— I’m wondering. In a few year...

I’m wondering.

In a few years when EV batteries have assumed newer, cheaper, chemistry, will there be an aftermarket allowing you to replace the exhausted battery on your chevy bolt ev (etc.) with something better.

This sort of thing exists already for Prius, and it seems the Leaf.

There were AGM and gel batteries - but again the BMS were well understood and not that complicated. About ten years ago lithium iron phosphate started appearing and suddenly BMS integration and communication become a concern and you’d have to replace BMS to transition to LiPo or LFP.


Now, are these elements that are likely to move towards a standard over time assuming volumes increase from the current rather niche levels of production/adoption?

I’m guessing Tesla (& others?) will try to be as proprietary & walled garden as they can get away with without regulatory pressure.


Hmm, of course with phones the manufacturers eventually end-of-life software and app support.

My wife’s iphone7 was increasingly losing functional apps when we replaced it.

But no doubt auto-makers wouldn’t drop software support for a car.


I'm just saying it's really hard to keep up software support for non revenue generating products. You do it for as long as you can get away with, before ending it. You don't want computers THAT NEED UPDATES in your car. That's my qualifier. Software and chips are fine, updates are not.


I kept an iPhone 6S for 6 years, including a discounted battery replacement because of apple’s throttling settlement. Apple kept updating iOS for security longer than most - but definitely didn’t optimize new iOS and software for legacy hardware. It just got clunker and clunkier.

That’s where used cars come in though right? EVs are basically still too new to be moving in bulk into the used market like old corollas and civics.

The practicality of that remains to be seen of course. It may be a lot easier to keep a 15 yr old civic running than an old Bolt EV, ID4, Ioniq5, etc


Imagine walking into a used car dealer. Not certified pre owned - there’s no way your friendly trustworthy local mechanic can do the work up like a Civic.

You buy a car that’s mechanically so simple and reliable you don’t even need to change oil, or deal with combustion related stresses.

But the moment a certain amount of cells start to go/BMS dies or something else beyond what the battery pack systems can handle? Your car can be mechanically fine but it is dead. And you can’t find a good one in a junkyard. It needed to be charge maintained for the last 10 years.


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