Marine Battery Calculator

Size your marine battery bank based on electrical loads, autonomy requirements, and charging capacity.

Daily Load (amp-hours)

System Voltage (V)

Days of Autonomy

Battery Type

Charger Output (amps)

Battery Ah Rating (each)

Total Bank Size Needed

amp-hours

Batteries Needed

Charge Time

Daily Wh

Usable Capacity

Reserve Margin

Related Calculators

Battery life estimates.

Solar battery sizing.

Marine financing costs.

Nautical distance conversion.

Energy unit conversion.

Buoyancy force calculations.