The Efest XSmart Charger features over-voltage, over-discharging. short circuit and reverse polarity protection. Can use USB output to charge other devices from an inserted battery.

Specifications
Charges a single18650, 18350, 18500, 18490, 18700, 17500, or 14500 Li-Ion Battery. 

In The Box
1 Efest XSmart Single Bay Charger
1 USB Cable
1 Draw String Bag