Thanks to Carl Worth’s recommendation, I have now purchased BatterGeek.net’s Portable Power Station.
I’m expecting big things out of this, like 10-12 hours (7-8 hours power station + 4-6 hours 2 laptop batteries) of no need to plug in laptop which is perfect for long flights, trains from Guangzhou to Shanghai (23 hours) and because my ac adaptor melted down because of a knicked cable.
I couldn’t resist the deal. This thing, while plugged into the wall and your laptop, charges both your laptop and itself and has a gazillion power adaptors and a +5V USB connector as well to power your cell phone (charge) and other devices at the same time. Oh, and it has airline adaptors and features “variable voltage selection from 3V,5V,6V,9V,12V,16V,19V,21V,24V,28V.” Power-up!
Save that money from not buying a macbook and get this instead (Did I get that right this time 
Trust me, I don’t really buy that much stuff (except when in china) and try to stay away from the gear purchases. I think buying the “BMW M6 of battery packs” is worth it. Here is more from their site:
Welcome to the BMW M6 of battery packs which powers any device from 3V~28V. Features built in variable voltage selection from 3V,5V,6V,9V,12V,16V,19V,21V,24V,28V. Packed with power at 130WH Capacity. This scaleable power solution features independant power in and power out jacks making it possible to daisy chain multiple units for extended run times. Also features a power off button to conserve charge when not in use. Also features a built in USB port which outputs 5V. Also features a built in USB port which outputs 5V. Includes mobile cell tips to recharge and power most cell phones and PDAs including mini-USB tip for BlackBerry, RAZR and more.
You got that damn right this time.