Mobee Technology Magic Bar - Inductive Charger for Apple Bluetooth Keyboard and Magic Trackpad (MO3212) Charging your Apple Bluetooth Keyboard and Magic Trackpad will be as simple as sliding your device in the Magic Bar. Work with Apple Bluetooth Keyboard (2xAA Battery Model) and Apple Magic Trackpad A greener way to use your Apple Bluetooth Keyboard and Magic Trackpad The Magic Bar is cost effective after one year of home usage & six months of office usage Plug the base station to any USB port in order to allow the recharge, no external power supply needed. Made of Aluminum and recyclable If it is the first time charging or the battery power is low or dead it will blink green for long time,. You may or may not be able to type while it is charging. It depends on the power in the battery. Also, check to make sure the battery is intact.