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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 inaccurately reporting it'sits capacity or it is older, it may be possible to recalibrate the battery to extend it'sits life.
'''Read me:''' Battery recalibration will not save worn out batteries. This will correct the reported capacity, but will not recover the pack. '''These batteries will not gain long -term capacity'''.
=== ++Guide notes++ ===
* '''''If your battery exceeds 30-40 °C (86-104 °F), REPLACE THE BATTERY!'''''
* '''If your pack is older, consider a discharge to ~10%. These may be damaged with a full discharge.'''
* '''In most cases, you will see a capacity decrease. This is good since the capacity reported by the BMS is accurate.'''
* '''Avoid using your laptop while it is charging. This may affect calibration accuracy.'''
* If your laptop does not allow you to use it when the battery drops to a certain percentage, you will need to use a workaround. This may vary based on the BIOS (UEFI or Legacy).
=== ++How to recalibrate the battery++ ===
* Charge the laptop to 100%.
* Use the laptop until it reports a 0% capacity and shuts down*/**.
* Immediately recharge the battery to start recalibration. Do not use the laptop.
=== ++BIOS lockouts (known)++ ===
* '''*HP laptops have a 15% BIOS lockout and will need to be bypassed to turn on. Immediately charge the battery once the battery reaches 0% and shuts off.'''
** Lenovo laptops have a ~7% critical lockoutlow capacity error (0190). '''This only comes up if the laptop is turned off before 0% charge.'''