Just bought a nitecore um20 usb charger. I had heard they were smaller, and leaving on a trip in a month, I wanted something more portable than my Nitecore D2.
Pleasantly surprised how nice this little usb charger is. It won't fit a 26650, but I don't travel with one of those anyway.
It displays a percentage of battery charged vs the voltage like the D2. It seems to take longer to charge a set of 18650s as well. But the portability can't be denied.
Here's a pict with the size difference.

Pleasantly surprised how nice this little usb charger is. It won't fit a 26650, but I don't travel with one of those anyway.
It displays a percentage of battery charged vs the voltage like the D2. It seems to take longer to charge a set of 18650s as well. But the portability can't be denied.
Here's a pict with the size difference.
