thanks for your support edddd
I am only just now coming across to the,,new way of thinking, that lithium batteries like to be in the range that you stated eg between 20&80% OMG I'm.showing my age now. We used to think that the best way to treat your battery was to totally drain it then charge it to 100 % .UNO about batteries having a memory & all that cr&p. But now I am wondering if that was ever the case.
Either way it seems the consensus seems to be as you say ,for a healthy battery life you should keep it between 20 %90 , 80% even better..
The only conundrum is that a phone battery,these days,lasts for years and year's ,like 3/5 years plus ( moderate use) but really who keeps their phone for that long , if I haven't sold my z7 on eBay and upgraded to say the ZenFone 8 whitin 18 months something's wrong
Having said that I don't like to pass on my phone's if I haven't taken due care with them so I don't let my phone fall below 10 to 20% these days then change to 90%
rgds Roy