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Nitecore UM4 Intelligent USB Four-slot Battery Charger for AA , AAA, 18650 ,26500

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  • Nitecore UM4 Intelligent USB Four-slot Battery Charger for AA , AAA, 18650 ,26500
  • Nitecore UM4 Intelligent USB Four-slot Battery Charger for AA , AAA, 18650 ,26500
  • Nitecore UM4 Intelligent USB Four-slot Battery Charger for AA , AAA, 18650 ,26500
  • Nitecore UM4 Intelligent USB Four-slot Battery Charger for AA , AAA, 18650 ,26500
RRP: $49.00
$44.10 (You save $4.90)
Calculated at checkout

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 Product Description


The Nitecore UM4 charger is a fast and efficient USB charger that can charge up to four batteries with the option to control each bay independently. The charger has a maximum output of 1500mA in a single slot - please note, this is only achievable if using a 9V 2A QC 2.0 charging adapter. The charger features a charging programme specially optimised for IMR batteries which monitors the entire charging process, ensuring that the cut-off voltage is always within safe limits to extend the lifespan of the battery.

The Nitecore UM4 has a useful LCD display which relays real-time charging information. A short press on the 'V' button will cycle through details on the charged volume and charging time, charging current and battery voltage, battery type, cut-off voltage and charging mode. The charger will automatically select from 3 charging modes when the battery is inserted, according to the battery type and capacity. Alternatively, the charging parameters can be set manually to meet various charging needs; long press the 'C' button to enter the charging setting mode. 

The charger offers over-discharged IMR battery restoration. When an over-discharged IMR battery is inserted, the screen will show 'EE EE'; simply long press the 'V' button to enter restoration mode. The screen will also display 'EE EE' if a short-circuited battery is inserted or the cell is the wrong way round. 

The Nitecore UM4 is compatible with the following IMR/Li-ion/LiFePO4 batteries: 10440, 14500, 14650, 16500, 16340 (RCR123), 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26650, 26700 and the following NiMH/NiCd: AA, AAA, AAAA, C, D.

  • Intelligent USB Four-Slot Charger

  • QC 2.0 input available

  • Capable of charging 4 batteries simultaneously and controlling each slot independently

  • Up to 1,500mA charging speed in a single slot

  • Compatible with Li-ion and Ni-MH/Ni-Cd batteries with automatic detection

  • Automatic detection of battery power level and automatic selection of the appropriate voltage and charging mode

  • Automatic selection between 3 charging modes (CC, CV, and -dV/dt)

  • Energy-efficient LCD display for real-time charging information

  • Capable of manually selecting the charging cut-off voltage and the charging current

  • Automatic termination of large/small capacity batteries and automatic selection of appropriate charging current

  • Automatic termination upon charging completion

  • Reverse polarity protection and short circuit protection

  • Over-discharged battery activation

  • Li-ion battery restoration

  • Overtime charging protection

  • Automatic detection of battery internal resistance and display of battery health

  • Made from durable and fire-retardant PC materials

  • Optimal heat dissipation design

  • Certified by RoHS, CE, FCC, and CEC





Brand Nitecore
Model UM4
Compatible Battery
  • MR/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
  • Ni-MH/Ni-Cd: AA, AAA, AAAA, C, D
Input Voltage DC 5V/2A 9V/2 , 18W (MAX)
Output Voltage 4.35V±1% / 4.2V±1% / 3.7V±1% / 1.48V±1%
Output Current
  • QC Mode: 1,500mA*1 (MAX), 1,500mA*2 (MAX), 750mA*4 (MAX)
  • Standard Mode: 1,500mA*1 (MAX), 1,000mA*2 (MAX), 500mA*4 (MAX)
Input Type USB
Dimensions 159 x 107 x 41 mm
Weight 232.8g 



Package Includes


 1 x Nitecore UM4 Intelligent USB Four-slot Battery Charger for AA , AAA, 18650 ,26500



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