Fenix BT
Fenix BT lights use an external battery pack separate from the light head.
BTR20
![flash mode: True](https://static.bikelightdatabase.com/lights/icons/flash.png)
![Fenix BTR20](https://static.bikelightdatabase.com/media/lights/cover/btr20.jpg.300x200_q80.jpg)
Fenix BT lights use an external battery pack separate from the light head.
The BTR20 has an external rechargeable lithium battery pack. It has a single LED with custom optics designed to produce a hybrid flood/spot beam.
BT30R
![flash mode: True](https://static.bikelightdatabase.com/lights/icons/flash.png)
![Fenix BT30R](https://static.bikelightdatabase.com/media/lights/cover/BT30R.jpg.300x200_q80.jpg)
Fenix BT lights use an external battery pack separate from the light head.
The BT30R has an external rechargeable lithium battery pack.
BT20
![flash mode: True](https://static.bikelightdatabase.com/lights/icons/flash.png)
![Fenix BT20](https://static.bikelightdatabase.com/media/lights/cover/bt20.jpg.300x200_q80.jpg)
Fenix BT lights use an external battery pack separate from the light head.
The BT20 has a single LED with a custom lens creating a dual spot/flood beam. It uses 18650 batteries in an external case. The batteries and charger are not included with the light, but some merchants offer bundles with batteries included.