What is the energy in Wh of a 4000 mAh, 5 V battery?

Question

4000 mAh equals 4 Ah; Energy = Voltage × Capacity = 5 V × 4 Ah = 20 Wh.

GKToday Admin · Accepted Answer

20 Wh 4000 mAh equals 4 Ah; Energy = Voltage × Capacity = 5 V × 4 Ah = 20 Wh.

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