Wilt wrote in post #19456331
Yes, nevertheless Toyota had stated, at time of purchase, the need to replace batteries after 7 years, but he drove 14 years on the originals.
Conventional (gas) engine cars need their batteries replaced about every 6-7 years, too. And those batteries only provide electricity to start the engine, and the alternator typically handles the entire load while driving. So not stressed either, much like Prius battery. (Yes, I know, different battery chemistry in gas powered vs. Prius)
And to be clear, I agree with you, Just wanted to point out the difference in duty use hybrid vs. fully electric driving. Even a plug in hybrid (which is what I drive) sees far more dedicated use of the batteries. In that case, the degradation is more evident due to lower range. If you buy a tesla with 320 mile range, and three years later it's dropped to maxing out at 300, not so big a deal.
My Clarity has a 46 mile range in warm weather. Or should I say had. 4 years in it's dropped a few miles. Winter is far worse. I'm getting 30 miles right now. (last winter more like 36)
With such low range to begin with it's quite evident. I will say that amongst clarity drivers I have become, lets just say, far from economic! My lovely Honda love to drive far in excess of the speed limit. Couple that with the fat that i have been to the gas station three times since August, and I am sure my driving behavior has prematurely advanced the age of the battery.
All that said, the fears of battery woes are without question being over-hyped, pushed by an agenda that would like to slow the adoption of alternative fuel cars as much as possible. It's a lot of crying wolf with no real data behind it. Usually if there is an example, it's one, "this guys tesla battery already needed to be swapped" type stuff.