They talk about Apple but Sony phones have had this feature for a while. In the settings you can choose whether the phone is always 100% charged, or whether it charges to 80% (or a custom %) or whether you want it full by the time you wake up.

I use the 3rd option. It stops charging when it gets to 90% and I tell it when I'm getting up, and just before it will charge up to 100 %.

Best of both worlds. Only ever having 80% to start is not nice because you get less juice during the day and need to charge by the evening. Plus battery anxiety. I'd rather have a 100% full battery.

Clearly newer, better battery tech is needed. Plus replaceable batteries.

Degraded battery life is rarely the thing that tanks a device for me (sure, it degrades, but it's rarely the reason I replace it). I mean it's great to know about this, but the last four phones I've replaced have been because (a) my old phone didn't work on my new network, (b) my camera failed, (c) my chipset wasn't up to the task of the most recent OS update, and (d) there was a fundamental flaw in my handset and the manufacturer offered a $50 upgrade to their newer model with trade.

Actually, thinking about it, a and b might be switched, but the point stands: it's probably been twenty years since battery life was the reason I upgraded (from a flip phone to another flip phone, iirc).

I still charge to 100, but I use a slow charger, so my phone doesn't start to spew flames while it's charging. I wouldn't be surprised if that helped as well (as heat is another battery killer).

I just can't be bothered to handle that shit manually.

There used to be a magisk module that would charge the battery intelligently and stop before b Full charge but I don't think it exists anymore sadly, or at least I haven't been able to find it