Saw this Jump start battery pack at Lowe’s. Box said it would jump start a 6 cylinder car. Laughed to myself, but bought it anyway it since it was on the clearance rack for $20 (was $100). It is about the size of a cell phone, only thicker. I had my LS1 Trans am in storage over the winter, battery was completely dead. I hooked this thing up and it started right up. I was amazed. Turn the car off when I got home and it wouldn’t start again. Hooked it up again & it did it again. It only lost 1 out of 5 dots on the charge indicator. Never would have believed it if I hadn’t done it myself.