Laser 3D printed at the Luna factory out of high quality resin
USA made spring 
protects your battery by protecting the cover
will not come off or open while riding
Requires 10 minutes installation and basic tools
Made in El  Segundo with Love

This is the best battery cap we have seen to date. It springs shut with just enough force  so it will not come loose or open even with rough riding or jumping. 

Unless you plan painting yourself we recommend you get the painted option ($3)  because the white material is not UV resistant.