I haven't heard of batteries dying on old EVs being a problem. Usually battery pack replacement is due to faulty cells from production, which manifests during t

I haven't heard of batteries dying on old EVs being a problem. Usually battery pack replacement is due to faulty cells from production, which manifests during the warranty period most of the time. I know degradation was a problem with old Nissan Leafs, since they had no proper cooling, compounded by the fact that they started with a tiny battery to begin with. I've heard of replacements being done there, but a lot are still driving around with the original battery 10 years later. I'm pretty sure we could still use our EV for daily driving with 70% degradation (of 30kWh), since we can charge in our garage. Probably more reliable than an old ICE car too. The bigger the original battery, the higher the degradation can be tolerated without the car being useless. So the problem will decrease over time. There is also a big focus on long-lasting batteries in battery R&D for EVs. Ref Teslas million mile battery/drivetrain. Some EVs also make it possible to replace individual cells or submodules of the battery. Though I haven't heard of that being done in the real world yet. Remember that if you DO replace the battery, you can get a car that's pretty much as good as new with regards to the drivetrain. The inverter and motor is likely to outlast the car anyway. It may even be better than new, in terms of range, if the replacement battery has a higher capacity, which could be possible if replacements are made with a next-generation battery technology.