1. Battery lock caused by excessive discharge. In order to prevent permanent damage to the laptop battery caused by overcharging and overdischarging, the laptop battery is equipped with a protective plate. When the notebook is not used for a long time, the self-discharge behavior of the battery will cause the battery voltage to decrease continuously. When the voltage is reduced to a certain extent, the locking action of the protection board will start to prevent the battery from continuing to discharge.
Solution: Connect the positive and negative terminals of a DC 12V power supply with the positive and negative terminals of the battery for direct charge, stop charging when the battery voltage reaches 11.1V or more, install the battery back to the notebook, connect the power adapter, and test whether the battery is normal.
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2. The power management chip is locked. When replacing the laptop battery (strictly speaking, replacing the battery core) or doing other operations, the power management chip will lose power and cause the management chip to lock.
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Workaround: Depending on the management chip model, use specialized software and programmers to rewrite the chip.
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3. False locking caused by component failure. Due to the damage of the MOS tube and other components on the battery protection board, the battery can not be charged normally, and the phenomenon is basically the same as the battery lock.
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Solution: In the case of power failure, use the resistance of the multimeter to detect the protection board components, and replace the damaged components.
According to my understanding, if the Lenovo Z475 laptop battery management chip is locked, it may cause the battery to be unable to charge or not be used normally.
How to solve this problem, may be determined according to the cause of locking, it is generally recommended to contact Lenovo after-sales service or professional computer maintenance personnel to repair, to ensure that the problem can be effectively solved.
Hello, if your Lenovo Z475 notebook battery management chip is locked, you can try the following steps:
1. Try restarting your computer to see if you can resolve the problem.
2. Confirm that your battery is original battery, if not, it is recommended to replace the original battery.
3. Check whether the battery management option is available in the BIOS. If yes, set it again.
4. If the above steps are ineffective, it is recommended to contact Lenovo customer service or professional computer maintenance technicians for further inspection and repair.
Note: Do not attempt to change or hack the battery management chip yourself, this may cause more serious problems.
This is the battery has been put for a long time, the battery discharged itself, the voltage is too low, and the trigger protection circuit misoperates. The battery is definitely not dead. ～～～～～～～～～～～～
Solution 1: Go to the aftermarket and ask them to activate the battery for you. Be careful not to be tricked into changing the battery.
2:(This method must have a certain hands-on ability) activate and remove the battery by yourself, know that the positive and negative terminals of the battery are connected to the charging sheet, and the rest of the protection circuit charging sheet is not in contact.
Just grab a can and cut the patch and plug it into the battery and then connect the battery to the charging chip and then plug it into the power supply, charge it overnight, and when the battery voltage rises, cut the can and put the battery back in. That's it