The startmonkey400 is a compact jump start system suitable for use on both standard cars and larger vehicles such as small commercial vans 4x4s etc that have 12v batteries cca up to 1200a the startmonkey400 delivers a jump start current of 12v at 400a and is packed with high tech features to give you total peace of mind the startmonkey400 can restart this type of standard 12v vehicle battery up to 15 times number of times will vary according to engine capacity on a full charge thanks