DO MY CHARGERS STILL SUCK POWER WHEN MY GADGETS AREN'T CHARGING?

摘要

Afraid So. Chargers and power adapters, which convert AC power to lower-voltage DC current for gadgets like cellphones, often still use some energy after they've completed charging. In fact, "vampire energy"-power consumed by electronics left in standby mode-accounts for 5 to 10 percent of all U.S. household electricity consumption.rnGranted, your use may be relatively little, but there are steps you can take to limit thernamount of power your chargers waste. Start just by touching a plugged charger-if it's warm, it's using electricity. It's ideal to unplug adapters right after devices are fully charged; set an alarm for a few hours after you plug in to remind yourself to check on them.