My personal "battery longevity" record!

I bought an older Buick Regal back in 2012, was a '95 with the Series 1 L27. Seen it on the side of the road with a sign, so I stopped and the car was in near mint condition. Talking to the gentleman he said the car was his mothers, who pasted away about 2 years prior and they where going threw a lot so they didn't know what to do. They just put the car and everything she owned in storage for a few years till they could get situated.

It was the classic 1 owner elderly couple vehicle, 93k miles and the battery on this car was 2 years old when I bought it. Car really didn't have any issues besides the multi-function switch, but the price was right. I honestly have a thing for these cars, I don't know why I just love their reliability, cheap parts, and they can be found anywhere. So I bought it and over the next decade I only put 30k miles on it, battery was still the same when I bought it, had to be at least 12 years old.

I ended up parting with it because a younger gentleman kept asking me if I would be interested in selling it. I kinda felt for the kid probably his first vehicle and it was just sitting in my drive way except for the occasional one a month drive I gave it to the store. I let him have it for cheap, which looking back I shouldn't have. I ended up having another gentleman a few months later contact me asking about information on the car. That he bought it not running and I was the last known owner, wanted to know what was original, and if the motor had been replaced.

That he never seen a motor this destroyed and wanted to know if I swapped out the motor in it before selling it. Told the gentleman I sold the vehicle to someone in their late teens and it ran perfectly fine when I parted with it. We talked back and forth over the coming months just answering questions. They ended up putting a different motor in it, only to find out the transmission was shot as well.

Anyways yeah this battery was all of 12 years old, was a generic walmart battery at that, and I still don't understand how some folks can destroy a perfectly running vehicle in only 2-3 months.
 
Is the battery located outside of the engine bay? Many BMWs have the battery in the trunk/rear of the vehicle. I get much longer life out of them than my vehicles that have the battery in engine bay.
Yes. Trunk bcs. weight management. However, I got 9yrs out of VW battery that is located under the hood and VW engine runs like oven.
Generally, European vehicles have really good batteries, but 14yrs? Take into consideration that BMW electrical system is really taxing. If battery gets weak, al kind of issues start to pop out, warning light etc. I am still not there.
 
Another experience at dealership.
They come and say I am missing “high beam assist bulbs.” They H3. Apprentle light assembly (HiD) has slits but no bulbs and VIN does not show that option. Whatever. I will put them in. H3 bulbs at BMW dealership are $10 a piece. I am thinking they must be $5 in Auto Zone etc. Nope, $17! I guess back to BMW dealership to save some money 😂
 
I took BMW yesterday to the dealership for a VANOS adjustment bolts recall. The recall is from last year, but upgraded parts just became available.
I told them to check battery as it seems it kind of slowed down this past winter. If I left the car in the garage and did not start it few days, it would crank slower at temperatures below 30f.
Anyway, I got this car in December 2019 and I assumed the battery was changed at one point, as the car was built 04/in 2010.
Nope, still the original battery in! It is running two aftermarket amplifiers too, last 4 1/2 yrs.
They did say I might want to change the battery before winter, which I will, with the BMW OE one, of course!
I would change it when it fails a load test. And just because you buy a BMW battery does not mean it will be manufactured by the same company your original one was.
 
I would change it when it fails a load test. And just because you buy a BMW battery does not mean it will be manufactured by the same company your original one was.
Generally theirs are really good, but yes, that is especially possible after COVID. Still difference is $50 or something between Auto Zome and dealership and I have 15% discount in dealership.
 
I don't want to jinx myself but the original battery is still in my 2016 JK Rubicon. I read those batteries sucked, I'm sure I will be replacing it soon, but I can say it served me well when it happens.
 
Not sure, battery still works like a clock. Didn’t change it.
BMW has IBS (intelligent battery system) where ECU adjusts charging to preserve components as battery ages. That is why when changing battery, you have to “register “ it with car. Basically, tell car that you put new battery so that IBS gets adjusted.
That might have saved you. Alternators do not like old batteries. It causes them to overheat and eventually short out.
 
That might have saved you. Alternators do not like old batteries. It causes them to overheat and eventually short out.
The battery is still good for two reasons:
1. If there was not enough power, DME would go nuts with all kinds of warning lights. This is typical for BMW. It makes people chase, for example, the code for the AWD system when, in fact, it is a battery issue.
2. It pushes two aftermarket amplifiers with no problems. The head unit does not blink due to a drop in power, etc.
 
I replaced the original BMW battery in my 2009 E90 2 years ago. The battery had a 2008 date code, car was built 01/2009. The battery actually still worked, but it was starting to crank pretty slow on a cold morning so I replaced it before I got stranded somewhere.
 
My trucks original battery was 11 years old when replaced. I was pretty happy with that. The belt was 27 years old and 250k but got destroyed by a bad tensioner. I wanted to see how far it would go.
 
I’m currently running an Optima d34m that’s at least 12 years old. I will need to pull it out to look for the actual manufacture date.
 
When I traded in my 2015 Volt on my 2017 Bolt at the beginning of this year the Volt was still on the original battery!

Also when my aunt got her 2015 Subaru she traded in her Corolla… I think it was a 2002? Original battery! But it burned a quart of oil per tank of gas.
 
The aftermarket battery in my Trailblazer is from 2011, froze once but still kicking. Even the original batteries in my 2017 Ram 3500 are still kicking.... as usual they died and froze once a few years ago yet here we are.
 
My Pontiac G6 beater is on 7 years on a GM aftermarket battery showing no signs of weakness and it's short tripped. I do put it on a 2amp charger in the fall for a weekend. I bought a 2017 traverse new got a $100 gift card from GM card I used it to purchase this battery. I'm on the fence do I change it out or throw the dice again this winter I usually swap out at 5 year mark before winter
 
Not a car but the Yuasa battery in my bike lasted from July 2004 to June 2024. Still about 70% when I changed it out. On the tender every couple weeks in the off season.

Paco
 
Is the battery located outside of the engine bay? Many BMWs have the battery in the trunk/rear of the vehicle. I get much longer life out of them than my vehicles that have the battery in engine bay.
I think that’s why my battery is still running good at 12 years old. It’s a Toyota Previa where the battery is at the front of the chassis, but the engine is in the middle.
 
My 2016 Civic and my 2018 Corvette are both still on their original batteries! My last Civic went 9 years on a EverStart Maxx battery from Walmart. The climate in my area is very favorable for long battery life, as I have never had a battery die early on me. It’s not super hot in the summer (typically 75-85) and it’s not super cold in the winter (most overnight temperatures are around 10-15F)
 
I had 13 years on the original battery on my Tacoma. The last 6 months of that it was actually testing as bad, but would still start the truck without a problem. I changed it when my wife started driving it more rather than risk her being stranded.

My Avalon is old enough to drink and only on its third battery.

These are both base model vehicles with pretty low electrical demands. So, not at all as impressive as OP.
 
Two months short of 7 years with a group 35 Everstart Max with removable caps and subjected to regular maintenance with distilled water. I posted on it for almost three years on the thread “ Tracking an aging battery”. The summers reached 90 F occasionally and the temps got below 0 F in the winter occasionally. Near the end the battery voltage would drop below 12 V and the battery tester would indicate below 600 CCA.
 
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