Make backup decisions
with clarity.

Size backup around essential loads.

Start with a load list

List the appliances that must work during an outage, their power and the expected hours of use. As an illustrative energy calculation, a steady 200 W load for five hours needs 1 kWh at the load before conversion losses and reserve allowances.

Ask for usable energy

Nameplate battery capacity is not always fully usable. Ask the designer to explain permitted depth of discharge, power limits, temperature conditions, conversion losses and the reserve setting. The inverter must support the selected battery and the required backup circuits.

Understand the ownership cost

Read warranty conditions covering time, cycles or energy throughput and any monitoring requirements. Include servicing and possible replacement in a long-term budget. A battery can serve a backup need even when its effect on financial payback is less attractive.

Check inverter questions · Plan running costs

बैटरी चुनते समय केवल Ah नहीं, उपयोग योग्य kWh, लोड की शक्ति, बैकअप समय और इन्वर्टर की अनुकूलता पूछें।