.

75

Dear sir thank you for you reply

Backup time : 4-5 hours
Connection required in all 4 ceiling fan but any 2 will be used during power cut.

76
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fan49036051800
TLs45020051000
LED2918590
LED215305150
Socket160605300
  Total668 3340
  VA954  
    50%1670

I think a 900-950 VA inverter with 180 Ah battery should be good enough. You can look at any of these:

Luminous Zelio 1100 VA Sine Wave Home UPS Inverter Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/J!AxMTuuuN )
Microtek UPS SEBz 900 VA Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/zka5pTuuuN )
Su-Kam SHINY 900VA/12V Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/7cukn!NNNN )
EXIDE XTATIC850VA UPS Pure Sine Wave Inverter (Flipkar Link: http://fkrt.it/EroiJ!NNNN )

This along with a 180 Ah battery.

77

Hi Abhishek Jain,

Thanks for the information , your doing a great Job.

Please suggest a inverter for the below requirement

4 LED Tube lights- 18 watt
5 Fans
1 Laptop
1 Wi -Fi Router
1. geyser
1. refrigerator ( Optional)
1. TV - 40'' LED

Thanks in Advance .

78
Abhishek Jain (Mod)

Hi Prashanth,

Do you really want to run a geyser on inverter? Because that is a very heavy appliance to run on inverter. Also what is the backup hours that you are looking at?

79

Hi Abhishek ,

I included geyser option for Just in case , please suggest without considering geyser then .

Backup hours : 5-6

80
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
LED TL418726432
Fans59045062700
Laptop160606360
Wifi155630
Fridge13753756800
TV180806480
  Total1042 4802
  VA1489  
    75%3601.5

You need a 1400 VA inverter with two 180 Ah batteries. You can look at these:

Sukam Falcon (+ or ++ series)
Luminous Zelio 1700 (Zelio is one of their most popular range)
Microtek UPS SEBZ 1500 VA

And two 180 Ah batteries along with this (same as the inverter brand or exide/amaron).

81

Hi Sir,

I have below requirement with Back-Up Time around 5 hours

3 fans , 3 led bulb(max 15 Watt) and tv with stb and wifi router

Please suggest Inverter and Battery Capacity needed,
Also kindly tell ,
1\Will 650 VA suffice?
2\I want to go with Amron/Exide battery + inverted, is brand good?
3\I am tight with budget , So battery Back-Up Time can be traded-off and Can I add additional Battery Later , will it work?

82
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fans3902701270
LEDs31545145
TV+STB18080180
Wifi15515
  Total400 400
  VA571  
    75%300

So 650 VA would suffice. Also a 100 Ah battery can give you 3 hrs backup. Amaron and Exide are best battery brands. Their inverters are also good. Adding additional battery on this inverter will be a bit difficult as it will increase charging time.

83

Hi Abhishek,
Thanks for replying ,
If charging time will increase, does this will have negative impact on Inverter/Batteries.

84
Abhishek Jain (Mod)

Not really. But then charging time will double up.

85

One More naive question , will moving to higher 850 VA inverter and 150 Ah battery will be good idea
and also , if i run less load then defined above will it proportionally increase the Back-up Time and will be there be some standard loss , running the inverter in lower Capacity then defined.

86
Abhishek Jain (Mod)

Moving to a bigger system would be a good idea only if you plan to add more appliances or plan to get a longer backup. 150 Ah can give you 5 hrs backup. And you would need a 850 VA inverter to charge 150 Ah battery on time.

And yes if you run less load, you will proportionally get longer backup time.

Any big system has more electricity consumption. So be aware of impacts on electricity bills as well. So try to keep it right sized as per your needs.

87

Sir do we want to use same company of inverter with battery or can I use another company?

88
Abhishek Jain (Mod)

You can use any combination depending on your preference. You can get best inverter + best battery if you use different company. You get better warranty is you use same inverter and battery combination.

89

Dear Sir,
Can you help me please.
I have a desktop PC with Corsair CX850m PSU, my total usage of power is about 500-540watt. What i'm really confuse is that :
1. Do i exactly need a UPS to run the 850watt PSU or my consumption of power 500watt ?
2. Will it be okay to use a UPS that can give 600 watt, will their be effect on my PSU ?
3, What will be the most compatible UPS or Inverter ?

90
Abhishek Jain (Mod)

The ratings of UPS is usually in VA and not in Watts. And there is a difference between VA and Watts ( and you can read more about it on this link: https://www.bijlibachao.com/general-tips/what-is-power-factor-correction-and-how-mdi-maximum-demand-indicator-penalty-can-be-avoided.html )

Watts = Power Factor x V (volt) x A (Amp)

Usually power factor is low for appliances with motors and electronics should typically have power factor of close to "1". Which means for electronic watts and VA should almost be same. But still for safety of calculation we assume power factor to be as bad as 0.7. But usually it is about 0.9.

