external battery

[boldo]

Hi

I´ve just bought a surface pro 2 128 gb.

I have a doubt, is it possible to charge it with an external battery ?

i have this one

http://www.amazon.es/10000mAh-Dual-S.../dp/B0067TQQI8

would it be possible to charge the surface pro through the usb (very useful if you are on a long trip).

Thankyou