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Nitecore UM20 Battery Charger

Nitecore UM20 Battery Charger

Capable of charging Li-ion batteries and an external device, simultaneously. 

  • Powers Li-ion batteries and an external device simultaneously.
  • USB charging input and output
  • Data transfer
  • Intelligent charging program
  • LCD display presents charging status
  • Fire retardant materials
  • Insured worldwide
Reverse Polarity Protection - An "EE" will be displayed on the LCD and charging process for the respective slot will be terminated when a backward installed battery is detected. It intelligently detects input power and prioritizes charging process based on user preference. 


Micro USB DC 5V

Output Voltage:

4.2V ±1% / 5V

Output Current:

1000mA / 500mA

Compatible With:

Li-ion / IMR: 
18650, 18490, 18350, 17670, 17500, 16340(RCR123), 14500, 10440