battery reconditioning, auto battery type recognition
Security Functions
Malfunction Monitoring
yes
Temperature Control
yes
Reverse Polarity and Short-Circuit Protection
yes
Power and Charging
Input Voltage
DC 5V/2А, DC 9V/2А
Output Voltage
1.48 V, 4.2 V, 4.35 V, 3.7 V
USB output
yes
Additional Information
Display
yes
On-Screen Data Display
LCD display
Full Charge Sound Alert
none
Sliding Battery Connector
yes
Package Contents
documentation, USB cable
Dimensions and Weight
Packaged Dimensions
180x150x50 mm
Packaged Weight
340 g
Description
The NITECORE UM4 charger is suitable for charging Li-ion, Ni-MH, Ni-Cd, LiFePO4, and IMR batteries of sizes 10440, 14500, 14650, 16340 (RCR123), 16500, 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26500, 26650, 26700, AA, AAA, AAAA, C, and D. The unit features 4 battery slots with independent charging channels. Integrated protection technology prevents overheating, reverse polarity, and short circuits.
The NITECORE UM4 features sliding contacts that accommodate batteries of various sizes. An LCD display shows charging status information. If a critical temperature threshold is reached, the charging process automatically stops. The device tests battery capacity, type, and health status. It supports fast charging and battery restoration functions. The charger weighs 340 g.