I decided to remix two of my favorites, pegboard hooks from pegboard stuff with the inline battery trays.  I wanted some quick access battery trays that are fast to load and unload. Easy to print, minor supports needed except for the pegboard mounts.

Update Sep 18, 2022: Removed original designs and replaced with more reinforced design. Original designs failed after 3-6 months of full load.

Feel free to tinker: 

AA: https://www.tinkercad.com/things/ecPrq73d9O9-aa-pegboard-battery-tray

AAA: https://www.tinkercad.com/things/h4AWwDFeSvV-aaa-pegboard-battery-tray

Print instructions

Printer Brand: Prusa

Printer: I3 MK3S

Rafts: No

Supports: Yes

Resolution: 0.20

Infill: 15-20%