Outside, Powerbags, which start at $139.99, look like your average nicely-made backpacks, messenger bags and briefcases. Inside, they pack hefty built-in batteries, letting you recharge phones, tablets and other USB-compatible gadgets, including Apple products, while they’re stowed away. Buy a Powerbag and keep it charged, and you can work all day without nervously eyeballing the battery gauges on your gizmos, carrying multiple AC adapters or hunting for wall outlets.
Link: Powerbag