TSA-Friendly backpack with 10.400mAh battery pack. This is a solid deal. Even lower than the $99 price early backers on Kickstarter got. It has a separate slot for tablets, large inner compartment, TSA-friendly laptop compartment, water bottle pocket, crush-resistant pocket for sunglasses and phone, lots of compartments, and more. The bag also has a cord organizing system so you can route cords from the charger to whatever compartment you want without getting a big net of cords in the middle of the bag.
I have this backpack and love it.
And for those wondering, the battery is 'Built-in' by having a small pocket designed for it, so it can be taken out of the pocket easily (the battery is not in the pocket when you receive the bag).