Does Charging A Phone Use A Lot Of Electricity. The amount they use while not attached to the appliance is limited. So little that you will hardly notice it on your monthly electricity bill.
Some of the chargers likely use more power than others so the real cost to leave your smartphone charger plugged in for an entire year is probably below 13 cents. Does A Laptop Use More Power When Charging. A typical smartphone uses about 5 watts of electricity while charging.
At an average price of 12 cents that means that your phone uses about one quarters worth of electricity per year.
So simply leaving one plugged into the wall shouldnt make a difference. Author Eric Ravenscraft suggests wireless charging could use as much as 47 percent more power to charge your phone. The amount of electricity produced from this only costs a few pence but it will shorten the shelf life of the charger. In fact depending on how the phone is configured it can draw more power when plugged in to a charger than it would if it was running off of its internal battery using this current to provide a brighter display longer backlight on time before standby higher CPU performance etc.
