Free sizing tool for home backup
Size your inverter and battery properly
Pick your home, adjust the appliances you want running during a power cut, choose how many hours of backup you need and tap Let’s plan. We work out the battery and inverter size, show the arithmetic, and point you at the LiFePO4 home battery we stock for it. Nothing here needs an email address.
This calculator covers home appliances only. It does not size electric-vehicle batteries.
Talk to a real engineer
Warranty, service and honest advice
If you are unsure whether a system fits your load, ask before you buy. We would rather talk you into the right size than sell you the wrong one.
Asked most often
- How do I choose the right battery for my vehicle?
- Match the voltage first: the pack must have the same system voltage as your vehicle’s controller — 48 V, 60 V or 72 V for most scooters, 51 V, 61 V or 64 V for e-rickshaws. Then choose capacity (Ah) for the range you need: more ampere-hours means more kilometres per charge. The mobility calculator works this out from your motor rating and daily distance.
- What payment methods can I use?
- UPI, credit and debit cards, net banking and wallets, through Razorpay. Paying by UPI takes ₹200 off the order. Card EMI is available at the payment step on your card issuer’s terms. Payment is taken online when you place the order.
- How much does delivery cost?
- Standard delivery is free on orders above ₹4,999. Below that a flat delivery charge applies and is shown in the cart before you pay. Batteries ship in protective crates at no extra charge.
- How long is the warranty?
- It is stated on every product page, in the manufacturer’s own words — for example 3 years or 1200 cycles on the LiEV e-rickshaw packs, and 5 years or 4000 cycles on the Powercube home batteries, whichever comes first.