Honestly we should define 80% as the new "100%" on such batteries and label "charging to full" as "overcharging".
Psychologically, people understand charging a battery to "125%" (or whatever) a lot better: Do it when you really need to but if you do it all the time it wears down the battery a lot faster.
Psychologically, people understand charging a battery to "125%" (or whatever) a lot better: Do it when you really need to but if you do it all the time it wears down the battery a lot faster.