This is replacement for usb connector rubber cap for Nolan N-Com B5 intercom.
Important parameters:
1) print with TPU (or other flex)
2) 0.4 line width and 0.2 layer height. All sizes designed for this values.
3) 4 bottoms, 3 top, 3 walls - this will make it completely solid.
To replace cap, unscrew antenna (two screws), open device box (carefully!) then disconnect antenna cable from board (with small plastic tool, don't use metal tools). Replace cap and assembly device. You may want to replace battery as well. Original battery size is 50.45 x 34.2 x 5.2mm, this is type 053448. But I think there is enough space for 50х34х6mm battery, which is size 603450 and have more capacity. Make sure that batter comes with protection board.
I added source files, so You may change it for Your needs.

Creality

Ender 3 Pro

No

No

0.2mm

No

0.4 line width and 0.2 layer height.
4 bottoms, 3 top, 3 walls