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Batt showing 12.48V

bradleyheathhays

NAXJA Forum User
Location
Lexington, KY
I have an 02 Taurus and my dash battery light has come on twice in the past week. Once after a few miles of driving, seemingly random, and once when I was warming the engine up. It's been 20-30F around here lately. This second time, I started the engine in the morning at about 20 deg F. Let the idle come down to normal and after about a minute I gave a little gas to get the engine up to 1500 rpm, which is when the batt light came on. It switched back off after about 5 seconds, after I got off the gas.

After sitting for 6 hours, my old multimeter shows 12.48 V on the battery. It's one of those 2 year warranty EverStart batts from Walmart, manufactured in 3/23, so still in warranty.

Does a 12.49 resting voltage justify a warranty claim, assuming it's not the alternator that's going bad?

Thanks
 
Voltage is only one aspect of a battery test. 12.49 alone does not justify replacing the battery, definitely need a load test to be more conclusive.

If you take it to Walmart for warranty, I could almost guarantee they will do a load test.

Since you have a dvom handy, may want to at least test charging voltage.
 
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