Thing for mounting Bosch 18V batteries to pegboard (1/4 inch holes on 1 inch pitch). Some jiggling is necessary to fit the mount to the pegboard, where it is held securely. Battery comes out easily from the top.

Creality

Ender 3

No

Yes

Printed with 0.4 mm nozzle. Used supports for protrusions that engage with pegboard and suppressed support for the indentation that engages with the battery.