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Folomov Key Charger for 3.6V and 3.7V Li-ion Batteries

Brand: Folomov
Brand: Folomov

Folomov Key Charger

Magnetic, Portable Li-ion Battery Charger

The Folomov Key Charger is one of the most convenient ways to charge your most utilized Li-ion batteries on the go! This portable smart charger is small enough to fit on your key chain and holds all the features of bulkier charging systems. Equipped with strong magnetic charging terminals and a standard USB charging port, you can charge your batteries where ever you need to! In case you need emergency back up power, you can install a Li-ion battery on the Key Charger and use the discharge current as a power bank! The green LED display shows you real-time charging status in 25% increments for your convenience. If you are using Li-ion batteries on a daily basis, this new charger is for you!


  • Incredibly lightweight and portable
  • Magnetic charging technology
  • Charging and discharging capabilities
  • Universal USB charging port for your convenience
  • Max charging/discharging current of 2A
  • Power bank function when discharging battery
  • Green LED display for charging status indicators
  • Smart microchip
  • Rapid charging
  • Automatically activates dead (0V) batteries
  • Several internal protections

Technical Specifications:

  • Number of Channels: 1
  • Display Screen or Indicators: Yes - Green LEDs
  • Max Charging Current: 2A
  • Max Discharge Current: 2A
  • Input and Output: DC5V 2A
  • Model: Key Charger
  • Compatible Batteries:

  • 3.6V/3.7V Lithium Ion (Li-ion) Batteries Only: 18650, 20700, 21700
  • Dimensions:

    • Length: 2.60" (66mm)
    • Width: 1.46" (37mm)
    • Depth: 0.67" (17mm)
    • Weight: 1.09oz. (31g)
    • Total Package Weight: 2.40oz. (68g)

    Note: This charger is designed to only be used with Li-ion batteries.

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