Quote:
Originally Posted by redpoint5
I wasn't aware of an app for the Prius, I'll have to try it out.
Curious to know at what percent of degradation people start having reliability issues with the Prius? At 16 years old, my guess is that battery is close to causing problems. My expectation for hybrids and EVs is 15 years of no battery problems, with just a handful of people getting 20 years before the battery gives out.
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For me, my expectations would depend a lot on the design and the chemistry and where it was driven.
It seems that Prius NiMH batteries are pretty much doomed by 15 years, some dying earlier. NiMH isn't the greatest chemistry, but Toyota generally keeps the capacity between about 25% and 75%, mimimizing degredation. (I've heard that on 3rd gen they tried to use more of the battery and as a result 3rd gen Prii don't have as good of battery life as 2nd gen.)
With lithium batteries, the LFP (LiFePO4) batteries are supposed to have close to double the longevity of Li-ion batteries. I guess we'll find out if that's true.
Some EV manufacturers allow you to charge to less-than-100%. 2014 and later Nissan Leafs don't. You charge to 100% or you have to manually disconnect it every time. So no thermal management and no practical way to keep the battery from charging to 100%. The good news is some people get a new battery before the 8 years of battery warranty is up. If that happens at 7.5 years and the second battery also lasts you 7.5 years then I guess that's a total of 15 years.