Equipped with Quick Charge 2.0 processor, charging with a USB charger becomes unusually fast. Nitecore used the process, which was originally developed for smartphones, to optimise the power supply of the chargers. In addition to the 4-bay UM4 charger, the UM2 presented here was also equipped with this interface.

Two charging bays Nitecore Nitecore UM2 USB charger for round cells.

The Nitecore UM2 charger recognises the battery type, determined battery status, the charging status of the battery and automatically determines the correct charging procedure. Charging of batteries up to a length of 77mm e.g. protected 20700/21700 batteries, automatic battery internal resistance detection, calculation of the charged capacity as well as Li-Ion battery reactivation are further useful additions.

Allows charging of Li-Ion, Ni-MH, Ni-Cd and LiFePO4 batteries With a charging procedure optimised for IMR batteries the batteries are charged safely and gently. The LCD display shows the charging current, charging voltage, resistance and charging time for each charging slot. CE, FCC, ROHS and CEC certified.

The following battery types can be charged with the Nitecore UM2:

Li-Ion/LiFePO4:10440, 14500, 14650, 16500, 16340(RCR123), 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490,
18500, 18650, 18700, 20700, 21700, 22500, 25500, 26500, 26650, 26700 charging slot length 77mm.

Ni-MH/Ni-CD: AA, AAA, AAAA, C, D
Please note: For rechargeable batteries with a diameter of 22 mm or more, max. two cells can be charged at the same time.

Nitecore UM2 Product Information:

• Intelligent 2 bay charger
• Manual selectable charging current from 100mA - 1500mA per slot
• Integrated *QC 2.0 processor
• Total power in QC mode 3A (only with QC compatible accessories)
• automatic battery internal resistance detection
• calculation of charged capacity
• USB connectivity for many power sources. (USB adapter, solar panel, power bank)
• Energy saving function
• Reactivation of deeply discharged batteries
• Time-controlled overcharge protection
• Four charging slots - can be used independently of each other
• optimised, intelligent temperature monitoring
• Housing made of flame-retardant ABS plastic
• Intelligent reverse polarity and overcharge protection
• Microprocessor-controlled charging process that protects and monitors the batteries against overcharging
• Independent recognition of the battery type (Li-Ion, Ni-MH or Ni-Cd) LiFePo4 manually connectable
• The charging method (CC, CV or dV/dt) is automatically selected according to the detected battery type.
• Charging current is adapted to the detected state of charge of the battery

Test results: www.lygteInfo.dk

Instruction manual: Nitecore-UM2.pdf

Scope of delivery: 1x NiteCore UM2, 1x USB cable, user manual in German, English, Spanish, French, Russian, Italian and Romanian
(USB power supply not included)

Further information about the UM2 charger from Nitecore.

For *Quick Charge charging mode (see "Technical specifications) a QC USB power supply is required Suitable power supplies: Art. No.: Art. No. 400617, 400622
Many newer smartphones are already supplied with QC power adapters.
Please make sure that you already have a QC power adapter before you order a new one.
For standard charging mode (see technical data), a 2.1V power adapter is sufficient. Suitable power supply units: Art. No.: 400609, 400610, 400611, 400616

*QC 2.0 (Wikipedia)

• Charging current QC Mode:        1500mA x 1 (max); 1500mA x 2 (max)
• Charging current Standard Mode:  1000mA x 1 (max); 1000mA x 2 (max)
• Input voltage: DC 5V/2A 9V/2A 18W (MAX)
• Output voltage: 4.35V ± 1% / 4.2 V ± 1 % / 3.7 V ± 1 % / 1.48 V ± 1 %
• Dimensions: 152 mm × 73 mm × 40 mm
• Weight: 148.3 g (without batteries and USB cable)
• Reverse polarity protection
• Automatic limit switch