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FWIW-My Bosch battery lasted less than a year and a half. I store my car for 6 months/year with the battery - disconnected.
One day I left my parking lights on all night, drained the battery and would not hold a new charge. Switched to an Interstate battery then.
I have not looked back for the last 4 years.
FWIW #2, I purchased a Legend BAT7591 at NAPA and it fits perfectly. 700 CCA, 860 CA, BCI 91. I went with this one because I have a Legend in my Jeep that has lasted well, and because NAPA, at least the one near me, gives a 30% discount on batteries every other Saturday, and to boot the Legend batteries purchased there in Jan-Feb 25 also have a $20 rebate.
FWIW #2, I purchased a Legend BAT7591 at NAPA and it fits perfectly. 700 CCA, 860 CA, BCI 91. I went with this one because I have a Legend in my Jeep that has lasted well, and because NAPA, at least the one near me, gives a 30% discount on batteries every other Saturday, and to boot the Legend batteries purchased there in Jan-Feb 25 also have a $20 rebate.
Take a quick look at the fine print on your battery. I wouldn’t surprise me one bit if East Penn didn’t make that battery for NAPA. If it’s “Made in USA” it’s almost guaranteed.
After comparing pictures, I’m nearly positive. Good to know in the future, although I have to admit I’m less than impressed with the local NAPA counter help.
Last edited by dlearl476; Feb 22, 2025 at 08:53 PM.
I replaced my battery in my 93. Thought I'd add to this excellent thread to help limit fragmented information (multiple same topic threads) and to help searches on the forum.
I purchased the RC-91PRM Super Start Premium from O'Reilly (because of price and proximity to me). It fits perfect and is the same size as the Interstate MT-40R (which only has 590 CCA) that the PO installed. It has the same case design as the Deka battery @dlearl476 mentioned above, but this battery is marked as made in Romania.
RC-91PRM installed
RC-91PRM SPECS
Group size: 91(BCI)/T6 (DIN)
700 CCA
800 CA
ADDITIONAL INFO
The Interstate MT-91/T6 product page now states that it has 600 CCA. It is also the only battery that is listed for a 968 on the Interstate site.
East Penn/Deka for me on all my cars. For my 968 I have their 691MF, T6, 70 CCA. Fits like a glove. Last one was good for 10 years …finally replaced it a year ago. Always on a CTEK charger. I live in Northern NJ so easy for me to find here.
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