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Changes to Recalibrating laptop batteries Introduction

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How to recalibrate the battery in your laptopRecalibrating laptop batteries
How to recalibrate the battery in your laptopRecalibrating laptop batteries
Introduction
accuracy. This is not a solution you can use to avoid replacing a battery that's beginning to wear out but can '''NOTE: Battery recalibration cannot be used to get save a failing battery. While it will correct these packs to give you an idea of how much life is left. While it will correct these packs, any left, capacity increases will not be appreciable. [ ] '''Note: This process also does NOT not restore lost capacity. It is meant to capacity; it will correct the capacity what is reported to by the BMS in your battery.''' BMS.''' [ … ] ++ '''Guide notes''' ++ * '''WARNING: If your battery exceeds 30-40 °C/86-104 °F, the battery should be treated as damaged and be replaced!''' batteries. This may result in If this damages your battery damage; be prepared to replace the battery if this happens.''' replace it.''' * If your laptop does not allow you to use it when the battery hits a certain percentage (notably HP), you will need to find a workaround to calibrate the battery correctly. This will vary based on the BIOS used type (UEFI or Legacy). * In most cases, you will see a battery capacity decrease rather then an increase. decrease. This is good, as unaccounted good since the reported wear is now known. correct. * Once the battery is charging, it is best Try to let avoid using your laptop do it's thing and not use it. while it is charging. This may affect impact the calibration accuracy. [ … ] '''How to recalibrate the battery''' * Charge the laptop to 100%. * Use the laptop until it's at 0% and shuts down**/***. * Immediately recharge the battery. To recalibrate the battery, charge the battery to 100%. BIOS lockout. For these laptops, lockout and require a workaround is required.Use workaround. Use the laptop until the battery hits reaches 0% and shuts off. Immediately charge the laptop until it is fully charged. ***Lenovo laptops have a ~7% critical lockout, but it does not apply unless the laptop is shut down at that percentage level.
accuracy. This is not a solution you can use to avoid replacing a battery that's beginning to wear out but can '''NOTE: Battery recalibration cannot be used to get save a failing battery. While it will correct these packs to give you an idea of how much life is left. While it will correct these packs, any left, capacity increases will not be appreciable. [ ] '''Note: This process also does NOT not restore lost capacity. It is meant to capacity; it will correct the capacity what is reported to by the BMS in your battery.''' BMS.''' [ … ] ++ '''Guide notes''' ++ * '''WARNING: If your battery exceeds 30-40 °C/86-104 °F, the battery should be treated as damaged and be replaced!''' batteries. This may result in If this damages your battery damage; be prepared to replace the battery if this happens.''' replace it.''' * If your laptop does not allow you to use it when the battery hits a certain percentage (notably HP), you will need to find a workaround to calibrate the battery correctly. This will vary based on the BIOS used type (UEFI or Legacy). * In most cases, you will see a battery capacity decrease rather then an increase. decrease. This is good, as unaccounted good since the reported wear is now known. correct. * Once the battery is charging, it is best Try to let avoid using your laptop do it's thing and not use it. while it is charging. This may affect impact the calibration accuracy. [ … ] '''How to recalibrate the battery''' * Charge the laptop to 100%. * Use the laptop until it's at 0% and shuts down**/***. * Immediately recharge the battery. To recalibrate the battery, charge the battery to 100%. BIOS lockout. For these laptops, lockout and require a workaround is required.Use workaround. Use the laptop until the battery hits reaches 0% and shuts off. Immediately charge the laptop until it is fully charged. ***Lenovo laptops have a ~7% critical lockout, but it does not apply unless the laptop is shut down at that percentage level.
Time Required Min
8 hours
12 hours
Time Required Max
12 hours
1 day

Tools

  • IR Thermometer x1 Optional; Useful to check the battery temperature. (featured) added.
  • IR Thermometer x1 While not required, this can be used to verify the temperature of a hot running battery. (featured) removed.

Parts

  • Replacement laptop battery x1 Used to replace a failed or unreliable battery. (featured) added.
  • Replacement laptop battery x1 If your battery cannot be corrected reliably, purchse your replacement battery based off of what your specific laptop uses. (featured) removed.