Nitecore UM2 Smart Battery Charger

Smart power. Total control.

Not just a charger — a reliable brain for your batteries.

While others guess, this one calculates.

Auto-detects battery type, level and health — with safe, optimized charging every time.

Real-time LCD readout for current, voltage and time.

Independent dual slots give you full insight and flexibility.

Perfect for photographers, flashlights, and precision gear.

This is the charger trusted by those who can’t afford battery failure.

Others refill. Nitecore restores.

Full circuit protection and adaptive charge speed — built for pros.

Start every task with full power — and zero doubt.

UM4
Type
DC 5V/2A 9V/2A
18W (max)
Output Voltage
Output Current
Fast Charge Mode: 1500mA * 1 (max), 1500mA * 2 (max), 750mA * 4 (max)
Standard Mode: 1500mA * 1 (max), 1000mA * 2 (max), 500mA * 4 (max)
Universal Battery
IMR/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