I am wondering about the battery life of my brand new rmbp 2.4ghz/8gb/256gb. I noticed that I only get approx 5 - 6 hours. Usage behavior is: Tethering via iPad mini, brightness: 5 bars less than brightest Apps running: pages, numbers, word, photoshop, a view documents in preview and adobe reader, safari (approx 10tabs), mail, sme cloud service, notes. Is this normal? I am almost thinking about swapping with my gf. She's got the mba haswell 4gb/256gb. I wonder if I would get more battery out of that one. I really need the battery time, cuz I work a lot on the go and can't take a power adapter with me.