Battery OEM BMW or Duralast

I had a battery in a 93 BMW last forever like that

Regardless, while that’s sorta old for a battery, I have OEM BMW batteries going on 12 years with 89% charge capacity.

I replaced mine in my 2018 GLE63s with an aftermarket one from Auto Zone (Duralast Platinum). I finally got my start/stop feature back which I had forgotten about and also forgotten how annoying it was to have it ????

I did just replace the battery in the Trans Am in the fall after 15 years (bought when I picked the car up - I really got my money's worth on that Duralast). It had never been on a tender and that car sees maybe 1500 miles in a big year. But of course it also has virtually zero parasitic drain. I didn't even realize how weak it was progressively getting until I had a no start moving it out of the garage for a wash. It started so much easier on the new batt, I was actually laughing.

These were very very well made batteries. They also used to be insanely expensive. Now, BMW knows the game and offers a 2 year warranty, which is pretty low for batteries, but they are very competitively priced.

My 2021 45e usually gets 30-34 in mild southern US weather per charge.

I drive a 2016 f15 x5 40e. After 7 years i still do the same distance full electric, maybe 2-3km less but can be my driving style

I have been driving a 2022 330e since March 2022 and haven’t seen any battery degradation to date. In the NY winter I still get at least 20 miles on a full charge, in the summer 23-30.

Ich fahre im Moment nen BMW i3 von 2015 mit nur rund 15 kWh Batteriekapazität und knapp 80k km runter. Da die eh so klein ist und das Auto auch kein großartiges Lademanagement hat, knall ich (und wahrscheinlich alle Vorbesitzer auch) die Batterie eigentlich so gut wie immer auf 100%, was man ja eigentlich vermeiden soll. Das Auto liegt über den Daumen gepeilt ca. 10-15% (eher 10) unter den Angaben, die man so im Netz findet.

we see many 2 year old Duralast batteries that have failed.