I had to use the Cobra Jumpack this morning to start my car. Luckily, my mom had ordered this from QVC before Christmas and had this on hand for me to use. I went online today to QVC to order one for myself, but it looks like the only brand available now is Halo, so I'm naturally curious if it works just as well or maybe better? The Cobra did not work on the first try, but it did on the 2nd attempt.
The nice thing about Cobra is that is already comes fully charged and ready to use. I'm not sure if Halo's is already fully charged or if you have to first charge it first?