XJ ( X351 ) 2009 - Onwards

Bosch AGM Battery

Old 01-04-2019, 08:25 PM
Stuart S's Avatar
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Default Bosch AGM Battery

I decided to replace my original primary battery, even though I've kept it on a CTEK maintainer and it hasn't given me any electrical gremlins or problems starting.

So, why replace it? My 2013 XJ was manufactured in September 2012. Since that battery is now over 6 year old, who knows how much longer it'll last? The Pep Boys auto parts store near me had an ad for the Bosch AGM battery. The regular price is $219.99, and it's on sale now for $175.99 plus tax, installed with a 4-year replacement (non-prorated) warranty. It took less than 30 minutes. They also have a similar Champion AGM battery for about $20 less, but didn't have it in stock.

I had to reset the clock, but all the other memories appear to be OK. When I drove it, the first thing I noticed was that the Stop-Start system worked much better. I suspect that, due to its age, my original battery didn't hold a sufficiently high charge to always activate the Stop-Start.

Out of curiosity, I hooked up the new Bosch AGM to my CTEK MUS4.3 battery maintainer. As I suspected, it wasn't fully charged even though it is brand new. When I plugged it in, the CTEK lit up to Stage 3 and stopped there, with Stage 7 being fully charged. Obviously, it sat on Pep Boys' shelf for a while without being charged. I'm sure it'll be at Stage 7 tomorrow morning.

So, if you're thinking about replacing your battery, check out the sale at Pep Boys.
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