Quick Battery Tester

[bucko170]

I recall seeing a tip on this forum for making a quick battery tester for LED modules using silver epoxy and clips, can't find the thread though - can someone point me in the right direction.
Thanks.

[azimuth_pl]

I also can not find it.
but maybe this would be something for you:

[retroleds]

Alternate picture.


Red is positive, black is negative, 3 volts between the two.
Common plate of the two is positive 1.5 volts.

For most modules you need the third lead for the 1.5 volts which is used to trigger the command, i.e. touch to the button contacts to simulate pressing a button. A better(IMO) solution for everyday quick testing of modules - keep an eye out for a back that uses two springs, put two batteries in the module, put the springs against the batteries and flip the whole package down on your bench - at that point, touching a metal object to the caseback and one of the contacts is the same as a button touching it. Of course, you can also make a board with two springs sticking up that you connect your battery pack to...any number of ways to do this. Checking most modules with a battery pack is a bit cumbersome and frequnetly leads to various damage....like all the P4s that have broken connections from people pulling on the battery contacts whilst attaching clips. The "springs protruding from board" method is infinately safer for those, imo.

[bucko170]

They are just what I was thinking off - Thank you very much!!!