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Introduction |
If your laptop battery is older and wish to extendinaccurately reporting it's lifecapacity or it is older, it may be possible to recalibrate the battery. This can also be used to correct an inaccurate batteryextend it's life. | | '''Read me: Battery recalibration will not save worn out batteries.''' The capacity reported by the BMS will be correctedcorrect, but thesethe wear will not be removed. These batteries are still worn out and will need to be replaced. '''NoticeableIn general, noticeable capacity improvements are generally short term and do not last.'''. | | | === ++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%. A full discharge may damage olderthese batteries.''' | * '''In most cases, you will see a capacity decrease. This is good and meanssince the informationcapacity reported toby the BMS is accurate.''' | * '''Avoid using your laptop while it is charging. The may affect calibration accuracy may be affected.''' | * 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). | | | '''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. | | === ++Known BIOS lockouts++ === | '''*HP laptops have a 15% BIOS lockout and will notneed to be bypassed to turn on without being bypassed. Immediately rechargecharge the battery once the laptop is atbattery reaches 0% capacity and shuts downoff.''' | | **Lenovo laptops have a ~7% critical lockout. '''This only becomes an issue if the laptop is turned off early.''' |
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