Uncle Ron Posted March 31, 2015 Share Posted March 31, 2015 I just learned this trick to tell a good alkaline battery from a bad one: Hold the battery upright about 1-2 inches off a solid surface ... Drop it negative side down ... A good battery will more or less just "thud", , but a bad one will bounce several times ... Has something to do with density of the stuff inside the battery ... I had a box full of batteries and was quickly able to sort out good from bad.... Cheers, Unc 1 Quote Link to comment Share on other sites More sharing options...
LukeJ Posted March 31, 2015 Share Posted March 31, 2015 I'll have to give that a try. Thanks! Quote Link to comment Share on other sites More sharing options...
weaver hillbille Posted April 2, 2015 Share Posted April 2, 2015 (edited) Haven't heard of that. I just use a cheap(( got (3) free Harbor Freight MUltimeters)). BElow 1.1 volts, it's not long for this world.http://www.dailymail.co.uk/sciencetech/article-2743595/Want-know-battery-dead-See-BOUNCES-Engineer-reveals-simple-trick-check-cell-lost-charge.html If you can verify with a multimeter, I think you 've got a winner. The link is interesting. Maybe nothttp://www.sciencedaily.com/releases/2015/04/150401140835.htm Edited April 2, 2015 by weaver hillbille Quote Link to comment Share on other sites More sharing options...
garimpo Posted April 3, 2015 Share Posted April 3, 2015 If you drop a re-charageable battery you run the chance of if not working any more. I use a cheap radio shack battery tester. It opens up and you put the battery in between the two contacts and it tells the charge. Quote Link to comment Share on other sites More sharing options...
frank c Posted April 10, 2015 Share Posted April 10, 2015 I LIKE 9 VOLTS ACROSS THE TOUNGE !!!!!!!!!!!!GIVES ME A REAL QUICK CHARGE !!!!!!!!!!!!!! Quote Link to comment Share on other sites More sharing options...
Mike Furness Posted April 10, 2015 Share Posted April 10, 2015 Frankie I always knew you had a 'charged' personality! Mike F Quote Link to comment Share on other sites More sharing options...
homefire Posted April 10, 2015 Share Posted April 10, 2015 And here I was thinking that was what Volt Meters was for. Emmmm. Quote Link to comment Share on other sites More sharing options...
Au Seeker Posted April 10, 2015 Share Posted April 10, 2015 I have always from a young age tested 9 volts batteries using the tongue trick , it's always worked for me, as shocking as that may be!! 1 Quote Link to comment Share on other sites More sharing options...
garimpo Posted April 10, 2015 Share Posted April 10, 2015 I'm trying really hard not to say what I'm thinking! 1 Quote Link to comment Share on other sites More sharing options...
Au Seeker Posted April 10, 2015 Share Posted April 10, 2015 I'm trying really hard not to say what I'm thinking! Don, I never really liked doing the tongue test, still don't, I only resorted to doing it if I couldn't get one of my brothers to do it and later in life my kids!!! Quote Link to comment Share on other sites More sharing options...
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