There is info that shows phone Li-Po batteries last much longer if they are always kept at 20-80% charge at least, and that both the default charging settings a

There is info that shows phone Li-Po batteries last much longer if they are always kept at 20-80% charge at least, and that both the default charging settings and the marketing materials advertising battery capacity are biased towards bigger numbers. I'm not sure what is the issue here, then, beyond bad communication, especially if only the older battery packs are affected. It is to be expected that if the customer wants to keep using the pack for a while longer, they need to limit how much they cycle the battery every charge. A better solution would be to advertise the average longevity of the Tesla battery packs along with their mileage, but I'm not sure if their target audience really cares about that.