Sorry, did not see it. Here is link to replacement (it is under the keyboard and is a CR1220 Battery)
https://www.experts-exchange.com/questions/23216691/CMOS-battery-replacement-for-Emachines-Laptop.htmlCMOS battery access involves removing the keyboard and the panel under the keyboard.
First remove the 4 screws under the hinge cover (the plastic button bar that houses the power button, volume,and internet keys) To lift the hinge cover you will need a thin bladed scewdriver to prise it free, there are a few clips including one between the f7 and f8 buttons.
Removing the hinge cover exposes the screws for the keyboard. Remove these and then the keyboard by lifting it toward the screen upward (taking care not to damage the ribbon cable underneath) there is a metallic cover under this and once removed the CMOS battery should be visible. It is a small coin battery (CR1220).
