I do this with my OnePlus device running lineage OS. There’s a toggle to only charge to 80% and I’ve turned it on and always use it and then I only let it drop to about 30% before I plug it back in and this keeps it from getting too high or too low. I think getting too high damages the cells more than getting too low does, but by capping the bottom side at 30%, I guarantee that I will find an outlet to plug it in before I run out of juice entirely.
I do this with my OnePlus device running lineage OS. There’s a toggle to only charge to 80% and I’ve turned it on and always use it and then I only let it drop to about 30% before I plug it back in and this keeps it from getting too high or too low. I think getting too high damages the cells more than getting too low does, but by capping the bottom side at 30%, I guarantee that I will find an outlet to plug it in before I run out of juice entirely.