Last call on Powerbags! Sellout Woot is offering your choice of three different Powerbag 6000mAh charging bags starting at $30 plus $5 shipping. The most popular model is the Messenger bag ($40 shipped) that sports a nice balance of style and functionality. The large built-in battery is large enough to charge an iPhone up to four times, but remember you have to provide your own USB cable. The business / rolling office class Powerbags are also available. 9to5Mac reviewed an older model Powerbag and found it to be well worth its full asking price. Includes a one year warranty.