I suggest you reinstall the battery driver ... you can use the System Information tool. If your laptop battery icon still shows the red cross despite trying the above-mentioned fixes, the problem ...

It will be easier to see if your laptop’s battery is full and charging, or about to die and needs to be plugged in. It will be easier to see if your laptop’s battery is full and charging, or ...

If you notice the yellow triangle, run the Power Troubleshooter. If the tool can fix the issue, then there is no further explanation as to what is causing the issue, follow a different course of ...