Nitecore UMS4 Intelligent USB Four Slot Quick Battery Charger
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27,292 reviews
covering
60 products
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Household Battery Chargers
Experiential insights by users
About Nitecore UMS4 Intelligent USB Four Slot Quick Battery Charger
Overall Feedback:
79% positive
77% liked the high quality build, but 23% found it weak
The charger has poor build quality with super touchy contacts, requiring everything to be perfectly positioned for a good contact.
I am disappointed with the charger's build quality, despite its sturdy and nice design, as it relies on MicroSD for input.
To get the charger to work at full speed, I had to unplug and plug it back in a few times, and remove the battery then put it back in. This indicates a problem with the build quality of the charger.
I am disappointed with the build quality of the charger. It is cheap and has a micro-USB port instead of USB-C. I suggest that it could have been made 100W PD compatible and USB-C for an extra $15.
75% praised for its fast charging speed, but 25% found it slow
I used the charger with my rechargeable Amazon basic batteries and three 7V batteries. I plugged it into my USB-C adapter and USB 3.0 thunderbolt and it charged quickly.
I was initially satisfied with the charger as it charged both Li-Ion and Ni-MH batteries fast.
I can charge 4 batteries 3 times faster with the charger when plugged into the 12V auto port on my portable power station compared to the UMS4.
If you want to use it for quick charging, you need a charger that can do 12v at 1.5a, which is 18 watts.
77% appreciated its compatibility with multiple devices, although 23% found it incompatible with certain brands
I will not accept a device that requires a different charging cable, even if a cable is included. This shows my negative sentiment towards the compatibility of the device.
I am disappointed with the micro USB connection at the charger to a USB-A connection, which is not compatible with my other cables.
76% found it easy to operate, but 24% had difficulties
Each slot is independent, so I can mix and match battery types. The display cycles through multiple screens for each slot, but two buttons allow me to rotate to a particular slot and screen quickly.
The charger requires an external power supply, such as a power brick used for charging phones or tablets, and comes with a micro USB cable.
88% liked the built-in safety features, while 12% experienced issues with faulty charging
I did not mention any specific safety features of the charger.
I have noticed that Ni-MH batteries tend to get hot after charging, especially AAAs.
