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Efest Slim K2 Battery Charger


Product Description

Even Nikola Tesla would be impressed with the power and functionality of the Efest Slim K2 Charger! Efficiency at its finest, the Efest Slim K2 Charger is a 2-bay charger with a lightning-fast 1A CC current. Awesome features are running amok through this charger: reverse polarity, over-charging detection, and short circuit protection. The Efest Slim K2 Charger comes equipped with a steel cathode with low resistance and hard chromium plating processing for a precise charge and is also locked and loaded with a piano wire spring for a smooth slide for your batteries (tested over 15,000 times for quality control!). Two LED light indicators on top show the status of your charge as this charger supports any 3.6V/3.7V lithium battery. Charge up your batteries in the best way possible with the Efest Slim K2 Charger!


  • Fast charging mode 1.0A
  • Portable design with high-quality piano strings
  • Battery Life LED Indicator light
  • Reverse polarity protection
  • Activation function
  • Auto detect charging function
  • Over charging protection
  • Short circuit protection
  • Single Slot 5V/1A Micro USB Charger


  • AC Input Power: AC 100~240V 50/60Hz
  • DC Output Power: DC 5V 1A
  • DC Input Power: DC 5V 1A
  • Operation Temperature: 0C ~ 40C
  • Storage Temperature: -40C ~ 70C
  • Fit to 3.6v or 3.7v lithium battery in different sizes


What’s In The Box:

  • Slim K2 Charger body
  • USB cable
  • Warranty card
  • Operation manual

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Product Review

Product Reviews

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  1. It's a great charger!

    Posted by Unknown on Aug 15th 2017

    I use this to charge my HG2 and love it so far. The only down fall is that when battery are charging the indicator light is either white for chartering or blue for charged. It doesn't show what ur battery level is while charging.

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