Battery OEM BMW or OEM Subaru
The battery on my previous F20 lasted over 12 years before I replaced it last winter. Had enough voltage but bad resistance readings, mechanic advised me to change it for the winter.
I’m just over 10-years on my ‘15 M235i.
I got 12 years out of the original battery on my E90.
My e93 Battery Laster from 08 and I replaced it this year due to it started having Problems. It still kinda worked but I didnt want to have Problems. Still 17-18 years on a battery is bonkers
Changed my battery this year on my 2005 e46 coupe. There wasn’t a date for the old one, but 3 codes and for one (H1B582092) ChatGPT said that it’s 2005 battery, which just sounds insane if true.
I had 8 years on original battery on 2017 750i. I replaced it. It was barely holding 12V. Few functions were not working like stop/start and such.
I had this issue as well, one day the car wouldn’t turn over. Then it would. Then there was no power. Then it would start. Over several days and weeks this would happen. It was explained to me that the Subaru batteries that come from the factory are made to hold just barely enough power to start the car. If that power is diminished in even the slightest degree, like with normal usage in the first 50k miles, then the battery does not have enough charge to do its basic task anymore, rendering it useless. As I understood it, the batteries in the new cars are not up to snuff.
Replacing my battery recently
A new battery at 10k miles.
Battery died around 50k miles.
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