TLP: Limiting Battery Charge on LG Gram in Linux
source link: https://www.lorenzobettini.it/2023/06/tlp-limiting-battery-charge-on-lg-gram-in-linux/
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TLP: Limiting Battery Charge on LG Gram in Linux
I had already blogged on how to limit battery charge on LG Gram in Linux. In that post, you had to manually set the threshold “80” in the file “/sys/devices/platform/lg-laptop/battery_care_limit”.
With TLP, the procedure is easier and more automatic.
First, you must install tlp (remember that tlp conflicts with power-profiles-daemon, so you have to disable the latter first or uninstall it). In Arch-based distros:
sudo pacman -S tlp tlp-rdw |
Ensure that the tlp service is enabled on boot and the first time you should start it (“sudo systemctl start tlp”).
By running “sudo tlp-stat”, you should see near the end this line:
+++ Battery Care Plugin: lg Supported features: charge threshold Driver usage: * vendor (lg_laptop) = active (charge threshold) Parameter value range: * STOP_CHARGE_THRESH_BAT0: 80(on), 100(off) -- battery care limit |
Edit the file “/etc/tlp.conf” and uncomment the following lines (note there’s one also for the start of charging, but that option doesn’t seem to be supported in this laptop):
START_CHARGE_THRESH_BAT0=75 STOP_CHARGE_THRESH_BAT0=80 |
Restart the service (“sudo systemctl restart tlp.service”), and it should be already active (run “tlp-stat” again):
/sys/devices/platform/lg-laptop/battery_care_limit = 80 [%] |
That’s all. This will persist on reboot. However, this will not persist if you hibernate and return from hibernation (unless you restart the tlp service as shown above).
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