Efest Slim K2 USB Battery Charger is a dual slot lithium Ion battery charger with micro USB input that can be used for vape batteries. The Slim K2 charges your electronic cigarette (e-cigarette) batteries at 1A and each slot is monitored independently to provide the most efficient charge. An LED indicator light also lets you know when the vape battery is charging and when it's fully charged.

It is an intelligent battery charger with safety features including: reverse polarity, short circuit, overcharge protection and many more.

Note: a 2A USB port is recommended.

Efest Slim K2 USB Battery Charger Specifications:

  • Two-bay charger can charge up to two batteries simultaneously
  • Compatible with many battery sizes, including: 18650, 20700, 21700 & 26650
  • Charging speed: 2 x 1A, 1 x 1A
  • Automatically stops charging
  • Reverse polarity protection
  • Input: Micro USB DC 5V 2A
  • Output: DC 4.20V±0.05V 1A*2/1A*1

Package includes:

  • EFest Slim K2 USB Battery Charger
  • Micro USB cable
  • User manual

Customer Reviews

Based on 3 reviews
Jordan Avery
Slim charger

Portable and good quality. USBC charging. Can charge your batteries in the car. Super useful and slim design

Great little charger

Does what it should, small n compact and very convenient.

Tara Jane Roberts

Efest Slim K2 USB Battery Charger

Efest Slim K2 USB Battery Charger


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