I travel a lot with a half dozen Fenix products. The larger diameter batteries won't fit the chargers in my ditty bag. They do fit this unit and it charges them perfectly. A plus is we can use it as a power source to charge a cell phone when away from mains power. Fenix makes quality products that work as hard as I do.

The charger did not function at all. The red light turned on then shut off, as indicated in the instructions. The battery never charged.

It’s simple. It’s does its job. I’m happy.

Very convenient charger that works well for 21700 batteries as well as 26650. Now all my bases are covered! Good price and shipping was fast.

easy to use and monitor for backup battery

Good things come in small packages. This no frills charger does what it says and can double at a 7.5W power bank for your phone (USB-A plug required).