Laptop Shuts Down At 80% Battery Power

[glenaw]

I have a Asus laptop
Model : G74S
MB Ver. : G74SX
G74SX-DH71
Windows 7 Premium


After charging the laptop to 100% I take the power cord and unplug it. After unplugging it the power will drop to 80% and then the laptop will shut down with no warning.

 

[webworkings]

Sounds like you need a new battery.