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Watts to mAh

mAh to Watts
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Example of Watts to mAh Calculations

To convert watts (W) to milliampere-hours (mAh), you need to know the voltage (V) of the battery. The formula to convert watts to mAh is:

mAh = Watts×1000/Volts

Assuming a common voltage of 3.7V, which is typical for lithium-ion batteries.

Table of Watts to mAh Conversions

Below is a table showing the conversion of various watt values to mAh, sorted from smallest to largest, assuming a voltage of 3.7V.

Watts (W)Voltage (V)mAhWatts (W)Voltage (V)mAh
5.003.701351.3510.003.702702.70
15.003.704054.0520.003.705405.41
22.503.706080.4130.003.708108.11
40.003.7010810.8165.003.7017567.57
100.003.7027027.03150.003.7040540.54
160.003.7043243.24200.003.7054054.05
300.003.7081081.08500.003.70135135.14
600.003.70162162.161000.003.70270270.27

Convert 10 Watts to mAh

To convert 10 watts to mAh at 3.7V:

mAh=10×1000/3.7≈2702.70 mAh

Convert 20 Watts to mAh

To convert 20 watts to mAh at 3.7V:

mAh=20×1000/3.7≈5405.41 mAh

Convert 100 Watts to mAh

To convert 100 watts to mAh at 3.7V:

mAh=100×1000/3.7≈27027.03 mAh

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