It's not all fancy TVs and home theater setups from Sony today, no sir. They've also seen fit to introduce the Energy Link USB, a portable (what isn't portable nowadays?) USB power supply. Simple enough. Just stuff the little Altoids can-looking thing with batteries and you've got enough juice to run most USB devices for "hours." Exactly how long it'll last depends on what kind of device you've plugged in: is it a simple card reader or a massive hard drive? It'll hit stores in the summertime for $35, which is just in time to power our air conditioned shirts.
Press Release [Sony]