The einhell usb battery adapter te cp 18 li usb solo is a practical and mobile external power source for charging a mobile phone tablet mp3 player and many other small power consumers which are used on the move the power supply is from a system battery from the innovative power x change family for delivering plenty of power to recharge the empty consumer products at any timethe 2 usb ports on the housing two devices can be recharged simultaneously for fast charging one of the usb por