Battery Bank Calculator

Series/parallel bank voltage, Ah, and Wh.

Single battery Ah (Ah)

Single battery V (V)

Parallel strings

Series count

Estimates only. Verify with local codes, manufacturer specs, and a qualified installer.

Related calculators

Continue sizing with a related tool.

Size Ah and Wh from load, hours, and days of autonomy.

How long will your battery run a given load?

Battery Wh and Ah from daily load and backup days.