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In case you have root, you can take a look at /sys/class/power_supply/... Just open any of the files inside the sub-directories of power_supply as text file to get an idea what it does. Some files can be read to get information about the hardware, like the battery voltage. Other files can be written to, to control the hardware. After some trial & error, you should have an idea which files are important to control the charging process. I guess this is also how ACC works. With apps like Automate or Tasker, you can run different scripts/commands to control the charge process i

Generally, charge estimation based on voltage is very inaccurate if we are speaking about Li-Ion-like batteries but old phones used this prediction. However, there are "battery fuel gauge" ICs which a modern phone should use and it measures incoming/outgoing charge of the battery (charge / discharge quantity). It may have a very good prediction based on charge/discharge current, voltage, elapsed time, predicted battery degradation, etc. ...so it is much more complicated than simply measuring battery voltage what would be very inacurate if we are speaking about accurate percents...

Didn't find this topic which I think is a nice feature on maemo forum. So hello to everyone and happy new year 2022! I am hoping to be a new Pro1X user on february. Hoped I would have got it as a birthday present to myself on last march but didn't happen. I have been hassling with Nokia N900 devices for some years and managed to save 70 pieces of them from three crackheads who were thinking of using them as burner phones! They weren't in good condition (I mean the devices) but I am putting them together to contribute them to Maemo Leste developers. Have been sending working one

For those with GNU/Linux-chroots: UPower provides a friendly interface to display the information from that sysfs tree. E.g. rostkatze:~ # upower -e /org/freedesktop/UPower/devices/battery_battery /org/freedesktop/UPower/devices/line_power_dc /org/freedesktop/UPower/devices/battery_main /org/freedesktop/UPower/devices/line_power_pc_port /org/freedesktop/UPower/devices/line_power_usb /org/freedesktop/UPower/devices/battery_bm