Now having said that, to answer your questions:

1) 850 VA is safe for power consumption of 500 Watts.

2) You PSU may or may not work at 600 VA UPS .... if it gives 600 watts output then it should work 100% but if it gives 600 VA output, then it may or may not work.

3) UPS and Inverters are terms used interchangeably these days. There are online UPS and offline UPS. In Online UPS the appliance always runs on battery and the power from mains keeps charging the battery. In Offline UPS, the appliance comes on battery only when the power goes, and the switching takes place in milli seconds. In Inverter the switching time is a bit more (or it can be manual switching as well). All depends on how critical is the need for the appliance. For a desktop computer, Online UPS is the best.

91

Sir, as mention above can you kindly please suggest me the online ups which will be compatible for my desktop PC.

92
Abhishek Jain (Mod)

You can check the Online UPS ranges from Microtek or Sukam (the 1 kVA ones):

http://www.su-kam.com/power-solution/inverter-ups/intelliq-series-online-ups

https://www.microtekdirect.com/online-ups/

or APC ... if you want Online UPS. However, Sukam Falcon + will also work as it has really fast switching time.

93

Sir, the information furnished in the website is very useful. Thank you for that.
When I went to market to purchase inverter, the shop keeper suggested to go for Luminous battery and Luminous inverter.
But, in your website since it is given that Exide and Amaron are good in batteries.. which one will you suggest?
Is it better to go with Exide battery and some other inverter brand?? or Is it ok to go with both Lumionus battery and inverter?
Please suggest.
Thank you

94
Abhishek Jain (Mod)

Hi Vamshi,

Sukam, Luminous and Microtek are leading brands in inverter and Exide & Amaron are leading brand in batteries. If you want the best of both then you can choose a mix of leading inverter and leading battery. But then these days warranty and maintenance is better with single brand battery+inverter. So in that sense Luminous Battery + Luminous inverter can get you better warranty and maintenance. But if you want a better battery then you can go for Exide Battery + Luminous Inverter.

95

Dear Sir,
Have a positive feeling , after reading your blog . Sir, My requirements is listed below, Would be highly thankful for your answer .
Please suggest me size for invertor and battery for below my requirement
2 ceiling fan
3 LED BULB
1 Panasonic Tv 32 inches. wall hanging.
1 Set top box.
Approx time is 5-6 hrs
Please suggest which brand for both.
Reply

96
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fan29018061080
LED315456270
TV+STB180806480
  Total305 1830
  VA436 

I think a 180 Ah battery with 1100 VA inverter would be good. You can look at these:

Microtek UPS SEBz 1100 VA (1.1 KVA) Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/JayrVTuuuN )
Su-Kam Falcon + 1100 Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/YTnpQ!NNNN )

with a 180 Ah battery (same brand as inverter or Exide/Amaron).

97

Dear Sir,

We have a requirement of UPS in our Apartment complex common area.

We need to run 50 LEDs of 9 Watt each + 7 LEDs with 20Watt each for minimum 6 hours. I tried to calculate as per the instruction given above but somewhere I am going wrong and not able to get which Inverter and how many battery we should use.

Please guide.

Kind regards,
Samrat...

98
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
LED50945062700
LED7201406840
  Total590 3540
  VA843 

You need two batteries of 180 Ah to support the lights and for that you need a 24V inverter. The smallest 24V inverter would be a 1400VA inverter. You can look at these:

Sukam Falcon (+ or ++ series)
Luminous Zelio 1700 (Zelio is one of their most popular range)
Microtek UPS SEBZ 1500 VA

And two 180 Ah batteries along with this (same as the inverter brand or exide/amaron).

99

Sir which better choice for 150ah exide gel magic battery 1100 or 850 VA

100
Abhishek Jain (Mod)

1100 VA will charge the battery faster. But 850 VA should also work.

101

Sir
My requirement is 9 fans 20 cfl bulbs are need to be operated . Back up should be for 5 hours. What configuration of inverter n battery i should use and which brand . Plz guide

102
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fans99081054050
CFL202346052300
  Total1270 6350
  VA1814  
    75%4762.5

Assuming you use only 75% of the things at any given time, you need about 4.5 unit of electricity to be stored. Which means you need three batteries of 150 Ah. So you need a 3 battery system or a 36V system. So a 2.5 kVA/36V system with 3 numbers of 150 Ah batteries would be required. You can look at these:

Sukam Fusion Pure Sine Wave Commercial UPS 2.5kVA/36 V
Luminous Cruze 2.5 KVA Sine Wave home UPS
Microtek Digital SOHO inverter 2.5kVA/36V

You will have to go for 3 numbers of 150 Ah tubular batteries with these (same brand as inverter or Exide/Amaron batteries).

