When I purchased the Zeus Pro I expected it to be a light-weight contender in the jump starter ring. Wow, was I suprised! This little box has more kick than you'll believe and it will start just about anything you can throw at it, including diesel engines, riding lawn mowers, and even personal home generators. It's easy to store (compact), easy to operate (plug and play), and powerful as all get out. I'd suggest anyone that lives in the norther tier states or anyone that has a vehicle, for that matter, make it a point to purchase this unit! You won't regret it and it's definately worth the price. It's not only for jump starting a weak battery... it also is a power source for charging your cellphone or other devices (two types of USB ports) as well as a powerful flashlight and source for 12V accessories, such as a spot light. A must have for safety and security, especially during the winter months. No need to find my tangled 8 ft jumper cables and then figure out a way to drive close enough to get my vehicle's batter next to theirs. This is portable and so simple to use - you won't belive it. I give it 4 thumbs up (becasue my wife also bought one now to carry in her truck). Uncharted is great to work with as well.