Do Cell Phone Chargers Use Electricity When Not In Use. Cell-phone chargers from five manufacturers and found that none of them used a measurable amount of power when not charging a phone. The best way to help cut costs and electric use is to get a power cord that can be switched off when appliances are not in use.
I think in terms of power consumption for me worrying about how much Im paying for electricity I dont think its a factor. One of them did use power when connected to a fully charged phone but it was less than half a watt. Its very little energy not enough to drain your battery but it does use energy.
The 21A output from the 6000mAh onboard battery provides more than enough charge for any cellphone and even produces enough electricity to keep tablets and laptops running long past their due date.
Although this amount could be as little as 25 watts imagine that over 4-5 devices combined for a year consume more energy than you passively consume. Wernher von Braun here in hell and he agrees If its hot its using power. The reason is the transformer. The best way to help cut costs and electric use is to get a power cord that can be switched off when appliances are not in use.
