Nitecore NITECORE UMS2 Intelligent USB Dual-Slot Superb Battery Charger and LumenTac 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.

4.4/5

Product ID: 393314987

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Details

Brand
Nitecore
Colour
Black
Product Dimensions
7.3D x 15.2W x
Item Weight
5.56 Ounces
Output Voltage
5 Volts 4.2

⚡4000mA max dual-slot fast charge

📊Real-time LCD battery health & status

🔋Supports 20+ battery types & sizes

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Description

🔌 Power up smarter, faster, everywhere you go!

SMART SAFE CHARGING - Intelligent tech auto-adjusts current and voltage to maximize battery lifespan and safety.
TURBOCHARGE YOUR POWER - Delivers up to 4000mA total output for lightning-fast dual-slot charging with QC2.0+ compatibility.
STAY INFORMED INSTANTLY - Bright LCD display shows real-time battery health, charging status, and mode for total control.
TRAVEL READY ORGANIZATION - Includes a sleek LumenTac battery organizer to keep your power essentials perfectly sorted on the go.
UNIVERSAL BATTERY COMPATIBILITY - Works seamlessly with Li-ion, IMR, LiFePO4, Ni-MH, Ni-Cd batteries in multiple sizes including 18650 and AA.

The NITECORE UMS2 is a cutting-edge dual-slot USB battery charger delivering up to 4000mA total output with Quick Charge support. Featuring a clear LCD display for real-time battery health and charging info, it intelligently adjusts current and voltage to protect and extend battery life. Compatible with over 20 battery types and sizes, it’s the ultimate fast, safe, and versatile charger bundled with a compact organizer—perfect for professionals who demand reliable power anytime, anywhere.