After plugging in the charger, the Windows laptop displays "Connected but not charged". The common reasons and solutions are as follows: 1. Check whether the battery protection mode is turned on. Some laptops will pause charging when the battery reaches a certain percentage. They can be turned off in the taskbar battery icon or manufacturer's power management software; 2. Reset the power management settings, try to shut down and unplug the battery (removable) or press the power button forcibly discharge (not removable), and update or reinstall the ACPI driver; 3. Confirm that using the original or compatible charger, check whether the voltage, current and charging protocol match; 4. Check the battery status and health, and generate a report through the task manager or run the powercfg /batteryreport command to determine whether the battery needs to be replaced. Most problems can be solved by replacing the charger, restarting, and updating the driver. If it still cannot be charged, it may be that the battery is aging and damaged.

After you plug in the charger, the Windows laptop says "Connected but not charged", which is actually a common problem. There are many possible reasons, such as battery status, power management settings, hardware problems, etc. Below I will divide the common situations into several ways to check and solve them.

1. Check whether the battery is in a suspended state of charging

In order to extend battery life, some laptops will automatically stop charging when the battery reaches a certain percentage (such as 50% or 80%). This feature is usually called "Battery Protection Mode" or "Charge Pause".

• Go to the lower right corner of the taskbar to see if there is a battery icon. Click in and you may see an option similar to "Pause charging".
• If this function is enabled, just turn it off.
• This feature is sometimes hidden in the manufacturer's own power management software, such as Lenovo's Lenovo Vantage and Dell's Dell Power Manager.

2. Try resetting the power management settings

Sometimes the system or driver problems can cause the charger to be identified but not charged. You can try the following operations:

• Unplug the charger and turn off the power.
• Then remove the battery (if it is removable), wait a few minutes before reinstalling it, plug in the charger and turn it on.
• If the battery is not removable, press and hold the power button for about 30 seconds to force the discharge, and then try turning on the battery.

In addition, you can also try to update or reinstall the ACPI driver (that is, the power management driver):

• Open Device Manager
• Expand the "Battery" column
• Right-click on "Microsoft AC Adapter" or similar name and select Uninstall
• Then restart the computer and the system will automatically reinstall

3. Make sure you are using an original or compatible charger

Although not all non-original chargers will have problems, many of them do not charge in due to voltage mismatch or insufficient power.

• Check out the charging protocols supported by your laptop, such as USB-C PD fast charging.
• Check whether the voltage and current output of the charger meet the requirements.
• Try to test it with an officially recommended charger.

Sometimes you use the charging head of a tablet or mobile phone to charge your laptop. Although it can be lit up, it cannot be charged. This is a manifestation of insufficient power.

4. Check the battery health status and system prompts

Open the Task Manager (Ctrl Shift Esc) → "Performance" tab → Click "Battery" to see the current battery status.

• If "Running AC Power" is displayed but the power remains unchanged, it may be that the battery is aging.
• If a prompt like "Battery needs to be replaced" is displayed, it basically means that the battery life has reached.

You can also run powercfg /batteryreport in the command prompt to generate a detailed battery report to see how the battery loses.

Basically these possibilities. Most of the time it is caused by setup problems or battery aging. If you are not particularly anxious, try the simplest one first: change the charger, restart, and update the driver. If it doesn't work, then consider whether the battery is broken.

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