MJSCaddyV

Wanted to ask the group if anyone runs a better battery (lightweight, AGM or lithium) in the group 101 or 78 size? Seems like a good candidate for weight reduction but those posts aren't friendly to most any lithium battery producers out there like Braille in Sarasota FL.

ColinGreene

It’s a 3900 pound car I don’t think I’d be worried about saving a few pounds

heavymetals

iTrader: (3)

The group 101 battery designation was a FARCE perpetrated on CADILLAC owners.

The sole reason being to keep DELCO in business.

It wasn't a "better" battery as evidenced by the "infant mortality" of new battery failures in cars on the lot.

CTSM

@MJSCaddyV A month ago when I needed to replace my 5 year old EverStartMaxx Group 78 I looked all over the place.
I finally came down to the conclusion that for my money and time the best choice was the NAPA #9878 Legend Premium AGM Group 78 (the shaved top posts version, not to be confused with the other version which has top posts).



It may not be the best battery in the world or who knows the lightest, but you would be hard pressed to find many reasonable group 78 AGM options.
I got it for $200 which I think was very reasonable for such an AGM, today of course it costs more go figure.

MJSCaddyV

Great find! How was the fitment with the NAPA group 78 vs the OEM 101? I really want to get an AGM, no acid sloshing around and can handle the heat better.

CTSM

Fitment is not a problem like any group 78 it fits with no modifications, it's slightly cramped against the hood seal but doesn't prevent anything from closing. If you want AGM as I said you will not find a better option for your $ locally so go for it.