Why the laptop turn off automatically although the Battery is well charged?

[sunildassanayake]

when turn on my laptop(ASUS ALTEC LANSING), it indicate 90- 95% of battery life streanth. but when it goes to 80 - 85%, the machin turn off automatically. why is it?

 

[prod_user]

Please check for any loose connections.
Scan your machine with antivirus/defender for any malfunction.

 

[marksavio]

this only happens when you are on battery and unplugged?