Does Laptop Charger Consume Electricity. Wernher von Braun here in hell and he agrees If its hot its using. Typical household voltage for example in India is 220 V.
We plugged in a variety of chargersiPhone iPad MacBook Android phone and tablet Windows laptop Chromebook and even Nintendos 3DS charger. Your laptop will still consume standby power even if it is in shutdown. This means that if a laptop is on for eight hours a day it will cost 5p a day to run the laptop based on an average energy unit cost of 125 pkWh.
In such a situation the charger will still draw a minimal current from the mains and the regulator will maintain a steady supply of 5 V.
My laptop charger uses 0 watts as measured by a watt-meter. Since the charger is not connected to the laptop the load it will result in a waste of electricity but it would be a very very small amount. An EE and I tested a car ipod charger to find out exactly that. Cell phone chargers only use electricity when they are charging LaMay explains.
