Reason analysis:

1. Software problem

Generally speaking, computers of brands like Dell will be equipped with power management software. If a certain "battery protection mode" is enabled, the power management software will prohibit battery charging and discharging after detecting that the user is using AC power to extend the battery life. Battery life.

Therefore, if you find that your laptop is not charging, you can first enter the relevant power management software, turn off the battery protection mode or check the disable charging option. If there is no problem with the hardware, the battery can be charged.

2. There is a problem with the hardware itself

Generally speaking, we can judge the hardware failure of the battery itself by restarting the computer and re-plugging and unplugging the battery. If the battery still cannot be charged, you may wish to install some hardware detection applications to obtain approximate battery loss reference information. If it is determined that the battery hardware is faulty, do not open it or try to repair it yourself. There are certain risks and it is recommended to have it repaired.

Fix:

When entering the bios when starting a Dell laptop, you will usually find the "start battery calibration" option in the power project, that is, "start battery repair". Generally speaking, the user will first be reminded to connect the power adapter for full charging, and then the text will be displayed The user is prompted to disconnect the AC power supply, and the win7 system will continue to discharge the notebook until the battery is completely exhausted, and then the notebook will automatically shut down. We can connect the power adapter to charge, but do not turn it on. After the charging indicator light goes out, the entire process It's complete.

Note: The BIOS battery repair process may take 5 hours, so be sure to do it when you don’t need to use the laptop. If this still cannot improve the battery condition, then it can only be said that the battery is probably broken. You You can send it for repair or buy a new original battery.

Repair methods for battery charging failure:

1. It is possible that the battery has aged. Generally, batteries are basically aged after being used for about 3 years, even lithium batteries. Go to a repair shop to have it checked.

2. Generally, you need to wait until the battery reaches about 20% before charging. Do not wait until 0 o'clock, as it will damage the battery too much.

3. Check the battery to see if the wiring is loose or the connection is not firm.

4. If the circuit is normal but still cannot be charged, you can check to see if the circuit board of the battery charger is broken and try a different one.

5. If the circuit is normal and the charger is good, it may be that the circuit board inside the computer is faulty.

Note: Sometimes it is a problem with the power adapter, and there are relatively few bad cases. If you have a multimeter, you can test the output voltage.

The above is the method to fix the problem of Dell notebook battery not charging. Friends who use Dell notebook, if you encounter the situation that the battery cannot be charged, you can read the above tutorial to find out the reason. I believe you will find the solution from it.