Nitecore UM20 Review

Nitecore UM20 Review

Nitecore UM20 Charger

Battery chargers have come a long way over the last few years and the Nitecore UM20 is like something designed for the space age. It’s futuristic black and yellow design and digital display make this product look as striking as some of its functions. It is a high end battery charger, but more than that it is a USB management (UM) and charging system. This means it can be used for USB data transfer as well as an intelligent battery charging system.


  • USB port for versatility
  • LCD display
  • USB output charging
  • Integrated intelligent power management
  • Priority Mode for either battery or USB charging
  • Data transfer via USB
  • Optimized charging program for IMR batteries
  • Rear USB cable winder
  • Fire retardant
  • Reverse polarity protection

The Nitecore UM20 is a lot more than a simple battery charger. It has been built making full use of intelligent technology that will not only detect the input power of the device, but also allow for intelligent management of power and distributes the charging power to where it’s needed most. It has an optimized charging program for IMR batteries and intelligently selects the charging current based on the battery capacity.

The LCD display is your control status panel and displays how much charge your battery has and displays this in percentages, giving you full control at all times. When the battery is fully charged it will cut the charging itself so you do not have to worry about over charging your batteries.

The Nitecore UM20 is a dual channel charger, which means you can charge two batteries and a phone without having to swap cables. It has a switch built into the device which allows you to switch between batteries or phone so that you can assign which one you want to have priority in charging. This is a very useful function and very thoughtful of the guys over at Nitecore.

We have stocked Nitecore products for a while now and have always been impressed by the quality and functionality of their products. They are one of the best manufacturers of battery chargers in the market and the UM20 is a great example of the kind of attention to detail they fuse in to all of their products.


The Nitecore UM20 is extremely versatile and is compatible with 18650, 18490, 18350, 17670, 17500, 16340(RCR123), 14500 and 10440 type batteries and is capable of charging both Li-ion and IMR batteries

In summary the Nitecore UM20 is a great little charge that is highly versatile and doubles up as a phone charger and a USB data transfer device. We have it on our website for £16.99 so it comes at a fantastic price. The sturdy fire retardant build makes this charger excellent value for money and a highly recommended battery charger.

As always if you have any comments or feedback regarding the Nitecore UM20 we would love to hear it. Simply drop us a line in the comments box below.

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