This is what happens when you hybrid a DDR ram socket and a battery holder.
Ends clip in when battery is inserted, separating the end clips ejects the battery.
It uses 8mm magnets to help latch the terminals to the battery.
If you dont have magnets you CAN add an elastic to the tabs, you might not need anything.
No special pieces are needed, the hinge is made with 1.75mm filament.
Battery will not connect if its inserted backwards.
Mounting holes are 20mm apart, designed for M3 screws.
Please print + clip in red, - clip in black, and body in something else :)

Prusa

Prusa Mk2

No

No

0.3

30%