Efest | Slim K4 USB-C Charger

The Efest Slim K4 USB-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 compatible with Lithium IMR 3.6V/3.7V batteries: 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.

Please note: 

• a 2A USB port is recommended.
• Batteries are NOT included. 
• Batteries available here
• See our battery safety page for information on safely using your e-cigarette batteries.
  

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

PACKAGE INCLUDES:

1 x Efest Slim K4 USB-C Battery Charger
1 x Type-C USB cable
Warranty card
User manual