Powerbag 3000mAh 16" Messenger Bag for $39.99.  Shipping is $5.00 for a total of $44.99 shipped. Here is a screenshot for your reference. It holds up to a 16" laptop, features a built-in battery system to charge the average smartphone twice, and includes 30-pin Apple, microUSB and miniUSB connectors and a USB port.  Most places [...]