It's long enough to connect to the Positive and negitvie battery terminal on the battery. About 4" and 6" long. If you need to connect a grounding spot. i dont think it's long enough. Or you can connect it to your jumper cable if you have one. and that can extend the length.
That is because the engine has been cranked for more than 4 seconds. Or the jump starter has not been cooled down for 30 seconds after each use. Please e-mail me directly, I will send new cable to you.