STL files for the compact 680C, the E size case (ETX-690 or 900), and new backup battery case. Useful in planning locations for installing the battery(s) in your car/airplane build. Dimensionally accurate according to the dimensions published by EarthX but the actually 680C battery was taller than the model. Also the mounting holes for the backup battery are slightly different from the actual battery. EarthX didnt provide those dimensions so I had to guess at it