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Old Aug 3, 2025 | 08:16 PM
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Hi all time to replace the battery i went to amazon web site and put in the delco 88864541-48-agm 36 mo and they say it doesnt fit is it because i have the wrong numbers or that it is a agm type ? If the numbers are wrong would some-one have the correct ones?
thx
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Old Aug 3, 2025 | 08:50 PM
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Search for a Group 48. That defines the size and post locations. The OEM battery is rated at 660 CCA.
I installed a Duracell AGM Group 48 two years ago rated 760 CCA and have had no issues. The car definitely cranks a lot better.

Ron
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Old Aug 4, 2025 | 04:46 AM
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Originally Posted by ball-z
Hi all time to replace the battery i went to amazon web site and put in the delco 88864541-48-agm 36 mo and they say it doesnt fit is it because i have the wrong numbers or that it is a agm type ? If the numbers are wrong would some-one have the correct ones?
thx
That's the correct number for GM's 760 CCA AGM batteriy that fits our cars.
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Old Aug 4, 2025 | 07:26 AM
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group 48 interstate agm battery fits fine has a handle and costs about 250$
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Old Aug 4, 2025 | 11:45 PM
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Originally Posted by ball-z
Hi all time to replace the battery i went to amazon web site and put in the delco 88864541-48-agm 36 mo and they say it doesnt fit is it because i have the wrong numbers or that it is a agm type ? If the numbers are wrong would some-one have the correct ones?
thx
Amazon searches have a lot of mistakes.
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Old Aug 5, 2025 | 08:25 AM
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This is the one I bought.

https://parts.gmparts.com/product/ac...Id=1&year=2015
.
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Old Aug 5, 2025 | 02:30 PM
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Originally Posted by RonC7
Search for a Group 48. That defines the size and post locations. The OEM battery is rated at 660 CCA.
I installed a Duracell AGM Group 48 two years ago rated 760 CCA and have had no issues. The car definitely cranks a lot better.

Ron
Will the stock battery tender work properly with an AGM battery? I've seen some youtube videos that caution against it.
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Old Aug 5, 2025 | 02:53 PM
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Originally Posted by mikeyg
Will the stock battery tender work properly with an AGM battery? I've seen some youtube videos that caution against it.
If the instructions don't specify, I would get one that does for sure. I just had to do that with my motorcycle.
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Old Aug 5, 2025 | 04:32 PM
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noco agm tender 50$
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Old Aug 5, 2025 | 07:19 PM
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thank you all for your replies gonna go with the delco 48 agm
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Old Aug 5, 2025 | 09:26 PM
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Just look on the manufacturer web site for that model's instructions and see if it is acceptable for AGM. Or email support@ctek.com and ask them - just give them the model number off your maintainer.

Most new maintainers should support AGM - but check the package or instructions to be sure.

Ron
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Old Aug 5, 2025 | 10:28 PM
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My GM CTEK seems to work fine with my AGM.
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Old Aug 6, 2025 | 01:57 PM
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Originally Posted by mikeyg
Will the stock battery tender work properly with an AGM battery? I've seen some youtube videos that caution against it.
Yes. Like many things on the Internet, YT is far from authoritative.

Originally Posted by ICONIC7
If the instructions don't specify, I would get one that does for sure. I just had to do that with my motorcycle.
Good advide. Thankfully, the instructions DO specify. According to page 9 of the US 3300 Corvette Model 1051 Battery Charger User's Manual, it's suitable for charging "All type of lead-acid batteries. (WET, MF, AGM, Ca/Ca)"


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