Return to Nitecore UMS4 USB Four-Slot USB Fast Charger, for 18650, 21700 Batteries
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5 of 5 I nice upgrade to my 4 X Charger February 24, 2024
Reviewer: Kevin Watson from Houston, TX United States  
The UMS4 is intuitive and easy to read. An excellent 4 X charger. Well done!

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5 of 5 Thanks 🙏🏼 Nitecore February 14, 2024
Reviewer: Bryan Calix-Mairena from Leesburg, FL United States  
Awesome charger!

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5 of 5 Fits 21700 easily January 25, 2024
Reviewer: Luigi Sgueglia from schenectady, NY United States  
Great charger from a great company needed an upgrade from my D4 I’ve had for over 10 years to fit 21700 batteries this new charger doesn’t disappoint

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5 of 5 Great experience! January 20, 2024
Reviewer: Christopher A from Apopka, FL United States  
I bought 4 batteries for the AIO mini strobes. It was very easy not only to find the right batteries, but the website told me that a newer version was being sold. The UMS4 charger I bought for them is amazing!

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5 of 5 UMS4 Fast Charger January 16, 2024
Reviewer: Jerry Robbins from fort necessity, LA United States  
So far so good. The charger works great.

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5 of 5 Great chargers….now I have 2! December 6, 2023
Reviewer: Mark C from Shasta Lake, CA United States  
I had one of these I ordered a while back. One day it disappeared, and my wife swore she hadn’t touched it. I looked everywhere and could locate it. So I ordered another one…..then found the original a week later! She had “put it away”, our little inside joke whenever something in our house disappears LOL.
Anyway, these chargers are pretty nice. I have several Nitecore flashlights and a headlight or two, so this charger (chargerS now!) come in handy for keeping all my batteries ready to go.

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4 of 5 IMPRESSIVE December 3, 2023
Reviewer: David Allen Rivera from Millersburg, PA United States  
I had another brand, that I never even used that much, but the display went bad. I had an older non-digital display Nitecore model, which lasted a long-time, but the insulation came off the wiring at the joint, and I believe the wiring began separating and I wasn't getting uniform charging. But I got my money's worth, and felt confident enough in the brand name to try another one. I've used it once, it works well. It is sturdy and well-made, and I'm optimistic on it's long-term operation.

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1 of 5 November 30, 2023
Reviewer: James Perkins from Reno, NV United States  
I purchased 2 of these units. One seems to work fine the other is not functioning correctly. It does not charge all the way just blinks continuously,

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5 of 5 Battery charger October 9, 2023
Reviewer: Scott C  
I have about 8 nitcore flashlights and they are great.  I just update 2 new one with the larger 500 battery, so also needed to buy a new charger that the larger batteries fit in.

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5 of 5 October 2, 2023
Reviewer: Mack Sanders from Roanoke, TX United States  


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