Single Slot 18650 / 18500 / 14500 / 17500 3.7V Rechargeable Li-ion Lithium Battery Charger - 5V USB Plug Wire

Specification:
Input voltage: USB Plug (5V)
USB Wire Length : 10cm+- (Short only)
Output voltage: 3.7V/500mAh
End-of-charge voltage: ~ 4.2V
Suitable for: 3.7V lithium rechargeable batteries, including 18650/14500/17500/18500/17670/26650/10440/16340
With LED indicators 
SIngle Slot Charger maximum charge 1 unit battery
Stable performance.
Check battery polarity 1st before connect to charger, no protection circuit.