This is a nearly drop in replacement battery shell for an external Rad Power Bikes battery pack. Or, Hailong, same thing essentially. Depending on what type of pins you use for interfacing with the bike frame mount, you might need to add some clearance. I'd honestly recommend bringing these into CAD and making it a better fit for your specific situation.

I this printed on my CR-6 max. This is a big print, that may need to be split into smaller parts depending on your printer. I printed with a 0.6mm nozzle because it is so big. Also, it is a battery shell, so, use a higher temp material.