Battery packs are easy to come by, but each offers its own take on best practices for charing your devices. Some even charge all your devices, computer included. Various battery sizes mean different form factors, which can bring you joy or frustration should you have a pack that can’t keep up with your needs. The myCharge RazorMax is probably one of the sharpest looking battery packs we’ve ever seen, but that’s not the main attraction — or is it? We find out.