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cat /etc/laptop-mode/conf.d/auto-hibernate.conf 
#
# Configuration file for Laptop Mode Tools module auto-hibernate.
#
# For more information, consult the laptop-mode.conf(8) manual page.
#

###############################################################################
# Auto-hibernation settings
# -------------------------
#
# Using these settings, you can make laptop mode tools automatically put your
# computer into hibernation when the battery level goes critically low.
#
# This feature only works on ACPI, and only works on computers whose batteries
# give off battery events often enough.
#
# NOTE: If your battery does NOT give off battery events often enough, you can
# enable the battery-level-polling module to make this work after all. See
# battery-level-polling.conf for more information.
#
#
# IMPORTANT: In versions 1.36 and earlier, these settings were included in the
# main laptop-mode.conf configuration file. If they are still present, they
# overrule the settings in this file. To fix this, simply delete the settings
# from the main config file.
#
###############################################################################


#
# Should laptop mode tools perform auto-hibernation?
#
ENABLE_AUTO_HIBERNATION=1


#
# The hibernation command that is to be executed when auto-hibernation
# is triggered.
#
#HIBERNATE_COMMAND=/usr/sbin/hibernate
HIBERNATE_COMMAND=/usr/sbin/pm-hibernate

#
# Auto-hibernation battery level threshold, in percentage of the battery's
# total capacity.
#
AUTO_HIBERNATION_BATTERY_CHARGE_PERCENT=7


#
# Enable this to auto-hibernate if the battery reports that its level is
# "critical".
#
AUTO_HIBERNATION_ON_CRITICAL_BATTERY_LEVEL=1