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post #1 of (permalink) Old 01-04-2001, 11:25 PM Thread Starter
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How to test a battery

I came across 4 Optima red top batterys at work that they were going to junk during a regular PM of our rig. They are about 4 months old and in good condition, really no need to have been replaced other than they are all replaced during the rigs yearly PM. How do you test a battery? When I got them home they were all reading about 12.6 volts on the multimeter, what else can I do to check them out before I put a couple in my Jeep? I talked to the mechanics at work and they said they usually trade out the old batteries to the recycler for beer, and that they would do the same for me for any that aren't too beaten up.

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post #2 of (permalink) Old 01-05-2001, 06:48 AM
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Re: How to test a battery

1. Clean the posts and battery cable connectors.
2. Put some grease on the connectors and posts.
3. Install the batteries.
4. Charge them up with the vehicle.
5. See if they hold the charge overnight and start the vehcile.
6. Go to the Auto Parts store and ask to use a Load tester.
7. Load test the battery.

If they do hold the charge, their likely good
If they don't hold the charge, thier likely bad.

That's really about all you can do. The battery voltage you're reading is a good reading.

Safe Jeepin'

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