Nitecore UI1 Single-Slot Intelligent Lithium-ion Battery USB Charger for 18650, 18350, 20700, 21700, 16340, 14500 and More, and Organizer

Simple and works well

Good brand and quality product.

I keep a phone charger, small power cell, cables, and a couple extra 18650 batteries in my work bag. I've wanted to have a charger instead of having to plug in my lights (headlamp and one in my pocket) but couldn't find a small one until I saw this. I didn't need a dual battery charger for this and those were more than twice the size so would take up unnecessary space. This was perfect for my use.

This charger is easy to use and small enough to take anywhere. Drawbacks include the micro-USB connector and its relatively cheap feel. I wish it were USB-C. Other than those issues, it has worked on a variety of rechargeable batteries.

Unit is as described. Charges one battery at atime.

This charger works perfectly to recharge my Nitecore flashlight battery. It charges fast and is easy to bring along with me if needed. It also comes with a small case to hold extra batteries.

It appears to be a good battery charger.

I use this to charge the batteries for my nitecore e4k flashlight so I always have a fully charged battery to start the work week, it works great.