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1990C4S 1990C4S is offline
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Join Date: Sep 2009
Location: North of You
Posts: 9,160
I have a car battery that I am 99% sure is bad. When I took it for testing they said 'battery is good, just needs charging'.

I suspect if you charge it they will say 'battery is 100% charged, it's fine.

I think the issue is that the new pocket testers do not load the battery. You need the old fashioned style tester that had resistors, and you could dump a crap load of energy while monitoring the voltage and current.

Project Farm did a review of testers, they did seem to work, but I prefer to see the battery do some work under load.
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Old 08-25-2025, 05:40 AM
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