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Nitecore UM2 Intelligent USB Dual-Slot Charger for Li-ion, Ni-Cd, and Ni-MH

Front view of Nitecore UM2 battery charger
Front view of Nitecore UM2 battery charger
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Nitecore UM2 Intelligent USB Dual-Slot Charger

Quick and Intelligent Charging

The Nitecore UM2 Charger is an intelligent USB dual-slot charger that will change the way you charge batteries. The UM2 has a QC input that enables a total max output of 3000mA, so that you can realistically charge a single 3,500mAh battery up to 80 percent in 2 hours in one slot. You will be able to charge batteries quickly and put them back to use just as fast with the Nitecore UM2. This charger has the capability to charge two batteries simultaneously while controlling both of the slots independently, meaning that you will be able to see how much charge your batteries get without worrying about any discharge making your batteries last much longer. The Nitecore UM2 will automatically detect your battery's charge level and provide appropriate voltage and charging time to ensure the safety and longevity of battery life.

The Nitecore UM2 Charger is equipped an LCD display so you can watch your batteries charge in real-time and see the information in a quick glance. You will never worry about your batteries overheating, overcharging, or losing power because you will know as soon as the charger does. Moreover, this charger has a unique cooling fin design that dissipates heat rapidly to enable a cooling performance while simultaneously protecting you and your batteries from possible hazards. Plus, with the addition of intelligent temperature regulation, this charger will not overheat and ensure the stability of the charging process. These features make the Nitecore UM2 Charger a necessity in making sure your rechargeable batteries last and last.

  • Intelligent USB Dual-Slot Charger
  • QC 2.0 Input available
  • Capable of charging 2 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 detection of large/small capacity batteries and automatic selection of appropriate charging current
  • Automatic termination upon charging circuit protection
  • Reverse polarity protection and short circuit protection
  • Over-discharged battery activation
  • Li-ion battery restoration
  • Overtime charging protection
  • Made from durable and fire-retardant PC materials
  • Optimal heat dissipation design
  • Certifed by RoHS, CE, FCC, and CEC

  • Input - DC 5V/2A 9V/2A 18W (Max)
  • Output - 4.35V±1% / 4.2V±1% / 3.7V±1% / 1.48V±1%
  • QC Mode - 1,500mA*2 (MAX)
  • Standard Mode - 1,000mA*2 (MAX)
  • Compatible With:
    • IMR/Li-ion/LiFePO4: 10440, 14500, 14650, 16500, 16340 (RCR123), 16650, 17350, 17500, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 22650, 25500, 26500, 26650, 26700
    • Ni-MH/Ni-Cd: AA, AAA, AAAA, C, D
  • Dimensions - 5.98" x 2.87" x 1.57" (152mm x 73mm x 40mm)
  • Weight - 5.23oz (148.3g)
Charge Channels:2
Supported Chemistries:IMR, Li-Ion, LiFePO4, Ni-Cd, Ni-MH
Compatible Battery Sizes:10440, 14500, 14650, 16340 / RCR123A, 16500, 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26500, 26650, 26700, AA, AAA, AAAA, C, D
Charge Current:3000mA
Batteries Included:No
Product Certifications:CE, CEC, FCC, RoHS
Warranty:Battery Junction 30-Day Warranty
Return Policy:Battery Junction Return Policy
Product Weight:5.23oz
Product Dimensions:5.98" (L) x 2.87" (W) x 1.57" (H)
Country of Origin:China
3 Reviews
67% (2)
33% (1)
0% (0)
0% (0)
0% (0)
By David
Reno, Nevada
Premium quality
October 24, 2019
This charger compliments the two other Nitecore products I own.
It's just right for my office and hand to have two cells always ready.

It's a brand I trust to leave unattended and protect against catastrophic discharge if the cell is shorted.
By Joe
Nice charger
June 11, 2019
It is nice to have a display for useful battery info. High quality feel with a low cost. Seems to charge batteries to proper levels and data displayed is accurate
By Jason
Nice compact charger
February 19, 2019
Works great. Smooth springs. Nice display.
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Nitecore UM2 Intelligent USB Dual-Slot Charger for Li-ion, Ni-Cd, and Ni-MH

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