103

Hi,

I need to use,

2 fans
2 TL
1 CFL
Wifi router
Lap top -1

Minimum of 5 hours.

i have read this article, just suggest me one among (Su Kam Falcon "+" 1100VA+ Exide 150AH) or (Exide 1050VA + Battery 150ah AH) or some better suggestion if you have any.

104
Abhishek Jain (Mod)

Your calculations are right. I think Exide 1050VA + Battery 150ah AH should get you a better warranty and maintenance.

105

Hello, Could you please tell me which combo is the best..? Microtek+ Exide, Vguard+ Exide , Or Vguard inverter+ Vguard battery?

106
Abhishek Jain (Mod)

Microtek + Exide would be combo of good inverter and battery. But from a warranty and maintenance perspective VGuard + VGuard would be better.

107

Hey Abhishek
Plz tell me if u have to choose between these.....what would be ur selection

Sukam Falcon+ 900va
Luminous Zelio 1100va(900 is rated)
Or any other model in 900 Va

Also tell me if i go for Luminous ILTT 18047N battery then what would be your choice???
Thanks

108
Abhishek Jain (Mod)

Based on technology and my own understanding, I would go for Sukam Falcon+ (as it has really good and useful features). Based on user feedback and popularity, Luminous Zelio is better. Same brand battery and inverter gets you better maintenance and warranty. So if you go for luminous battery then luminous zelio would be a better choice.

109

Can i use a Sukam Falcon+ as a computer UPS. Will it be stable, continuously run my PC during a power cut or fluctuate

110
Abhishek Jain (Mod)

Faclon+ has 8 MSec switchover which is quite fast. Desktop computers usually have a hold up time of 20 MSec, so I think Falcon+ should be fine for the PC.

111

Sorry its luminous ILTT 18048N battery... 150ah

112

Dear sir
Please suggest me size for invertor and battery for below my requirement
1 ceiling fan
1 table fan
2 tube light
2 LED BULG

Approx time is 7-8 hrs
Please suggest which brand for both.

113
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fan190908720
TLs2501008800
Table Fan155558440
LED Bulb2183681000
  Total281 2960
  VA401  
    75%2220

You need at least 200 Ah battery (or more) to run this for 7 hours. And to charge that you need a 1100 VA inverter. You can look at:

Microtek UPS SEBz 1100 VA (1.1 KVA) Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/JayrVTuuuN )
Su-Kam Falcon + 1100 Pure Sine Wave Inverter (Flipkart Link: http://fkrt.it/YTnpQ!NNNN )

with a 200 Ah battery (same brand as inverter or Exide/Amaron).

114

Which inverter (VA ?) will be best for charging 200Ah battery ? Please suggest brand.

115
Abhishek Jain (Mod)

1100 VA should be good. Sukam and Microtek have good 1100 VA inverters.

116

Hi
What Inverter do I need if I want to run the following appliances for periods of 6 hours and how many batteries would be needed to run the following:
1 x fridge/freezer combination
1 x LCD 55" TV
3 x mobile phone chargers
2 x tube lights
1 x Wif-Fi Router

117
Abhishek Jain (Mod)

Hi Ina,

What is a Fridge/Freezer combination? Do you have a different firdge and a freezer? Also no fans included in this?

118

Could you please help me out with theu/m requirements.
1. Load 5 x fans, 4 x TLs, 1 x 40 inch UK HD Led, 1x stb, 1x 360ltr Samsung Refrigerator, 6 x CFLs and 2 x Laptop Pts.
2. Back up required 10 hrs with at least 75% load.
3. Frequent thundering occurs at my place of residence. Does that have any consequence or any precautionary measures to be taken.
4. In addition to what you recommend is V Guard inverter an equally good option. I believe they give 3 yrs replacement warranty(thundering issue).
5. Please recommend me the best option available.

119
Abhishek Jain (Mod)

Here is your calculation:

ApplianceCountWattageTotal WattageHoursTotal Wh
Fans590450104500
TLs450200102000
TV+STB1808010800
Fridge1375375101000
CFLs1569010900
Laptop260120101200
  Total1315 10400
  VA1879  
    75%7800

You will need a 4 battery system for 75% load. I think it will be better if you go for a DG set. Inverter/Battery system will be really expensive.

120

Hi,

I need batteries for common building backup. Means the load is
1. Lift
2. other lights 150watt

require 2-3 hrs backup

Please suggest which types of battery, ah, company & quantity will fulfill this requirement.

121
Abhishek Jain (Mod)

For a building I think using a DG set would be better.

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