One thing I really like about the mophie powerstation USB-C XXL is that it doesn’t require a second charger when I’m traveling. I simply plug the MacBook’s adapter into the battery, then connect the battery to my MacBook via an included USB-A to USB-C adapter. The battery is smart enough to pass energy through to the MacBook first before charging the battery cells. When I wake up in the morning, my MacBook is fully charged and I never have to worry about running out of juice. Apple states that the MacBook can run for up to 10 hours on a single charge, but I generally need to recharge after anywhere from five to eight hours, depending on my workflow. Carrying the mophie powerstation USB-C XXL’s gotten rid of my battery anxiety when using my MacBook for productivity and helps me stretch my MacBook Pro’s battery enough that I don’t have to think twice about using power-hungry applications on the go.