What's the longest you've had a battery last?

[Mr.Eeks]

I've got a 2005 Sportster still rocking the factory battery. As for my 2006 4Runner I had to replace the OEM Panasonic last summer.

 

[Planetölogy]

Preemptively replaced the OEM battery in my '06 in April of this year.

 

[noisebeam]

3yr max for any 12V car battery including the aux Prius battery.

 

[azcat90]

Yeah I think you have to be somewhere pretty temperate to get more than 5 years or so. I'm in Denver (with frequent outdoor overnight stays above 10,000 feet in the winter) and ill be lucky to get 3. Pep Boys guarantees theirs forever, so get a nice one the first time and then pay $20 each thereafter.

Freeze/thaw cycle is murder on batteries. Mine usually only last 3 years.

 

[Vwright14]

We just had a 2007 T4R in the shop....customer dropped it off thinking it needed a starter.....battery was only putting out only 125cca but was the original battery. Had over 150k miles on it.

 

[Jon John]

I have only had batteries fail on cold dark nights when it is freezing rain outside. So I just started replacing them every 5 years. I don't even test them, just change them out. Never had a problem since.

 

[ran]

My '07 gets garaged, no more late nights working anywhere. Still on the original.
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2007 SE V6 Titanium

 

[V8Man]

I have a red top optima battery since 1995. I got in my Econoline
Van when I bought it. The battery came out of Ditch Witch trencher so it was used. It will not start my high compression Mustang any longer but I can move to about every other car I have and it works. This battery has both terminals so I can even put it in my 79 Firebird. Currently it's starting a Toro diesel mower.