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Old 07-30-2020, 12:00 AM   #17
Ailurus2SS
 
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Drives: 2016 Chevy Camaro 2SS
Join Date: Aug 2019
Location: NY
Posts: 56
Quote:
Originally Posted by ctrlz View Post
This gets a bit tricky because you need to know the battery voltage under load. Batteries do not like being left in a discharged state for too long. They lose their capacity. I am a bit suspicious of a battery at 11.3 volts being completely recharged in 30 minutes.
A battery is considered completely discharged around 11.8 volts.
Did they load test the battery?
https://shop.advanceautoparts.com/r/...-voltage-range
My SCT device was the one reading 11.3V from the ignition voltage but the dash read about 12.5 V. It was the first mark that starts the gray area on the gauge. The one at the 10:00 position. Not sure which was more accurate for the actual battery capacity, the dash or the ignition voltage reading. I'm not sure what test they ran on the battery but they only ran it for about a minute.

I plan on getting the car on a flat bed and brought to one of my mechanics tomorrow to check the alternator.

When I had this same problem a month ago, the mechanic the car was brought to when it broke down put the battery that was in the car to charge for a couple hours and still wouldn't turn over but a new battery did the trick.

Now that new battery is having the same issue, could it be the aftermarket batteries? The first one was a duralast platinum (from AutoZone) and this current one, that replacement is an autocraft platinum (from advance auto parts). Both of them had the tag H6-AGM on them
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