Did the Wrangler and Cherokee have an AGM? Around 4 years is the absolute minimum I've seen people getting out of the AGMs in the GC (unless another issue such as alternator of course), with 5-6 seemingly typically being when it starts showing signs it's on the way out.
Wrangler was just a heavy duty (900CCA), the Cherokee with the stop/start was 850CCA glass mat AGM. I guess that's why it was replaced under warranty. They were under the bonnet and got way too hot.
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Cheers, Dave :)
2010 JK, then a 2015 KL Trailhawk, now a 2017 GC Trailhawk!
I am still on original battery MY12, so just over 10 years.. no sign of slowing down or anything yet.
I do run dual batteries so that takes a little pressure off the main battery, but it isn't setup to start off the second battery.. Although if something goes wrong I can jump start from the second battery through the isolater,
replaced my late 2013 my14 original battery last year but it was still going strong
when i changed it out of precaution.
The replacement was a Century agm which only has a 3 year warranty.
Just shows you they can build a good battery if they really want to.
Somone told me the originals were made by Panasonic Japan ?
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