Battery charging level threshold

[jkc-2]

Hi all,

Modern laptops provide a way to limit battery charging level. This is a good way to preserve battery health over time when using the laptop docked for frequently. Would other people be interested in having it integrated to Omarchy setup ?

Coming from Gnome I have little knowledge on Hyprland but this seems like a possible first implementation :
https://github.com/ReZeroE/Linux-Battery-Threshold-Tool

For reference :
https://www.linuxuprising.com/2021/02/how-to-limit-battery-charging-set.html

Specific to Asus https://aur.archlinux.org/packages/bat-asus-battery-bin

And the Gnome details https://vdwaa.nl/gnome-upower-charge-thresholds.html

[emourad]

Oh yes, I second this!

[dcuadraq]

Another option would be to have a choice on install to choose between power-profile-daemon and TLP.
TLP comes with battery threshold

[raphaelmso]

I’d like to see that implemented too. For most devices is as simple as write to the threshold files at /sys/. Linux Kernel already exposes it, a shell script should do the work.

[nicoestrada]

One of the first things I wanted to configure booting up Omarchy. In the interest of the philosophy of avoiding file changes to ~/.local/share/omarchy, I wrote a crate to solve this issue from the cli without having to install tlp and keeping power-profiles-daemon. Hope this helps

Batty

[pelephant2]

This might only work on thinkpads but go ahead and try

sudo pacman -S --needed --noconfirm tlp

Then edit this file

sudo nano /etc/tlp.conf

Find the lines regarding battery settings, remove the leading # to uncomment:

START_CHARGE_THRESH_BAT0=75
STOP_CHARGE_THRESH_BAT0=80

Done

[gabrielvincent]

I think this would be a great default to have in Omarchy. We could have a nice menu (or even maybe a TUI) to manage that config.

[nicoestrada]

Sure no problem it's here

Open to feedback and contributors too. Ideally if we can build out the TUI to show more insights to the battery I think it can be improved upon there

[gabrielvincent]

That's cool! I was thinking about developing something similar. Maybe we can join efforts? I'm going to work on a PR to include start_threshold. Do you have an idea of what you want to implement in this tool?

[nicoestrada]

Absolutely! Make the PR when you're ready and I'll merge. Important battery health and insights from a TUI would be great. Keep in mind that some laptop machines dont expose this path too. I think Acer? Persistence is also important. That way when machine restarts or powers off, the threshold is still working. But I think for now improving the TUI with more insights is a good direction

[Diestroid]

Great and cool tool batty 🔋

[joelrealubit]

Batty is awesome. thanks, @nicoestrada !

[p2ndemic]

/etc/systemd/system/90-battery-threshold.service

[Unit]
Description=Set battery charge thresholds
After=multi-user.target
ConditionPathExists=|/sys/class/power_supply/BAT0/charge_control_start_threshold
ConditionPathExists=|/sys/class/power_supply/BAT0/charge_control_end_threshold

Type=oneshot
ExecStart=/bin/sh -c 'echo 60 > /sys/class/power_supply/BAT0/charge_control_start_threshold; echo 80 > /sys/class/power_supply/BAT0/charge_control_end_threshold'

[Install]
WantedBy=multi-user.target

or

/etc/tmpfiles.d/90-battery-threshold.conf

#    Path Mode UID GID Age Argument
w    /sys/class/power_supply/BAT0/charge_control_start_threshold - - - - 60
w    /sys/class/power_supply/BAT0/charge_control_end_threshold - - - - 80