Hello folks not smart but hope I will do
See if you can recalibrate the battery and if that resolves the issue, see below;
Restart the system.
When your screen comes on look for a message on the screen that says Press F2 to enter Setup.
Tap [F2] repeatedly until you see the BIOS screen. If your computer boots to Windows, repeat this procedure again and be sure to hit [F2] as soon as the F2 message appears on the screen.
Press the [->] (Right arrow key) to go to the Power page in the BIOS.
Look for Battery auto-learning.
Enable the Learning option
Press the down arrow key on your keyboard to highlight the option
Press the [-] (minus sign) to Enable
NB: As an asides the behavior has possibly been caused by prolonged connection to the mains power, inside the battery is a memory chip which registers the amount of energy that the battery cells have stored, if you leave the mains power connected for long periods the memory chip expects there to be a 100% charge 100% of the time, this eventually causes the chip to start misbehaving in various ways.