mdrejhon
Senior Member
Price ballpark is roughly accurate.Thanks for this. Curious - does the car have software to show the history of your charging? I'm thinking in the context of resale value when buying a used car - obviously as you noted, a 5 yr old car could last another 2-10 years on it's batteries, but unless you know how the owner treated/managed the batteries, how would you have confidence in purchasing that vehicle.
Also, is 8K-10K the correct price range when replacing batteries?
It definitely should be amortized as per-kilometer operating cost (just as you should with a gasoline car, too...). But typically it's just one battery pack for a typical car ownership's lifetime (~10 years). Depending on how much you baby it, just like as you would baby a gasoline car, just different babying techniques. You can make a good EV battery last roughly as long as the time it takes to need a rebuild of a transmission/engine (biggie cost too), give or take a hundred thousand kilometers or thereabouts -- that territory.
Hybrid cars with batteries (e.g. Prius plug-in Hybrid) already employs the principle of shallow-cycling to prolong service-lifetime of their batteries. During a long drive, it tries to keep the battery's state of charge roughly around the middle, rather than too empty or too full.
Battery history download: It depends on the car.
There are cars (hybrids, plug-in hybrids, full EV) that let you download complete charge histories (battery cycling graphs), as an enhanced form of OBD2 diagnostics. Manufacturers use them for analysis and battery warranty verification to make sure you didn't abuse the charge cycle with shenanigans like racetrack use. In fact, many of them even download data from specific sections from its battery pack, so one can determine if most of the pack is good and some of it has some bad cells. In due time, we'll probably have kick-ass apps for our tablets, that can tell us if a used EV's battery pack is still fairly good, and display a bunch of lovely battery health statistics. I can totally imagine the EV economy will bring a big boom of these spinoff tools at the critical mass point where many are buying used EVs.
In the interim, a simple gauge is possible for a quick approximate judgement: Maximum predicted range meter display after a full charge. Tesla displays this on its dashboard -- and you want to avoid a used Tesla whose fully-charged range is now less than half its original.
Pragmatically there are carbon lifecycle issues with EV vehicles that we need to work to gradually solve (...aka: don't use coal power to charge cars, etc...) but I just look at Oil history (as much as I'd like to support Canadian Oil), look at Paris Summit (whether you're for or against), and we really need to include EV in the discussion multi-generational transition dragged kicking and screaming to a cleaner economy, incrementally in a 20, 50 or 100 years long march.
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