Power banks and battery packs have become a sad but unavoidable fact of the digital mobile lifestyle. But as versatile and useful as they may be, there are just some devices that they can’t power up when the meter turns red. Part of that has been solved by the use of USB-C in notebooks like the new MacBooks. The other part is addressed by high-capacity, high-output external batteries, like the new powerstation USB-C XXL from mophie that promises to give your MacBook up to 14 hours extra life. Oh, and it can charge your phones and tablets too.