Has anyone tried this yet? I won't get my MacBook for another 4-6 weeks but I plan on charging it with a 10,000mah+ battery pack. How long would this take it would it just keep the MacBook alive? Would also like to know if there is any way you can control the charging. Because maybe I'd like to charge my battery pack while the Mac is using av power. Wait... I can't do that as it only had one port. Damn might have to get an adapter.