Nitecore UMS2 Dual Slot USB Smart Battery Charger for Li-on/Ni-MH/Ni-Cd/IMR 16340 14500 18650 21700 20700 AA AAA and Other Batteries with Battery Organizer

Nitecore UMS2 Dual Slot USB Smart Battery Charger for Li-on/Ni-MH/Ni-Cd/IMR 16340 14500 18650 21700 20700 AA AAA and Other Batteries with Battery Organizer

Q: My ums2 keeps going into reboot loop when at times inserting a 18650 battery; tried 2 brands of batteries; multiple usb cables; defective?

Have you tried a more powerful (output) USB adapter? If the issue persists, contact us (the seller) and we will have the issue resolved swiftly.

Q: Will this unit charge a protected 21700 battery? I know it will accept the unprotected battery.

Yes. It can charge both protected and unprotected 21700 battery.

Q: Does this unit have a discharge function?

No, it does not have a discharge function.

Q: Does it test for battery capacity?

No. It does not display the capacity of the battery.

Product ID: 740204718

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Details

Brand
Nitecore
Colour
Black
Item weight
5.56 Ounces
Output voltage
4.35 Volts
Specification met
CE

⚡4000mA max dual-slot fast charge

📊Real-time LCD battery status

🔋Universal multi-chemistry & size support

Frequently Bought Together

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Description

🔌 Charge smarter, stay powered longer — never miss a beat!

SMART SCREEN INSIGHT - Dynamic LCD display keeps you informed with real-time battery health and charging progress.
ADAPTIVE INTELLIGENCE - Automatically optimizes current and voltage to maximize battery lifespan and safety.
TURBOCHARGE YOUR POWER - Up to 4000mA total output for lightning-fast dual battery charging.
UNIVERSAL COMPATIBILITY - Supports Li-ion, Ni-MH, Ni-Cd, IMR, and multiple battery sizes from AAA to 21700.
TRAVEL READY ORGANIZATION - Includes a sleek LumenTac battery organizer to keep your power essentials perfectly sorted on the go.

The Nitecore UMS2 is a dual-slot USB smart charger delivering up to 4000mA total output with intelligent current and voltage management. Featuring a clear LCD display, it supports a wide range of battery chemistries and sizes, including Li-ion, Ni-MH, Ni-Cd, and IMR. Perfectly paired with the included LumenTac organizer, it’s designed for efficient, safe charging whether at home or on the move.