A little more staying power.

Build a battery bank. Follow its energy from stored capacity to useful backup time.

01 / Your battery bank

Unit voltage (V)Unit capacity (Ah)Units in series (units)Parallel strings (strings)Usable depth of discharge (%)Conversion efficiency (%)Constant connected load (W)

Use the manufacturer's allowed discharge and efficiency. Example values are not battery recommendations.

02 / ENERGY RESERVE

Full of potential.

80%

6.14hours of estimated backup

Nominal energy2.56 kWh

Useful energy1.84 kWh

Bank configuration12.8 V · 200 Ah

What is behind the estimate?

Wh = V × Ah × series × parallel
Runtime = Wh × discharge fraction × efficiency ÷ load watts.

A constant-load estimate, not a wiring guide. Aging, temperature, discharge rate, inverter idle draw and startup surges are excluded. Verify equipment compatibility and protection with a qualified installer.