I use this root-only charge controller: https://forum.xda-developers.com/t/app-root-4-0-battery-charge-limit-v1-1-1.3557002/ https://forum.xda-developers.com/t/

I use this root-only charge controller: https://forum.xda-developers.com/t/app-root-4-0-battery-charge-limit-v1-1-1.3557002/ https://forum.xda-developers.com/t/app-root-4-0-battery-char... My battery is over 5 years old and still holds a charge like it's brand new.