Seeing that the battery of my iPod touch 4G drains rather fast, I didn’t want it dying during my time at PAX East with all the line-ups and stuff so I purchased an external battery pack. I’ve used it 3 times already and it’s really great! But the one extremely great thing about it is that is also comes packaged with a USB adapter for the Galaxy Tab 10.1 (among some other adapters) which allows it to charge via battery OR — and this is the best part — a USB port on a hub or a computer~!
Here’s a photo of the battery and the adapter:

The battery doesn’t weigh very much and lasts quite a while! I did a charge with my Tab from about 30% with a fully charged iGeek and while the tablet power got to 100% in a few hours, the battery pack still wasn’t emptied~! In fact, it still had two bars left in its own charge.
Now about the USB adapter~! I can FINALLY use the Tab while sitting at my computer or sitting on my bed~! XD For those that don’t know, Samsung, in their infinite wisdom, has made a proprietary and pathetically short cable for the Galaxy Tab 10.1. The cable, without factoring in the connectors, measures about 3 feet or 36 inches. Apple’s cable for the iPod touch (and probably iPhone and iPad as well) measures 3.5 feet or 42 inches. Believe it or not, that half a feet makes a huge difference for me. Hell, I even bought a much longer cable for my touch too. I thought about doing the same for the Tab but then I came across the external battery pack and ALL IS WELL.

Anyway, I bought mine from ThinkGeek (http://www.thinkgeek.com/gadgets/travel-outdoors/eb7b/) but I FORGOT there was a newer, longer-lasting battery as well. You can get either one from Amazon.com and other retailers as well. 😀