This is an enclosure for the Heltec Tracker, takes a 3.7v 1350mAh Battery (appx 3.8mmx6mm).
Two heights are included - a short one for out of the box use and a tall one incase you added pinheaders so you can hook up additional telemetry and sensors. With the latter there is plenty of room in the case to add your circuitry
The author marked this model as their own original creation.