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Nachshon Korem
Asked: 2019-12-21 16:35:52 +0800 CST

How can I set charge levels on ThinkBook

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I want to set charge levels on my laptop - lenovo thinkbook 14s with Ubuntu 19.10. I tried installing tcp but it seems as it works only on thinkpads. I also tried tp smapi same results.

Happy holidays!

lenovo battery charging 19.10

2 Answers

  1. You will have to install and load the tp_smapi kernel module: Install the tp-smapi-dkms module using 

    sudo apt-get install tp-smapi-dkms

    Now, load the tp-smapi module in the kernel using 

    sudo modprobe tp_smapi

    and set the thresholds to virtual files in /sys/devices/platform/smapi

    echo 35| sudo tee /sys/devices/platform/smapi/BAT0/start_charge_thresh
echo 75| sudo tee /sys/devices/platform/smapi/BAT0/stop_charge_thresh

    This setting will make sure that it will stop charging once it reached 75% and only start charging when it drops below 35%.

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  2. dpkg -l tp-s*

    output :

    ii  tp-smapi-dkms  0.43-1       all          ThinkPad hardware/firmware access modules source - dkms version

    activate

    sudo modprobe tp_smapi

    output :

     modprobe: ERROR: could not insert 'tp_smapi': No such device

    I think tp_smapi only works on thinkpads and not thinkbook I think it is

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