Efest Slim K4 USB-C Battery Charger can be used to charge external batteries of any size via a Type-C USB charging port. You can charge up to four batteries in this charger and it keep you safe with its built-in intelligent protection chip that includes smart functions such as:
- auto-detect charging
- monitors and charges each slot independently
- low voltage smart activation recovery
- 0V activation recovery.
The Slim K4 is compatible with Lithium IMR 3.6V/3.7V batteries: 10440, 14500, 16340, 17340, 18350, 18490, 18500, 18650, 26500, 26650, 20700, 21700.
The Efest Slim K4 charger will even tell you what it's doing with its LED indicator colour light that will turn blue in standby mode/full charged and white when charging.
Please note: a 2A USB port is recommended.
EFEST SLIM K4 USB-C BATTERY CHARGER SPECIFICATIONS:
- Four-bay charger can charge up to four batteries simultaneously
- Compatible with many battery sizes, including 18650, 20700, 21700 & 26650
- Charging speed: 4 x 0.5A, 3 x 0.5A, 2 x 1A, 1 x 1A
- Automatically stops charging
- Reverse polarity protection
- Input: Type-C USB DC 5V 2A
- Output: DC 4.20V±0.05V 0.5A*4/0.5A*3/1A*2/1A*1