You would have to give more info to work with. Some screen shots of your battery history, what is running, apps your using, etc.. Need a better picture of what is going on.
For apps that i am using they are facebook,twitter,instagram,youtube and different games but i dont play online games .....3G is on for whole of the day and my screen brightness is medium .... I think thats all and i forgot to tell you that power saver is on for whole of the day also