Don't be fooled by the designs. Bracketon's GreenZero series epitmoizes responsible energy consumption to the fullest. Both detect when a device is fully charged and inevitably shuts off to get rid of vampire consumption. The Mushroom models activate a charge once pressed and pops back up when full, and the Stone versions don a 1000 mAmp battery that powers mobile devices and switches off when charges are complete. Eco-budget breakers.