This is the first 2-in-1 portable jump starter and OBD2 scan tool that I’ve seen. I never really thought about this being a thing, but it does seem like a pretty good idea–especially for those of us who like to maintain our own cars. The MUCAR JS501 is such a device that provides you with emergency jump starting with the functionality of a code reader when you need it. This tool was provided to me for review for this post.