Here is a device that can charge your MacBook and expand its ports. Voltus has a high capacity battery that lets you charge your MacBook and any USB device. It has a high-speed USB hub that lets you connect flash drives, cameras, and smartphones. You get up to 13 hours of battery life on your MacBook with a Voltus Pro.
The device is compact and portable. It lets you connect your favorite USB devices to your MacBook without needing an adapter. Like what you see? You can find out more on Kickstarter.