Script to control battery conservation mode on Lenovo Yoga S940 in Linux. Should work on all ideapad laptops.

ideapad_battery_conservation

#!/bin/bash
# script is based on answers at https://askubuntu.com/questions/1038471/problem-with-lenovo-battery-threshold
# and relies on the module ideapad-laptop
# arguments are status, on and off are self-explanatory
if [ "$1" == "status" ]
then
	cat /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode
elif [ "$1" == "on" ]
then
	sudo echo 1 | sudo tee /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode
elif [ "$1" == "off" ]
then
	sudo echo 0 | sudo tee /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode 
fi

This absolutely works!!