The Efest Slim K4 USB Type-C Charger is an intelligent, four-bay, lithium battery charger for vapes, with a Type-C USB charging port. The SLIM K4 Charger can charge four batteries at once and is designed with some smart functions, such as:
- auto-detect charging
- monitors and charges each slot independently
- low voltage smart activation recovery
- 0V activation recovery.
It is a safe battery charger to charge your electronic cigarette (e-cigarette) external batteries with its built-in intelligent protection chip.
Charge practically any size Lithium Ion (Li-ion) IMR 3.6V/3.7V batteries, including: 10440, 14500, 16340, 17340, 18350, 18490, 18500, 18650, 26500, 26650, 20700, 21700.
The LED indicator will show you the status of charger. The indicator light will turn
- blue in standby mode/full charged
- white while charging.
- A USB port with at least 2A output is recommended.
- See our battery safety blog post for information on safely using your e-cigarette batteries.
Features & Specs
- Compatible with: Li-ion 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 26500, 26650
- Charging rate: 4 x 0.5A, 3 x 0.5A, 2 x 1A, 1 x 1A
- Auto voltage cutoff: 4.20V±0.05V
- Operation temperature: 0˚C - 40˚C
- Input: Type-C USB DC 5V 2A
- Efest Slim K4 USB-C Charger
- Type-C USB power lead
- User manual
- Warranty card