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crwdns2944351:0crwdnd2944351:0Recalibrating laptop batteries - READ FOR HP MACHINEScrwdnd2944351:0crwdne2944351:0

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Introduction
If your laptop battery is older (and you wish to get a little more use out ofextend it) or has an inaccurately reported capacity's life, it may be possible to correct the problem by recalibratingrecalibrate the battery. This can also be used to correct an inaccurate battery.
'''Important:''' '''Battery recalibration will not save a worn out battery.''' The capacity reported by the BMS will be corrected, but it will not repair these batteries. Noticeable capacity improvements are generally negligible or short term.
++ '''Guide notes''' ++
=== ++Guide notes++ ===
* '''''If your battery exceeds 30-40 °C/86-104 °F, REPLACE THE BATTERY!'''''
* '''If your pack is older, use caution or consider discharging the battery to ~10%. ThisA full discharge may damage older batteries.'''
* '''If your pack is older, use caution. This may damage older batteries.'''
* If your laptop does not allow you to use it when the battery drops to a certain percentage (notably HP), you will need a workaround to drain the battery to 0%. This may vary based on the BIOS type (UEFI or Legacy).
* In most cases, you will see a capacity decrease. This is good and means the information reported to the BMS is accurate.
* Try to avoid using your laptop while it is charging. This may impact the post calibration accuracy.
* '''If your pack is older, use caution or consider discharging the battery to ~10%. A full discharge may damage older batteries.'''
* '''In most cases, you will see a capacity decrease. This is good and means the information reported to the BMS is accurate.'''
* If your laptop does not allow you to use it when the battery drops to a certain percentage, you will need a workaround to drain the battery to 0%. This may vary based on the BIOS type (UEFI or Legacy).
* Avoid using your laptop while it is charging. This may impact the calibration accuracy.
'''How to recalibrate the battery'''
* Charge the laptop to 100%.
* Use the laptop until it's at reports a 0% capacity and shuts down**/***.
* Immediately recharge the battery to start recalibration. To recalibrateDo not use the battery, immediately recharge the battery (uninterrupted)laptop.
=== ++Known BIOS lockouts++ ===
*'''*HP laptops have a ~15% BIOS lockout and automaticallywill not turn off and need to beon without being bypassed. '''Immediately recharge the battery once the laptop is at 0% capacity and shuts down.'''
***Lenovo laptops have a ~7% critical lockout. '''This only kicks inbecomes an issue if the laptop is turned off early.'''