I'm concerned about the battery life on my new retina Macbook Pro. Before purchasing, I'd read many reviews raving about the battery life and how battery anxiety was a thing of the past with this model, and how people were going 7-8 hours with a fairly heavy workload with no problems. My rMBP is a brand new late 2013 model, 16 GB 1600 MHz DDR3, 512GB ssd, 2.3 GHz Intel Core i7, Intel Iris Pro 1024 MB graphics, and running OS X 10.9.1. It has only 3 battery cycles on it. I use this laptop for surfing the web, watching videos, as well as editing large batches of raw images in Lightroom and Photoshop (however never really do the latter without being on the charger). Removing the charger from 100% with only Safari running (with maybe 2-3 tabs open, no video or anything) usually tells me I have about 5.5 hours remaining. That, however, seems to deplete faster than should be accurate, especially if I go on to open another tab or two or, god forbid, a whole nother program. Last night I was watching a movie on Netflix with the screen dimmed, and with a fully charged battery I was only showing 3.5 hours available. Is this normal? I was not expecting the rMBP battery to be so touchy, and not quite up to par with the 8 hours of heavy work everyone was claiming. Is something wrong with my battery, or do I just need to do something different to extend my battery life? Thanks!