Battery Runtime & Pack Sizing

Runtime from Ah or mAh capacity, load current and efficiency, with usable energy in Wh, a series and parallel pack ladder, and a Peukert discharge derate that only ever shortens the run. Shows the naive no-derate answer next to the derated one.

Math & convertBatteryRuntimePeukertSizing

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Battery Runtime & Pack Sizing screenshot

Capacity unit

Capacity

Nominal voltage

Load current

Efficiency %

Cut-off voltage

Self-discharge %/month

Mode

Cells in series

Cells in parallel

Cell capacity (Ah)

Peukert exponent n

Apply Peukert derate Apply self-discharge over the run Show a discharge curve

Result

Runtime

Usable energy

Working

Item	Value

Series / parallel packs

Stage	Cell V	Cell Ah	Pack V	Pack Ah	Pack Wh	Runtime

Discharge curve

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