Newer Samsung phones have a Battery Protector mode that stops charging at 85% batter. I use that most days, and then will top it off to 100% if I know I'm going to need the battery life the next day. An environmentally friendly approach would be to maybe do it the other way around, where you design phones around those battery limits, and then have a Battery Killer option to "overcharge" your phone (which communicates better that you're hurting your long term battery life when you do that).
Newer Samsung phones have a Battery Protector mode that stops charging at 85% batter. I use that most days, and then will top it off to 100% if I know I'm going to need the battery life the next day. An environmentally friendly approach would be to maybe do it the other way around, where you design phones around those battery limits, and then have a Battery Killer option to "overcharge" your phone (which communicates better that you're hurting your long term battery life when you do that).