sudo add-apt-repository ppa:linrunner/tlp
sudo apt update
sudo apt-get install tlp
nano /etc/tlp.conf
..... et ajouter à la fin:
TLP_ENABLE = 1
START_CHARGE_THRESH_BAT0 = 0
STOP_CHARGE_THRESH_BAT0 = 80
sudo tlp start
sudo systemctl enable tlp