We've had external battery packs around for quite a while. But how many of those can actually jump-start your car? Not too many. Anker has one that can jump start your car and it's actually on sale today for $59.99, which is an outstanding value. It's Amazon's Gold Box deal of the day, and it's only going to last throughout the day, so you'll need to act fast and pick one up. You can grab yours from the link down below.