How Much Electricity Does A Mobile Phone Charger Use. A 2012 study at the Lawrence Berkeley National Laboratory found that an idle charger drew 026 watts on average. For tablets it is usually around 20A at 50V.
For tablets it is usually around 20A at 50V. For phones it is usually around 12A at 50V. So how much power does a mobile charger consume.
Lets say 2000mAh 37V battery so 8Wh.
3 - Lets assume the charger circuitry in your phone has 80 efficiency and the USB PSU 60. A typical mobile phone charger is rated at anywhere between 3-7 W source. Power is priced in kilowatt hours KW h or 1000W which is 36 million joules of energy. Also calculate running cost of A Phone Charger for an hour day week and year by entering number of hours used in a day.
