TOMO Mobile Power Boxes LCD Intelligent 4 Slot 18650 Battery Charger And Mobile Power Bank for Cellphone

Provides extra backup power to all devices that supports USB charging. E.g. iPhone, Android, tablets, MP3 players, GPS units, etc This unit takes 1-4 replaceable UNPROTECTED 18650 li-ion batteries to power and recharge your USB devices Powerbank can be recharged via micro USB port Charging management protection Processing monitoring protection Reverse battery protection