The Efest K2 Double Bay USB Charger is a dual-bay charger that plugs into any USB power output. It can charge your 18650 batteries as well as many other styles of cylindrical batteries including 18350, 18500, 20700, 21700 and 26650 batteries.
The Efest K2 Double Bay USB Charger is a dual-bay charger that plugs into any USB power output. It can charge your 18650 batteries as well as many other styles of cylindrical batteries including 18350, 18500, 20700, 21700 and 26650 batteries.