Solar Gear Spot

Battery converter

Convert amp-hours to watt-hours.

Amp-hours only make sense when you know voltage. Convert Ah to Wh so batteries and power stations can be compared on the same basis.

Quick result Run estimate

A 100Ah 12V battery stores about 1,200Wh before usable reserve.

Inputs

Planning assumptions

Use this as a planning estimate

Small solar and backup-power estimates depend on real device draw, temperature, battery age, sun, shade, and product limits. Use the result to narrow a shopping range, then verify exact specs before buying.

Planning notes

What this calculator is checking

Formula

Ah x V = Wh

A 100Ah battery at 12V is around 1,200Wh. At 24V, the same Ah rating stores about twice as much energy.

Usable

Stored is not always usable

Reserve, inverter losses, and battery limits reduce practical output.

Related

Solar recharge time calculator

Check whether a panel can refill the battery within your usable sun window.

Open calculator