Most likely called charge_control_end_threshold (only mention of the identifier you used is in thinkpad_acpi.c), and not available on nearly all hardware. http

Most likely called charge_control_end_threshold (only mention of the identifier you used is in thinkpad_acpi.c), and not available on nearly all hardware. https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-class-power https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-c...