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Efest SLIM K4 Type C USB Charger

by Efest
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The EFEST K4 Slim charger offers versatility and portability, making it an ideal choice for on-the-go charging needs. Compatible with a wide range of battery cells, this charger combines lightweight and compact design with stylish aesthetics.

Featuring a fast charging mode with auto-detection charging rates of 1 x 1.0A / 2 x 1.0A / 3 x 0.5A / 4 x 0.5A, the EFEST K4 Slim ensures efficient battery charging. Safety is paramount with this charger, incorporating reverse polarity protection to prevent damage from incorrectly inserted batteries, an activation function for dormant batteries, and an auto-detect charging function that adjusts to each battery's requirements.

Additional safety measures include over-charging protection and short-circuit protection, guaranteeing safe and reliable charging. The piano wire spring design allows for smooth insertion and removal of batteries, while the low resistance and hard chromium-plated steel cathode contribute to precise charging voltage and enhanced charging efficiency.

The EFEST K4 Slim charger is globally recognized and supported, meeting international standards and certifications such as FCC, CE, and RoHS. This underscores its quality, safety, and adherence to global technical standards.

Compatible with Lithium IMR 3.6V/3.7V Batteries:

  • 10440
  • 14500
  • 16340
  • 17340
  • 18650
  • 18490
  • 18500
  • 18650
  • 26500
  • 26650
  • 20700
  • 21700