[nottheengineer]

I can highly recommend ACC (and the ACCA app [1] for setup). It lets me limit my phone to 90% charge with the ability to ignore the limit temporarily when I need to. That's very useful for fixing the battery calibration, which can go bad when using ACC.

It has reduced my battery wear by 40-50% according to Accubattery's capacity graph.

[1] https://github.com/MatteCarra/AccA

[dagurp]

A few people in this thread have recommended it but you need a rooted phone for this, right?

[nottheengineer]

Yes, as far as I know you do.

I don't know how they did it, but it even works when the phone isn't booted.