Fenix ALF-18 Battery Adapter 18650 to 21700

The Fenix ALF-18 Battery Adapter allows you to use an 18650 battery in flashlights designed to use a 21700 battery. Simply place the 18650 battery in the holder and insert both into the flashlight that operates with a 21700 battery.

Made with copper contacts, it provides excellent conductivity performance. Compatible with flat top 18650 batteries.