The screen brightness is up, there are apps chewing up the CPU and that cuts our battery time. There are many web pages about extending our time on battery but here you didn't reveal much.
Exactly how many minutes do you get on this model?
What model is this?
What's not stock?
I bought a MacBook Air, its battery life was superb when I bought it, but after the update, its battery is draining very rapidly. Can anyone suggest me anything?