Nitecore UM4 Intelligent USB Battery Charger


MSRP: $32.99
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Nitecore UM4 Intelligent USB Battery Charger


The Nitecore UM4 Intelligent USB Battery Charger is exactly that, intelligent. With a charging program specially optimized for IMR batteries, the UM4 can monitor the entire charging process, ensuring that the cut-off voltage is always within safe limits to maintain the lifespan of your cells. The UM4 will automatically selects between 3 charging modes (CC,CV, and -dV/dt) according to the type of battery and capacity. In addition, the UM4 Charger has manual charging settings unlike most other chargers, the charging parameters can be set manually to meet various charging needs.



  • LCD Display Screen showing you the charged volume / charging time / charging current / battery voltage / charging mode / cut-off voltage / battery type
  • The charged volume can check the actual battery capacity
  • Compatible with Li-ion/IMR/Ni-MH/Ni-Cd/LiFePO4
  • Charging Voltage is selectable: 3.7V / 4.2V / 4.3V
  • Charging Current is selectable
  • Long press "V" to restore the OVER-DISCHARGED IMR Battery
  • Will activate OVER-DISCHARGED Li-ion Battery automatically
  • Will automatically go dim and save energy
  • IMR / Li-ion / LiFePO4: 10440, 14500, 14650, 16500, 16340(RCR123), 16650,17350, 17500, 17650, 17670, 17700, 18350, 18490,18500, 18650, 18700, 20700, 21700, 22500, 22650,25500, 26500, 26650, 26700



Note: Batteries are sold separately.