2-Bay Battery Charger for 18650, 21700, and 26650 Batteries

Charges and provides extra backup power to devices that supports USB charging. E.g. iPhone, Android, tablets, MP3 players, GPS units, and other devices. Carry multiple batteries with you to get virtually unlimited backup power on the go. Charge port on-board -- charge up your backup batteries from an USB port without carrying a separate charger.

Specifications:

• Will charge rechargeable 18650, 21700, 26650 Li-ion batteries 
• Over-discharged Li-ion Battery Activation
• Reverse Polarity Protection
• Short-circuit Protection
• Input: 5V/2A
• Output: 4.2V/1A
• Warranty: 30days Free Replacement