the maximum charging capacity of a
notebook battery decreases over time
causing the battery to lose its ability
to accurately gauge its true charge
capacity calibrating a battery resets
the battery gauge and ensures the
battery recharges completely this video
shows two methods for automatically
testing and calibrating the battery as
well as a method for manually
calibrating the battery HP system
Diagnostics is a useful tool for testing
and calibrating the battery to begin
disconnect the power cord from the
notebook then turn off the notebook
wait a couple of seconds and turn the
notebook back on immediately press the
Escape key and repeatedly press it when
the startup menu opens select system
Diagnostics by pressing the f2 key
when the HP PC hardware Diagnostics UEFI
window opens click the battery test
button
the battery test window opens and shows
the amount of time for the battery test
and the estimated time for the battery
to be calibrated
click the start battery test button
when the battery test is complete a
window opens showing the test results in
this example the battery passed the test
and you do not need to take any action
if the system detects a problem
a brief solution for the problem such as
calibrate or replace shows here follow
the on-screen instructions to resolve
the problem HP support assistant is
another tool for testing and calibrating
the battery start by typing HP support
assistant on the Start screen
select HP support assistant from the
results list when HP support assistant
opens click the battery and performance
box
click the HP battery check button
a test in progress screen opens and
displays until the test is complete then
the results screen opens in this example
the battery status is okay if the HP
support assistant detects a problem
a brief solution to the problem such as
calibrate or replace shows here follow
the on-screen instructions to resolve
the problem you can also manually
calibrate your notebook battery during
the manual calibration cycle the battery
must be completely charged completely
discharged and then recharged again with
the power adapter connected to the
notebook allow the battery to charge
until the level reaches 100% after the
battery is fully charged you need to
drain it completely to do this turn the
notebook off
and disconnect the power cord
press the power button to turn on the
notebook immediately press the Escape
key and repeatedly press it when the
startup menu opens select system
Diagnostics by pressing the f2 key
running the hard disk test is a good way
to completely drain the battery click
hard disk test and click the start hard
drive test button
then click extensive check leave the
notebook on until it shuts down from
lack of battery power next you will need
to completely recharge the battery
connect the power cord to the notebook
and turn on the notebook
when the charge level reaches 100% leave
the power cord connected for at least
three hours to verify the battery is
properly calibrated run a battery test
with the power cord still connected turn
the notebook power off wait a few
seconds and turn the power back on
immediately press the Escape key and
repeatedly press it when the startup
menu opens select system Diagnostics by
pressing the f2 key
select battery test
click the start battery test button when
the test is complete the battery test
shows the calibration status as passed
if the battery status shows calibrate
try calibrating the battery again if the
battery still doesn't calibrate it might
need to be replaced you can find
additional helpful videos at
hp.com/supportvideos and on our youtube
channel youtube.com slash how-to for you
you