basic

Battery Amp-Hour & Runtime Calculator

Runtime = capacity (Ah) / load (A) × DoD × η.

Calculates battery runtime from capacity (Ah), load current, depth of discharge, and battery efficiency.

Nadia Almasri By Nadia Almasri
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
Was this helpful?

How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Runtime_h = (Ah × DoD × η) / I_load

In depth

Calculates battery runtime from capacity (Ah), load current, depth of discharge, and battery efficiency.