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Changes to Recalibrating laptop batteries Introduction

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is older and wish to extend inaccurately reporting it's life, capacity or it is older, it may be possible to recalibrate the battery. This can also be used to correct an inaccurate battery. [ ] '''Battery recalibration will not save worn out batteries.''' The capacity reported by the BMS will be corrected, but these batteries are still worn out and will need battery to be replaced. '''Noticeable capacity improvements are generally short term and do not last'''. extend it's 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++ === 30-40 °C/86-104 °F, °C (86-104 °F), REPLACE THE BATTERY!''''' * '''If your pack is older, use caution or consider discharging the battery a discharge to ~10%. A full discharge These may damage older batteries.''' be damaged with a full discharge.''' * '''In most cases, you will see a capacity decrease. This is good and means since the information capacity reported to by the BMS is accurate.''' * '''Avoid using your laptop while it is charging. The calibration accuracy This may be affected.''' affect calibration accuracy.''' * 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%. use a workaround. This may vary based on the BIOS type (UEFI or Legacy). [ … ] '''How=== ++How to recalibrate the battery''' 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. === ++Known BIOS lockouts++ ++BIOS lockouts (known)++ === '''*HP laptops have a 15% BIOS lockout and will not need to be bypassed to turn on without being bypassed. on. Immediately recharge charge the battery once the laptop is at battery reaches 0% capacity and shuts down.''' off.''' **Lenovo laptops have a ~7% critical lockout. '''This only becomes an issue comes up if the laptop is turned off early.''' before 0% charge.'''
is older and wish to extend inaccurately reporting it's life, capacity or it is older, it may be possible to recalibrate the battery. This can also be used to correct an inaccurate battery. [ ] '''Battery recalibration will not save worn out batteries.''' The capacity reported by the BMS will be corrected, but these batteries are still worn out and will need battery to be replaced. '''Noticeable capacity improvements are generally short term and do not last'''. extend it's 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++ === 30-40 °C/86-104 °F, °C (86-104 °F), REPLACE THE BATTERY!''''' * '''If your pack is older, use caution or consider discharging the battery a discharge to ~10%. A full discharge These may damage older batteries.''' be damaged with a full discharge.''' * '''In most cases, you will see a capacity decrease. This is good and means since the information capacity reported to by the BMS is accurate.''' * '''Avoid using your laptop while it is charging. The calibration accuracy This may be affected.''' affect calibration accuracy.''' * 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%. use a workaround. This may vary based on the BIOS type (UEFI or Legacy). [ … ] '''How=== ++How to recalibrate the battery''' 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. === ++Known BIOS lockouts++ ++BIOS lockouts (known)++ === '''*HP laptops have a 15% BIOS lockout and will not need to be bypassed to turn on without being bypassed. on. Immediately recharge charge the battery once the laptop is at battery reaches 0% capacity and shuts down.''' off.''' **Lenovo laptops have a ~7% critical lockout. '''This only becomes an issue comes up if the laptop is turned off early.''' before 0% charge.'''