(10 Jan 2023, 6:34 pm)streetdeckfan wrote The amount of degradation depends on how much overprovisioning the manufacturer decides to incorporate.

For example, the battery pack might be 450kWh, but only 400kWh is available to be used. That means the battery can degrade 10% without having any impact on the range.

The downside though is the range is reduced compared to if they just used the full capacity!

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Even then though using any rechargeable tech I have, in particular phones. They degrade an awful lot more than that. After 5 - 6 years you'd be lucky to get half a day and that's not using it all the time either. Obviously they'll have optimum charging etc but I'd be surprised if they only lose 10% over 10 years or it'll actually be much more.

I'm not aware of any advancements in tech that has improved the issue and I can't imagine a replacement battery coming along very cheap either - in fact I'd imagine it being borderline uneconomical. I'd be surprised if they get anywhere near 15 years out of them without major cost.