Uncle Ron 1,492 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 post Share on other sites
LukeJ 2,160 Posted March 31, 2015 Share Posted March 31, 2015 I'll have to give that a try. Thanks! Quote Link to post Share on other sites
weaver hillbille 488 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 post Share on other sites
garimpo 2,301 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 post Share on other sites
frank c 969 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 post Share on other sites
Mike Furness 1,522 Posted April 10, 2015 Share Posted April 10, 2015 Frankie I always knew you had a 'charged' personality! Mike F Quote Link to post Share on other sites
homefire 2,581 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 post Share on other sites
Au Seeker 3,191 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 post Share on other sites
garimpo 2,301 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 post Share on other sites
Au Seeker 3,191 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 post Share on other sites
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