Wh to mAh calculation formula
Q(mAh) = 1000 × E(Wh) / V(V)
The electric charge Q in milliamp-hours (mAh) is equal to 1000, multiplied by the energy E in watt-hours (Wh), divided by the voltage V in volts (V).
mAh = 1000 × Wh / V
milliamp-hour = 1000 × watt-hour / volt
Energy (E) = 5Wh
Voltage (V) = 8V
Electric charge (Q) = 1000 x 5Wh / 8V = 625mAh