What is the best way to have a mobile power supply for the RPi? I saw in MAKE magazine a guy made a tablet with the Pi and used this to power it;
http://www.amazon.com/10000mAh-Portable ... B009USAJCC
According to him and amazon, it outputs 5v and the author in make says 3A but amazon says up to 3A so I'm not exactly sure what the amps output is. This seems like a perfect battery solution for the Pi but I don't see many people using it in their Pi projects that are mobile. So what are some other alternatives that might work better for a mobile power supply?