I have an Ideapad Y400 running Ubuntu 13.10. It previously ran Windows 8, and had a Lenovo utility to limit the battery charge to 60%. Now that I've installed Ubuntu, of course, the utility is gone. Is there a way I can limit the charge level?
Tp_smapi works for this purpose for Thinkpads, but I have an Ideapad, which apparently isn't supported.
this post is quite old but I stumbled over it when I was searching for a solution setting battery charge levels for my Lenovo Ideapad U430 under Ubuntu. I actually got this working thanks to this thread and want to share my solution. I installed acpi-call. Following commands are setting the charge level:
# 100%
echo '\_SB.PCI0.LPCB.EC0.VPC0.SBMC 5' | sudo tee /proc/acpi/call
# 50%-60%
echo '\_SB.PCI0.LPCB.EC0.VPC0.SBMC 3' | sudo tee /proc/acpi/call
this could be due to forgetting conservation mode on in the Lenovo vintage software in windows
to manage conservation mode from linux there is a gnome extension that does the monitoring and switching (like Lenovo vintage on windows)
there is a also a manual method
::::::::: Conservative mode commands ::::::::
from terminal
sudo su
write password
reading the current status:
cat /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode
enable Conservation mode:
echo 1 > /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode
disable conservation mode:
echo 0 > /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode
For future reference, on my Ideapad L340 with Debian Buster (kernel 4.19) I can just do:
echo 1 > /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode
Install laptop-mode-tools on your pc.It will increases the battery discharging time.
sudo apt-get install laptop-mode-tools
After that restart your pc.
