Efest Slim K1 Battery Charger is compatible with the following battery sizes:
20700, 26650, 18650, 18500, 18350, 17340, 16340, 14500, 10440, 26500, 21700.
You’ll be hard pressed to find a more compact charger than the Efest Slim K1. Packed into its incredibly small body is every function you would expect in a smart charger, from fast charging to reverse polarity protection. A quality charger for demanding consumers, the Efest Slim K1 will not let you down. BATTERY NOT INCLUDED.
1A fast charge
Accepts 3.6V or 3.7V batteries of various sizes
Reverse polarity protection
Short circuit protection
It comes with:
1 x Efest K1 Battery Charger
1 x Micro USB Cable
1 x User Guide
1 x Scratch Check Label