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Old 12-06-2012, 12:46 AM   #27
kuksul08
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Join Date: Sep 2006
Location: California
Posts: 2,108
My Ride: M3
I would imagine they use pretty much the same 18650 Li-Ion cells that you find in a laptop battery. From my experience, a good quality Sanyo laptop battery pack under normal use had about 40% of its capacity after 3 years and just couldn't deliver capacity or power-wise. In general, it is not uncommon for Lithium Ion batteries to degrade 2 years from the date of manufacture, regardless of use. It's simply due to corrosion and chemical breakdown in the cell and I don't see how the Tesla batteries would be exempt. The life can be extended by careful charge routines, proper cooling, min/max voltage limits and cell balancing, but yes, much less than 8 years. The crappy thing is that performance will diminish gradually so it's not so easy to tell when you aren't getting the most out of your car.
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Look at that subtle jet-black coloring. The tasteful thickness of it. Oh my God, it even has a 6mt.
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