The consequences of those actions are actually rather serious, both at an individual level and a cumulative level. Routine overcharging of batteries is estimated to cost households close to $100 a year, and significantly shortens the life of the battery, which in turn leads to either purchasing a new battery, or often an entirely new device.
Cumulatively, in the U.K. alone £134 million (U.S. $210 million dollars) is wasted this way. At a time when many households worry about tightening their budget, unplugging your phone when it’s charged is an easy way to save some money. It also places a greater stress on natural resources, as that energy isn’t even put to good use, instead being converted to heat and lost.
So if you're looking to do your pocketbook – or mother nature – a favor, be sure to unplug your phones and laptops when they’re charged up.
source: Mail Online via Textually