This is awesome. It can start your dead battery. This also can charge your phones bikes, trucks and so on. It also has a light on it with 3 modes S.O.S, strobe and high. It is really pretty simple to use and does work pretty dang good. You don’t need the old jumper cables with this Portable Car Battery Jump Starter. I have has over the years my car just wouldn’t start. I left something on or just the battery going back and there was no one around to give me a jump. With this jump starter you don’t need another car to jump your car. It does it all right there with this probable jumper. It is a good size and would be prefect to have this in your car at all times just in case you break down on the ride. I wish I would have had one of these years ago. I totally recommend this for everyone. It is amazing quality and durable .