Carry a bag with you everywhere you go just to carry every device and required charger? Find yourself traveling and constantly looking for an outlet to charge your phone or tablet? You may want to consider a Powerbag.
Powerbag is just what the name says: a bag that provides power to charge all of your gadgets while you're on the go. Whether a backpack or messenger bag, the bags have a battery built-in along with charging cables that allow you to charge your devices on the go, with no need for an outlet. There is even an extra USB port available for you to plug in an extra charging cable.
With batteries ranging from 3,000mAh to 9,000mAh, and the ability to swap out batteries, you are sure to have enough backup power to get you through those long days. Most of the product line ships with a 6000mAh battery--enough juice to charge most phones four times.
Below is a video walk-through of the Business Class Pack. It should give you a good idea of how big the battery is (very light) as well as how the charging of a battery pack works.
If you find yourself being the person who is always hunting for an outlet, and carrying around your charger everywhere you go, give Powerbag a look. The bags range in price from $139 on up to $249 for a business-class briefcase, complete with wheels. If the price is out of your budget, you can always look at the myCharge line and find an external extended battery for your device, which will still allow you to charge on the go.