kWh (kilowatt-hour), Wh (watt-hours), mAh (milliampere-hour), V (Volts)
Unit 1 ya shilingi mia tatu ni sawa na 1000 Wh ( 1 kWh)
Tuchukue mfano wa simu ya smartphone yenye betri kubwa ya 4,000 mAh
Simu nyingi huwa ni 3.7V
Formula ya kubadilisha mAh kuwa Wh:
(Mah * V)
1,000
(4,000 *...