How to choose the right inverter & battery for your home?

Guidelines to choose right inverter

Are you planning to buy a new inverter or upgrade your old one? Whatever maybe the reason, it is very important to understand what is the right inverter for your home. The power requirement at your home can be different from you neighbor’s home. So do not just blindly install the same inverter (in terms of power) in your home. Before buying an inverter for your home do a little homework and understand the basics.

At the end, we’ll also recommend some reliable and secure batteries from sellers that you can trust on Amazon.

First understand your Power Requirement

One of the most important factor that you must know before buying an inverter is your “Power requirement”. In simple words- what all electrical appliances (like fan, tube lights, television, CFL etc.) you want to run at the time of power failure. The power requirement is addition of the power consumed by various electrical equipments.

Suppose you want 3 Fans, 3 Tube lights, 1 CFL & 1 television to operate at the time of power failure. Below is the power consumed by these items:

1 Fan – 70 Watts

1 tube light – 60 watts

1 CFL – 25 watts

1 Television – 120 watts

Therefore your total power requirement is ( 3*70 +3*60 + 25 + 120) = 535 watts

Find the VA rating of the inverter you need

It stands for the Volt ampere rating. It is the voltage and current supplied by the inverter to the equipments. If an inverter operates with 100% efficiency, then the power requirement of the electrical items and power supplied by inverter is same. But we all know that 100% or ideal conditions don’t exist in real.  Most  inverters have the efficiency range from 60 % to 80%. This efficiency is also called power factor of an inverter and is simply  the ratio of power required by the appliances to power supplied by an inverter. Power factor of most inverters ranges from 0.6 to 0.8.

READ ALSO:  Can an air conditioner run on an inverter? Find out

Hence Power supplied (or VA rating of inverter) = Power requirement ( power consumed by equipments in watts) / Power factor( efficiency).

Here average value of power factor or efficiency  is considered i.e. 0.7

Power of inverter (VA) = 535/0.7 = 765 VA

In the market 800 VA inverters are available. So an inverter with 800 VA will be the right choice for your home.

Know the battery your inverter needs

 Battery is the backbone of an inverter system. The performance and life of an inverter largely depend upon the battery quality. The next big question is “how much back up will an inverter provide?” or for “how many hours it can run all of your equipments?”. This is what is called the battery capacity. It is the battery capacity that decides the back up hours. It is expressed in Ah (Ampere Hours).

In the market batteries with capacity of 100 Ah,150 Ah, 180 Ah etc.  are readily available. So how to decide which one do you need? To find this out lets do a reverse calculation. Consider that you need a battery that provides back up for 3 hours.

Battery capacity = Power requirement  (in watts) * Back up hours ( in hrs) / Battery Voltage (in volts)

Battery Capacity = (535 * 3) / 12 = 133 Ah

** Value of Battery voltage is taken 12V

Therefore a battery with a capacity of 130 Ah will work for you.

So if you want to run 3 fans, 3 tube lights , 1 CFL and 1 TV for 3 hours during power failure you would need 800VA inverter and 130 Ah battery.

By understanding this simple calculation you not only save yourself from the misleading information shared by inverter dealers but also  help yourself in taking correct decision.

READ ALSO:  3 types of inverter battery! Which one is installed in your home?

Here, are some batteries on Amazon that we highly recommend.


Mr. Right believes in making its customers smart and aware of the home repair and improvement.

For  inverter repair in Delhi, Noida, Gurgaon, NCR, Mumbai, Bengaluru, Hyderabad, and Pune contact Mr.Right.


These days, everybody is looking for and pushing towards more sustainable resources of energy and solar energy is the frontrunner in these areas. So if you are also considering going for solar energy, here are top reason why you may want to consider solas inverter battery instead of normal inverter.

benefits of solar-inverter battery

Loom Solar has analysed inverter battery market in India, 2018. As per their observation, Normal Inverter Battery has some limitation, whereas Solar Inverter Battery removes their limitation. Loom Solar has design a new inverter battery with solar, called Solar Ready.

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    Thank you very much for your article. i was looking for the battery to buy and found this article. I think we need to see the characteristics like warranty and price for the first time!

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    A ceiling fan is just one of the absolute most important appliances at a household. It’s also usually also among the most neglected appliances. The ideal fans in India ought to consist of features like saving electricity, sweeping a bigger surface area and also a lot more than only the simple function of moving air.

    Fans are being used since a long time for you to circulate air while in the surrounding. It is the cheapest, most ordinary method to increase air flow within an room plus is effective for hot and cold weather. It brings the temperature down of its environment by 7 degrees, making the place warmer.

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    Thanks for the article
    Please, what will happen to the inverter and the battery when the load you are using is too lesser to inverter capacity…..
    Assuming you have 2kva inverter and you are using load like 550wattages on it?

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    this content is just copied word to word from luminous website. Divya – try to create your own content to earn money not by copying

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    I guess 130 Ah battery won’t be enough for 535 W load, we need to take DOD of battery and battery efficiency into consideration. Battery sizing will be bellow :

    =(535*3*100/80*100/85)/12 = 196 Ah

    VRLA Battery DOD- 80%
    VRLA Battery Efficiency – 85%

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