The file 'Battery Tester 3D Printer Model' is (stl) file type, size is 511.7KB.
The module used can only display 4v to 30v, and this won't work on ordinary 1.5v batteries.
Theres allocation for 6mm spring to push the probes, ring terminal is also optional just expose the wires at the tip.
back.stl | 366.4KB | |
front.stl | 382.1KB | |
left.stl | 405.1KB | |
right.stl | 406.8KB |