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is inaccurately reporting its capacity older or is older, reporting incorrectly, it may be possible to recalibrate the battery. This can correct the reported capacity or battery gauge to extend its life. the life of the battery.
[ … ]
For help understanding what calibration is, why it’s important, and how to calibrate'''''IMPORTANT: Recalibration does not save worn out batteries in other types of devices, check - it ONLY corrects the capacity. There is no way to recover a worn out battery, but the [[Battery Calibration|Battery Calibration Wiki.]] situation can be temporarily improved.'''''
[ … ]
'''''Important: Battery recalibration will not save a worn out battery.''''' This will correct the reported capacity and extendFor help understanding what calibration is, why it’s life for a short period important, and how to calibrate batteries in other types of time, but will not recover devices, check out the pack. '''''If there are any improvements, these capacity bumps are typically short-term.''''' [[Battery Calibration|Battery Calibration Wiki.]]
[ … ]
=== ++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 '''''You will likely see a capacity decrease. This is good since the capacity reported by the BMS is accurate.''''' - not bad.'''''
* '''''Avoid '''''Try to avoid using your laptop while it is charging. This may affect calibration accuracy.'''''
* If your laptop does not allow you to use it when '''''Inconsistent reporting may indicate the battery drops to a certain percentage, you will need to use a workaround. is EOL. This varies based on the BIOS type (UEFI or Legacy). can be delayed with proper care, but not reversed.'''''
* '''''If your battery is older, consider a ~10% discharge. A full discharge may cause damage.'''''
=== ++How to recalibrate the battery++ ===
100%.
* Use the laptop it until it reports a 0% capacity and shuts down and no longer turns on.
** See '''BIOS '''''BIOS lockouts (known)''' and known OEM quirks''''' for bypasses if you use an HP or and Lenovo laptop. laptops.
* Immediately recharge the battery to start recalibration. battery. Do not use the laptop. laptop if possible.
=== ++BIOS lockouts (known)++ and known OEM quirks++ ===
* '''''HP '''''(BIOS lockout) HP laptops have a 15% BIOS lockout and will need to be bypassed to do for a full discharge. discharge.''''' Immediately charge the battery once the battery reaches 0% and the laptop shuts off.''''' off.
** '''''All HP laptops/2010+ Compaq.'''''
* '''''(BIOS lockout)''''' Some Lenovo laptops have a ~7% 7% critical low capacity error lockout (0190). '''''This only comes up
** '''''Only occurs if the laptop is turned shuts off before early. Easily bypassed.'''''
* '''''(Known quirk) Some Dell batteries hold incorrect data once the battery reached 0% is nearing the end of it’s life. This self corrects with time and a later recalibration. I have seen this on a Dell NX31D (2014/E6440) and dies.''''' a RMJFW(2014/E6220)'''''
is inaccurately reporting its capacity older or is older, reporting incorrectly, it may be possible to recalibrate the battery. This can correct the reported capacity or battery gauge to extend its life. the life of the battery.
[ … ]
For help understanding what calibration is, why it’s important, and how to calibrate'''''IMPORTANT: Recalibration does not save worn out batteries in other types of devices, check - it ONLY corrects the capacity. There is no way to recover a worn out battery, but the [[Battery Calibration|Battery Calibration Wiki.]] situation can be temporarily improved.'''''
[ … ]
'''''Important: Battery recalibration will not save a worn out battery.''''' This will correct the reported capacity and extendFor help understanding what calibration is, why it’s life for a short period important, and how to calibrate batteries in other types of time, but will not recover devices, check out the pack. '''''If there are any improvements, these capacity bumps are typically short-term.''''' [[Battery Calibration|Battery Calibration Wiki.]]
[ … ]
=== ++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 '''''You will likely see a capacity decrease. This is good since the capacity reported by the BMS is accurate.''''' - not bad.'''''
* '''''Avoid '''''Try to avoid using your laptop while it is charging. This may affect calibration accuracy.'''''
* If your laptop does not allow you to use it when '''''Inconsistent reporting may indicate the battery drops to a certain percentage, you will need to use a workaround. is EOL. This varies based on the BIOS type (UEFI or Legacy). can be delayed with proper care, but not reversed.'''''
* '''''If your battery is older, consider a ~10% discharge. A full discharge may cause damage.'''''
=== ++How to recalibrate the battery++ ===
100%.
* Use the laptop it until it reports a 0% capacity and shuts down and no longer turns on.
** See '''BIOS '''''BIOS lockouts (known)''' and known OEM quirks''''' for bypasses if you use an HP or and Lenovo laptop. laptops.
* Immediately recharge the battery to start recalibration. battery. Do not use the laptop. laptop if possible.
=== ++BIOS lockouts (known)++ and known OEM quirks++ ===
* '''''HP '''''(BIOS lockout) HP laptops have a 15% BIOS lockout and will need to be bypassed to do for a full discharge. discharge.''''' Immediately charge the battery once the battery reaches 0% and the laptop shuts off.''''' off.
** '''''All HP laptops/2010+ Compaq.'''''
* '''''(BIOS lockout)''''' Some Lenovo laptops have a ~7% 7% critical low capacity error lockout (0190). '''''This only comes up
** '''''Only occurs if the laptop is turned shuts off before early. Easily bypassed.'''''
* '''''(Known quirk) Some Dell batteries hold incorrect data once the battery reached 0% is nearing the end of it’s life. This self corrects with time and a later recalibration. I have seen this on a Dell NX31D (2014/E6440) and dies.''''' a RMJFW(2014/E6220)'''''
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