Nitecore UM20 USB Battery Charger


MSRP: $15.99
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Nitecore UM20 USB Battery Charger


The Nitecore UM20 USB Battery Charger is a versatile USB-powered charger for lithium-ion and IMR batteries. An intelligent power management system automatically detects the input power, evenly distributes charging power, and can select the appropriate charging current based on the recognized battery in place. Besides charging lithium-ion cells, this charger also provides USB output power, enables data transfer via USB, features an integrated USB cable winder, and supports both 2.5mm and 3.0mm-thick USB cables. Priority Mode can be used to manually select either USB or battery charging, and an integrated LCD monitor clearly displays the charging status.



  • Double-bay USB-powered lithium-ion battery charger.
  • LCD monitor clearly displays real time charging status.
  • Supports USB output charging as well as data transferring.
  • Intelligent power management system can automatically detect the input power and evenly distribute the output power.
  • Either battery or USB charging can be manually selected using the Priority Mode.
  • Based on the recognized battery capacity, the charging current will be automatically selected.
  • A rear USB cable winder incorporates grooves to accept either 2.5mm or 3.0mm-thick USB cables.
  • The charger features reverse polarity protection, is designed for optimal heat dissipation, and is constructed from fire retardant materials.
  • Battery Compatibility: Lithium-ion/IMR types: 18650, 18490, 18350, 17670, 17500, 16340 (RCR123), 14500, 10440


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Note: Batteries are sold separately.