Wh to mAh Calculator
Result
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Common Voltages
Li-ion: 3.7V nominal
Li-Po: 3.7V nominal
NiMH: 1.2V per cell
Lead-acid: 2V per cell
Li-ion: 3.7V nominal
Li-Po: 3.7V nominal
NiMH: 1.2V per cell
Lead-acid: 2V per cell
mAh = (Wh × 1000) / V. Example: 10 Wh at 3.7V = (10 × 1000) / 3.7 = 2703 mAh.
Wh is more useful for comparing batteries of different voltages. mAh only works for comparison at the same voltage. Airlines use Wh limits for lithium batteries.