The Nitecore UM2 is an advanced intelligent USB charger designed to deliver rapid and efficient charging for your batteries. With a total maximum output of 3000 mA, the charger provides fast charging performance. For optimal charging speed, a 9V 2A QC 2.0 charging adapter is required.

Key Features

• Optimized Charging Program – Specifically tailored for IMR batteries, the UM2 continuously monitors the charging process, ensuring the cut-off voltage remains within safe limits to help extend battery lifespan.
• Single Slot Output – Each charging slot provides a maximum output of 1500 mA, allowing a 3500 mAh 18650 battery to reach approximately 80% charge in just 2 hours.
• LCD Display – The integrated LCD screen provides real-time charging information. A short press of the “V” button cycles through essential details:
  • Charged volume and charging time
  • Charging current and battery voltage
  • Battery type and cut-off voltage
  • Charging mode
• Automatic Charging Modes – The charger automatically selects from three charging modes when a battery is inserted, adapting to the battery type and capacity. For manual parameter settings, long-press the “C” button to enter charging setting mode.
• Over-Discharged IMR Battery Restoration – If an over-discharged IMR battery is inserted, the display shows “EE EE”. Long-pressing the “V” button enters restoration mode. The charger also displays “EE EE” if a short-circuited battery is detected or if the battery is inserted incorrectly.

Compatibility

The Nitecore UM2 charger is compatible with a wide range of IMR, Li-Ion, and LiFePO4 batteries, including:

10440, 14500, 14650, 16500, 16340 (RCR123), 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26650, 26700
NiMH/NiCd batteries: AA, AAA, AAAA, C, D

Suitable for

Emergency preparedness kits
Power outages
Camping and trekking
Vehicle and household backup