$129 to get a new battery. Now, I don't know exactly when I will be purchasing a new laptop, but I have my sights set on purchasing a 15 inch laptop. Unless Apple comes out with a RMBA in the coming year. I watch a ton of movies on my computer and would like the benefits of a retina screen. Now heres the kicker, this air works perfect. Other than the battery. It barely lasts and the laptop runs VERY hot when doing mundane tasks. I honestly thought this laptop would last a lot longer but 3 years of abuse is still pretty impressive. Only thing needed a change is the battery. I don't mind. I do know that I can't upgrade the O.S to the latest one. When I did, the entire laptop ran slow. Had to downgrade. so what should i do.