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TOOL IDB-ELE-002
Battery runtime

Desktop only

Engineering tools are available only on desktop screens.

Battery runtime estimator

Operating hours from battery capacity, average load, and usable-capacity derating. For early hardware planning.

Battery & load runtime = (C · derate) / I
—% — mAh I = — mA Load — h
State of charge over time linear discharge at constant load
100% 50% 0% SOC cutoff — 0 h — h Time →
Engineering notes

Formula

  • Runtime [h] = (Capacity [mAh] · Derate) / Load [mA]
  • Usable capacity (Li-ion): 80% typical, 70% conservative.
  • Real loads aren't constant — add 20% margin for inrush, peaks, BMS.

Result

Live