The Efest Slim K1 smart charger is a one-bay battery charger, designed to recharge a single vape battery, compatible with a range of 18650, 18500 and other battery types.
When charging, mounted LED indicators display the charge level of your batteries, glowing blue when fully charged. When not in use we recommend you unplug and store the K1 safely.
There are multiple safety protections built into the Efest K1 Charger, these include: reverse polarity protection and overcharge protection.
A full list of compatible batteries can be found in the user manual, these include 18500 batteries, 18650 batteries. Always check your batteries are compatible with the K1 before charging.
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I used to charge my batteries straight though my mod but after using this I found that the quality of the vape I get from my uwell nunchaku is now a lot better and doesn't overheat. Good stuff