Ultrafire battery charger WF-139

Ultrafire battery charger WF-139

Ultra power
Regular price
350.00 ฿
Sale price
350.00 ฿
Unit price
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Charger UltraFire WF-139


This charger has been around a long time and in many versions. One of the first version had a very bad reputation, but the current versions is better. The version I test here is from AW. The charger is a two channel charger that can fit up to two 18650 batteries. The four terminals at the sides are not connected.

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The charger has a connector for the mains lead and is sold with different mains leads depending on country. The mains supply can be from 100 to 240 VAC and 50 to 60 Hz. It can also be connected to a 12 volt source, i.e. a car.
There is two leds, they are red when charging with a occasional green flash. At all other times they are green. This means that the led will be green if a battery with to low voltage is placed in the charger!


supportedBatterySizes DSC_6283 DSC_6284 DSC_6285 DSC_6286

The charger can handle up to 68 mm long batteries, this does not include all brands of protected 18650 batteries (See my 18650 LiIon comparison for length of different brands).