My wife asked me a question and honestly I wasn't sure. I've got a
car battery that's about 3 years old and the car hasn't been used a
lot till recently. They say in Texas that most car batteries are good
3 to 4 years in age. So my question is does it matter or not matter
how the car was / is used as far as the life of the battery? Or to
put it another way... should I consider replacing it or leave it alone
Why guess-- test it. If it has removable caps, pick up a specific
gravity tester for a few bucks at the local auto supply store. The kind
with the floating balls are cheapest and accurate enough for a
keep/replace decision. The ones with the calibrated float are only a bit
more money and give a more precise reading if you're the kind of guy who
Or get it load-tested. Most places will do that for free-- AutoZone, Pep
Boys, NAPA, etc. -- maybe even your dealer.
Make sure they use the right test load though. My OEM battery has a
sticker on it that says to test it around 200 (I forget the exact
number) but my dealer tested it at around 400-- which is the more common
test load-- and told me my battery was bad.
I doubted that and tested the specific gravity myself which was fine and
then took it to two different auto stores where it also tested fine.
The battery in my ancient 1956 Studebaker is about eight years old and
is still good. This car gets very limited usage but is driven occasionally.
Conclusion, no single answer applies. Some batteries last longer than
others for whatever reasons..
They can last very well. I replaced the original battery in my regularly
used 1999 Peugeot 406 diesel last year. I reckon 11 years is pretty good.
Even then it didn't fail but I was dubious about it getting through another
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