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Battery date coding

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Old Jan 27, 2016 | 07:11 PM
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Default Battery date coding

Just bought a 2012 c6 and am trying to determine how old the battery is. Anybody know how to determine the age. 85H7YR is on the top. Is that a date code? Thanks in advance for any help.
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Old Jan 27, 2016 | 08:13 PM
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Here is what I found about codes on AC Delco batteries.
The warranty date code is located on the top label of the battery. The first character is either a P or S. The next two digits determine the month, the third digit is year and the fourth digit indicates the manufacturing plant. For example, P 098N means the battery was made in September 2008.
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Old Jan 27, 2016 | 08:17 PM
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Goggle that code with battery date codes and you will get a ton of info about how different manufacturers code their batteries.
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Old Jan 27, 2016 | 08:41 PM
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Originally Posted by okie08vette
Here is what I found about codes on AC Delco batteries.
The warranty date code is located on the top label of the battery. The first character is either a P or S. The next two digits determine the month, the third digit is year and the fourth digit indicates the manufacturing plant. For example, P 098N means the battery was made in September 2008.
Thanks for the info. I did figure out that 85H7YR is a part number not a date code. I could not find a date code anywhere. Maybe the label with the date code fell off. Thanks for the help
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Old Jan 28, 2016 | 02:04 AM
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Some batteries have a separate sticker with the date hole punched on it ... the bad thing is these stickers come dislodged quite easily ... especially if they are hit with some engine dressing .
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Old Jan 28, 2016 | 05:35 AM
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Originally Posted by 88redconvert
Just bought a 2012 c6 and am trying to determine how old the battery is. Anybody know how to determine the age. 85H7YR is on the top. Is that a date code? Thanks in advance for any help.
Have the battery load tested. If it passes, who cares how old it is as long as it works well.
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Old Jan 28, 2016 | 05:50 AM
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When in doubt,throw it out!!!

My "rule of thumb"
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Old Jan 28, 2016 | 07:40 AM
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If the vehicle is a 2012 and the battery is original, that would put it at 3 year old at best. Without knowing the history, or you might, I would keep an eye on it.
Our cars are notorious for 'battery' issues.
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Old Jan 28, 2016 | 08:26 AM
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Originally Posted by vcheng
Have the battery load tested. If it passes, who cares how old it is as long as it works well.
My battery is 9.1 years old. I will replace when it dies...
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Old Jan 29, 2016 | 12:12 AM
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Originally Posted by jimmie jam
My battery is 9.1 years old. I will replace when it dies...
Hope it does not fail when you are out in the middle of nowhere. 9 years old it deserves a rest retire it.
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