Help Battery Draining, screen using 57%

[Mfs2]

I have note and upgraded to jb. After upgrade, 1) it takes long time to charge the battery 2) battery drain out quickly. When checked battery usage, the screen is using 57% of the battery. What is the solution to these problems.

 

[newbie4]

Is this an Official upgrade of 4.1.2 from samsung? How long the battery last and what was use heavy wifi or data?

 

[Mfs2]

My ver is 4.1.1, around 4 or 5 hours with out any heavy wifi or data or even any other app.