ULTRAFIRE
WF-139 FAST BATTERY CHARGER

Perfect charger for rechargeable lithium cells automatically
charges them to the level required will not over-charge cells
and will not charge over-discharged cells

Many protected 18650 batteries are actually 67mm long
The WF-139 will accept batteriers up to 68mm long

Features & Specifications:

- Ultrafire WF-138 charger for 14500 to 18650 batteries

- Independent charge channels for each battery

- Constant Current/ Constant Voltage Charge Method

- Charge cells from 50mm to 68mm long

- LED Status Light For Charging

- Output of 4.2v with variable current up to 550mA per channel