Owner reviews for battery

I put in a Varta CP1254 A3, same form factor, similar enough specs.

UPDATE: I put in the bigger battery, it's great. The Cp1254 A4 gets me 1-2 hours extra use over the A3 and I believe even the original Z55H.

Being designed for industry they have a reputation for much longer life (up to 10 years) and better performance at cold temperatures.

The other one (duralast one) has a better cca and will perform better in the winter months.

Duracell flooded lead acid would be a good choice and around $200.

It’s a battery. It doesn’t make a difference. Find an ACDelco one. They usually last the longest for the best price.

I bought Duracell from Sams club. relatively easy coding with OBD11

I put an Optima Yellow Top battery into my 2018 OB 3.6R because the CCAs of the stock battery were pitiful (490 vs 720). Maybe check out other brands aside from Duralast? Also, get something that’s way beefier than the stock battery, especially if you live in hot or cold climates.

My 2019 M3 with 50K miles says 288 miles today (310 original) but it has been far lower at times (255 miles) and bounces around.

20 years ago optima was good. Now its 300 dollars for a 50 dollar battery. Used to get them super cheap as a jci employee and they would last made in Colorado but the quality control has been gone for decades.

Yes it's overkill if you don't need it. Standard batteries are perfectly fine for 99% of use cases