How can I make best use of asus s551ln laptop?

To help you maximize the use of your Asus s551ln, maintain its system performance, and ensure all your data are kept secured, here are some useful tips that you can follow, and this is copied from official manual, please feel free to follow it.
•Update Windows® periodically to ensure that your application shave the latest security settings.
•Use ASUS Live Update to update ASUS-exclusive applications,drivers and utilities in your Notebook PC. Refer to the ASUS Tutor installed in your Notebook PC for more details.
•Use an anti-virus software to protect your data and keep this updated too.
•Unless absolutely necessary, refrain from using force shutdown to turn off your Notebook PC.
•Always backup your data and make it a point to create a backup data in an external storage drive.
•Refrain from using the Notebook PC at extremely high temperatures. If you are not going to use your Notebook PC for along period of time (at least a month), we recommend that you take out the battery if the battery is removable.
•Disconnect all external devices and ensure you have the following items prior to resetting your Notebook PC:
-Product key for your operating systems and other installed applications
-Backup data
-Log in ID and password-Internet connection information

asus s551ln battery

Also if you are looking for a original asus s551ln battery here is the details:

Voltage: 11.4V
Capacity: 4210mAh (48Wh)
Battery cells: 6-cell
Chemical: Li-ion
Battery Color: black
Condition: new original battery
Warranty: 9 months