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Ok mech that sounds better.
I used to monitor an old satelite that was launched in the early 70s that had NIMH, they were reconditioned, and I don't remeber what % capacity they had left when one of the motors failed causing it to start tumbling.
I was supprised then I saw what battery tech they were using, but even then we did a series of recondioning runs on them twice a year. The whole system was temperature controled I doubt that a production pack with the hot and cold cycles it would see in regular use in cars.
I have heard people say that a PV solar panel will last 50+ years when they do the cost return analysis, I typically use a much more conservative 20 year lifespan in my calculations. Just because they can last 50+ years in ideal conditions doesn't mean they will last anywhere near that. Same is true of any other technology. I had a TRS80 m3 up to 8 years ago when I tossed it before a move that still worked. That doesn't mean that every computer built then should still be running. And as far as warranties, I have learned the hard way that it is easy for companies to just make up a reason to void it, or just say there is nothing wrong until the warranty is up.
As far as what current battery technology in a car I would expect about 5ish years.
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