Ultrafire WF-139 Charger for 3.7 Li-ion Batteries (18650, 14500 and more)

Ultrafire WF-139 Li-ion Multi-Battery Charger 

- Ultrafire WF-139 Lithium battery charger (2-slot)
- Charges 3.6v/3.7v 18650, 14500, 17500, 18500 or 17670 lithium-ion batteries.
- Universal 100V-240V, 50-60Hz auto AC switch
- Charge single or two batteries at a time
- Two separate charging channels - batteries can be mix-charged
- Auto-off when batteries are fully charged 
- Dimensions: Length: 5.31"(13.5 cm), height: 2.36"(6.0 cm), width: 1.18"(3.0 cm), weight: 7.58 oz(215 gram) 
- Output: 4.2V @ 450mA 
- Charging time: 4 to 6 hours for 18650 batteries