Created battery tester adapter for multimetr (i used lidl powerfix multimeter) buy any with connectors should work. It was quite fun project and i did few test to learn and create usefull and easy to asemble... For tension used rubber instead of spring.
I did extra variations with mount to multimeter terminal. (sidel_alt.stl)
And second with MMU print with front panel... (body_top_two_colors.3mf)
Use image as reference for assembly (should be quite easy :) )
You will need:
Multimetr
M5x16r screw (5x)
M2x8r screw (3x)
Rubber band
two extra probes (as conector cables)
Printed with petg (but it should work with PLA)
The author hasn't provided the model origin yet.