So far this is an awesome find. 7,000 joules and 1,000 amps. Heavy duty clamps. The cords are short but the unit is so small and lightweight that I could put it right near the battery jump hookups. My 5.3L V8 had a very dead battery. Nothing would light up on the dash. There was not even a hint of the engine trying to start when I turned the key. The NOCO initially would not work but then I read the instructions which said that for safety concerns it looked for at least 2V or it would not engage. I used their manual override and then the car started right away. The battery was so dead that I had to hold an elevated engine idle for a while. This shows how dead the battery was, but the NOCO did the job. Very impressive. It only weighs 2.6 pounds which is about one-tenth the weight of equivalent battery jumpers.