Exactly, too many shoddy batteries out there. Having said that the cheap one from Amazon I put in my 6 still works fine 2 years later. But it is a short in the dark and with the work involved on a 7+ I cannot be bothered doing it over and over until I have a good battery.
In any case the 7+ in still behaving well under IOS 15, no real change to IOS 14.
Nevertheless I am sitting on the fence:
1. Invest 55 Euros and have a new battery installed in the 7+ at the Apple Store
2. Get a SE 2020 which would cost me around 350 Euros - downside the smaller screen, upside inductive charging and touchID and a much faster processor
3. Splash out a 1000 Euros and get a 13Pro which I am sure is a great phone but I hate that it doesn't have touchID (and I hate the cash outlay)
Opinions are more than welcome 🙂