mAh to Wh Conversion

Electric battery capacities are measured in mAh. When you plan to bring a battery into an airplane, its size is usually restricted based on Wh.

mAh → Wh

Capacity mAh
Voltage V

mAh equals to Wh on V.

3.7V cheat sheet
mAh Wh
3,000mAh 11.0Wh
5,000mAh 18.5Wh
10,000mAh 37.0Wh
15,000mAh 55.5Wh
20,000mAh 74.0Wh

Wh → mAh

Energy Wh
Voltage V

Wh equals to mAh on V.

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