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 How to test your small batteries

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T O P I C    R E V I E W
B112 Posted - 07/20/2014 : 12:11:47
I was tired of throwing out or using bad batteries. Needed to diagnose a device. You simply put a 100 ohm resister across the volt meter and read the voltage your batteries put out. I found two or three batteries in our bad battery box (to be recycled) that were good with this test. Other than that I needed to test why a sprinkler wasn't working and it told me I put a bad battery in thinking it was good.

Here's a video on how to test batteries with an ohm meter.

https://www.youtube.com/watch?v=HcikzMG7mMU

Hope you find it useful!
Michael

P.S. Cleaning my garage today and trying to get back to some fun projects.
6   L A T E S T    R E P L I E S    (Newest First)
B112 Posted - 07/27/2014 : 07:24:37
You know this battery test with 100 ohms was for the regular batteries. I wonder if the load is correct for a Nicad battery. I'll need to look into that.
Cvans Posted - 07/24/2014 : 21:18:30
I'm glad you weren't hurt but it would have been interesting to see how you handled that situation while trying to get your pocket emptied.
skunkhome Posted - 07/24/2014 : 20:37:43
I noticed years ago when we were buying "batteries" by the case that rechargeable batteries only delivered 1.2 volts but at a much higher rate mA. When the kids were racing battery powered track cars those cars with nicads would smoke the cars with alkaline batteries but would slow down sharply after a few laps while the alkaline powered cars just kept plodding along. I dropped what I thought was a spent ni-cad in my pocket and some how shorted it out with my keys. It instantly lit me up, burned a hole in the bottom of my pocket and welded two keys together.
B112 Posted - 07/24/2014 : 07:59:11
I love the shockingly easy quote too! Yeah I didn't know why and that's why I looked it up. With kids these days, we go through load of batteries.
Cvans Posted - 07/22/2014 : 17:30:32
quote:
It's shockingly easy.

skunkhome Posted - 07/20/2014 : 14:23:06
We have a nifty little tester they works great for all the standard sizes. A 9v will tell you in a jiff whether or not it's good if you stick it to your tongue. It's shockingly easy.


Thanks for sharing as I knew the multimeter did not work. Now I know why.

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