Efest Slim K4 USB-C Charger | 4-bay

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Slim K4 USB-C Charger (4-Bay)

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SKU: 121 Categories: , ,


SLIM K4 Charger is a intelligent charger that with a Type-C USB charging port. It is compatible with Lithium IMR 3.6V/3.7V batteries: 10440, 14500, 16340, 17340, 18350, 18490, 18500, 18650, 26500, 26650, 20700, 21700. LED indicator will show you the status of charger: indicator turns blue in standby mode/full charged, white color in charging. SLIM K4 Charger is designed with some smart functions, such as auto-detect charging, monitors and charges each slot independently, low voltage smart activation recovery function, 0V activation recovery function. Besides, it is safe for you to use with built-in intelligent protection chip.

Quick Links:


  • LED indicator description
  • Auto-detect charging
  • Safe charging mode: CC & CV
  • Safe and convenient USB charger (5V 2A)
  • Monitors and charges each slot independently
  • Low voltage smart activation recovery function
  • Incredibly lightweight and conveniently portable
  • Type-C USB charging port design
  • Built-in intelligent protection chip
  • 0V activation recovery function
  • High quality ABS fire-retardant material & electronic component
  • Safety protections: Short Circuit/Automatic Over-charging/Automatic Over-discharging/Reverse
  • Polarity/0V Activation Recovery/Hardware and Software Double Protection


  • Efest SLIM K4 Charger
  • Manual Card



Additional information

Weight 0.45 lbs
Dimensions 1.57 × 4.72 × 7.09 in

Slim K4 USB-C Charger (4-Bay)