Does Leaving A Charger Plugged In Use Electricity. According to the Energy Saving Trust any switched on charger that is plugged in will still use electricity regardless of whether the device is attached or not. 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.
I just asked Dr. Cell Phones use approximately 2 to 6 watts when charging while a charger left plugged in without a phone will consume 01 to 05 of a watt. Also it wont cause any sort of damage to the charger.
Its very little energy not enough to drain your battery but it does use energy.
I wouldnt be surprised if all the adapters in a typical home add up to more than a few cents of power a month. Some gadgets such as the AC adapter in your smartphone will continue to supply energy even when the battery is fully charged or nothing is plugged in. How much electricity does a phone charger use when left plugged in. Since our handheld devices have become so important in day-to-day life many of us are in the habit of leaving chargers constantly plugged in.
