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02-21-2023, 07:11 PM | #1 | |
AF Regular
Join Date: Apr 2016
Location: McPherson
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90 miata battery overheating
90 miata been sitting 4 years. We got her up and running but still having some problems.
We tried charging the old battery (build date 6/18) it took a charge and AZ says tested ok My problem is after driving the car five minutes the battery is hot (170f). I thought maybe over charging so I pulled out the good olvolt meter and this is what I know. Not started- 12.09v (yes not standard 12.6v so it's a little low) Running 800rpm no real load-12.8-12.9v Running headlights on-13.2-13.5v (1200rpm- 13.6v) Over all it seems to charge fine. So what else is making my battery hot? I've never messed with these AGM batteries |
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02-26-2023, 04:09 PM | #2 | |
AF Regular
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Join Date: Apr 2016
Location: McPherson
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Re: 90 miata battery overheating
Well I replaced the battery. All seems to be going well.
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