Home Inverter & Battery Capacity Calculator (India 2026)
Select the appliances you need during power cuts. Our calculator determines the exact Inverter VA rating and Battery Ah capacity required for uninterrupted power.
Coupled with a 700 VA – 800 VA Pure Sine Wave Inverter.
Matches your 420W load perfectly with 4 hours backup, digital time-remaining LCD display, and 3-year warranty.
Frequently Asked Questions About Home Inverters
Why do ceiling fans hum on older inverters?
Older square-wave or quasi-sine wave inverters produce stepped electrical waveforms with high harmonic distortion. This causes inductive fan motor windings to vibrate violently and hum. A modern Pure Sine Wave inverter completely eliminates fan humming.
What is the advantage of a Tall Tubular battery over Flat Plate?
Tall Tubular batteries use high-pressure die-cast spines that resist corrosion from deep discharges. They offer over 1,200 discharge cycles (lasting 5 to 7 years) compared to flat plate batteries, which typically deteriorate within 2 to 3 years.
How does switching to BLDC fans help my inverter?
A traditional induction ceiling fan consumes 75 Watts. A BLDC fan consumes only 28 Watts at speed 5. If your home runs 3 ceiling fans, you reduce continuous load from 225W to just 84W, literally doubling your battery backup duration!