This technology designed by OSUNGO is the most eco-friendly way to charge mobile devices while eliminating the wasteful stand-by consumption that other chargers consume when they are left plugged into the AC outlets. You no longer need to worry about unplugging your charger or switching off the power strip to save energy. When the electronics detect the device is fully charged or unplugged, It automatically shuts off between 0mW and 10 mW stand-by power to save energy and lengthens the life of your batteries by limiting the top off charging time.