Do Wireless Chargers Use More Electricity. With a flat Yootech wireless charger Ravenscraft said a full recharge consumed around 2101 Wh on average or more than 47 percent more energy. No wireless chargers do not stop charging when your device is full.
But if you quickly want a top-up your phone you should stick with a wired connection rather than a wireless one. Non-genuine chargers can draw a lot more power up to 10 to 20 times more based on my testing. 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.
Cell phone chargers only use electricity when they are charging LaMay explains.
Ad Read Expert Reviews Find Best Sellers. Most wireless chargers are cleverer than a dumb charger wart. A 5-watt charging pad will charge your smartphone just as quickly as a 5-watt1 Amp wall charger which is usually the kind supplied with your smartphone. It can be slower and less energy efficient than traditional cabled charging and that comparative lack of efficiency can mean that wireless charging wastes more energy by.
