I was reading a lot of posts about battery performance on the new MBAs and comparing other users' experiences to mine. One thing that is often cited but I can't get a good feel for how big of an impact it has is the number of tabs that are open in a browser. The bulk of the stuff I do with my MBA is browsing the web. I would typically call it "light" browsing but that is based on my definition (not watching video) and perhaps not by other people's definitions. I typically have between 4-8 tabs open. Will this use up significantly more battery than if I browsed with only one tab open? If I am looking to maximize my battery performance and get a noticeable increase in life (an extra hour or two) because I'm not at home and don't have close access to a charger should I only browse with one or two tabs? On a similar note, does having more tabs open use more processing power and RAM? I'm only questioning this with respect to a noticeable amount. Clearly having extra tabs open will have some impact but I always figured it to be a de minimis amount such as minutes rather than house with respect to battery life. Is having two tabs open on Google Chrome like having two full instances of the application? Or in another way would having 7 tabs open be equal to 7x the battery, ram and processor usage as 1? I'm not referring to watching videos, loading pages or running flash on 7 pages at a time, but just having an open page that is fully loaded on a secondary tab. Thanks for the help.