VA rating
How much load the inverter can carry at once.
Why it matters
Total watts you'll run ÷ 0.7 = needed. Overloading trips or damages the unit.
What to check
Add up actual wattages: fan 75W, tube 20W, TV 100W, fridge 200W (surge much higher).
Home appliances
Home Inverter & Battery
People buy an inverter by price and then wonder why the fan stops in an hour. The inverter's decides how much you can run; the battery's Ah decides how long.
Quick answer
Calculate for total load plus surge.
150 Ah tubular battery for 3–4 hour backup of basics.
Pure sine wave for fridge/ safety.
Check local service and battery water top-up.
In the shop
Ask the salesperson this exact question
Read these off your phone at the counter. The answer tells you more than the price tag.
1.“What is the battery capacity in Ah, and what backup will it give for my exact load?”
A good answer: They should add up your fans, lights and TV before answering in hours.
2.“Is it tubular or flat-plate, and what is the pro-rata part of the warranty?”
A good answer: Tubular for daily cuts; a clear split between free-replacement and pro-rata years.
Find your fit
A few questions about your situation, not about the product.
0/20
Add one short need not covered above.
Answer all 2 questions to see the spec sheet to shop with.
Does it fit your budget?
Most home inverter & battery purchases are financed. Check the monthly outgo and the interest you actually pay before you decide which spec level you can afford.
Monthly EMI
₹2,942 (≈$35)
Total interest
₹1,481 (≈$18)
Total paid
₹26,481 (≈$320)
A no-cost EMI offer should make this equal the price.
Reducing-balance calculation. Processing fees, GST on interest and insurance are not included, so confirm the final schedule with your lender. USD values are approximate.
Battery care
A battery trolley and regular maintenance extend inverter backup life, especially in hot climates.
Battery trolley
Keeps the battery ventilated and off the floor; spills stay contained.
Distilled water top-up
Tap water minerals damage battery plates; use distilled or demineralised water only.
These are common add-ons for this category, not recommendations. Prices and availability vary; confirm fit and compatibility on the product page before buying.
Extended warranty & AMC — what to check before you say yes
Every new appliance already carries a brand warranty. An extended plan or AMC only adds value where it covers the parts that actually fail, with on-site service in your city — so read the cover, not the discount.
Ask these five questions
- ✓Which parts are covered, and is the most expensive part (motor, compressor, panel) covered in full?
- ✓Is service on-site at home, or carry-in to a centre?
- ✓Are periodic services and consumables included, or billed separately?
- ✓How many claims are allowed, and is there a per-claim or total payout cap?
- ✓What does a claim need — original invoice, serial number, purchase within X days?
Usually not covered
- ×Physical damage, liquid ingress and pest/rodent damage
- ×Voltage surge damage where no stabiliser was used
- ×Consumables: filters, gaskets, belts, batteries
- ×Cosmetic parts and accessories
Rule of thumb: a plan is rarely worth it if it costs more than ~15% of the product price, if the item is cheap to repair locally, or if the brand's own service network in your city is already strong.
These are comparison links, not recommendations — we don't sell plans and we don't rank providers. Some outbound links on KnowBeforeBuy are affiliate links. Cover, exclusions and pricing change; read the plan document before you pay.
Buy it locally
Shops near you that stock home inverter & battery
Sometimes the local dealer beats online on price, installation or the exchange offer. Tell us where you are and we'll list nearby stores. We don't rank or take money from any shop; results come from Google Maps.
The area you enter, or coordinates rounded to about 1 km if you use your location, are sent to Google Maps through Lovable to find places. Lookups are temporarily cached for up to 30 minutes.
The spec sheet, decoded
Battery capacity (Ah)
How long it can supply that load.
Why it matters
Backup hours ≈ (Ah x 12 x 0.7) ÷ load in watts.
What to check
150 Ah tubular is the common sweet spot for 3–4 hours of fans and lights.
Sine wave vs square wave
Shape of the output current.
Why it matters
Pure sine wave is required for fridges, computers and modern TVs; square wave hums and heats motors.
What to check
'Modified sine' is a compromise — avoid it if you'll run a fridge or .
Battery type: flat plate vs tubular vs lithium
Construction of the battery.
Why it matters
Tubular lasts 4–5 years with deep cycles; flat plate is cheaper but dies faster; lithium is maintenance-free and compact but costly.
What to check
Tubular needs distilled water topping every 3–4 months.
Charging current & warranty
How fast it recharges and how the warranty is split.
Why it matters
In areas with long cuts, higher charging current matters. Battery warranty is often part full, part pro-rata.
What to check
Ask exactly how many months are full replacement vs pro-rata.
Before you pay
- ✓List every appliance you want on backup and add up the watts.
- ✓Pick = total watts ÷ 0.7, then Ah for the hours you need.
- ✓Insist on pure sine wave if a fridge, or modern TV is on backup.
- ✓Confirm full-replacement warranty months vs pro-rata on the battery.
Common traps
- !Combo offers where a big inverter is paired with an undersized battery.
- !Square-wave inverters sold for homes with computers.
- !Ignoring fridge surge current — it can be 3x the running watts.
700 basic setups to 1500 VA sine-wave with tubular batteries.