There is a red cross where the Dell laptop shows the battery.

This usually means that the battery has failed. First, update the battery driver of the system, depending on the situation. The operation is as follows:

1) Disconnect the power adapter and turn it off;

2) take out the battery;

3) Connect the power adapter and turn it on;

4) Unload the driver: computer-management (right click)-device manager-battery-Microsoft acpi compatible control mode battery.

5) Turn off the power supply and then disconnect the power adapter;

6) Install the battery;

7) Connect the power adapter and turn it on;

The battery driver will be installed automatically after the system is turned on. At this point, if the prompt message "Please consider replacing the battery" no longer appears, then the battery will be fine and will work as usual; On the contrary, the battery may be seriously damaged, so it is recommended to take it to the after-sales service for inspection and maintenance.