A 12V Jumpbox is a must-have in any vehicle! If your car battery dies you have to wait an hour for AAA to get to you or hassle a stranger to jump start you with their car. Not anymore! Keep a jumpbox in your car and always be prepared in case of an emergency. You can jump-start your car on your own and be back on the road in no time! Some of the larger units function as a multi-purpose power source and have a built-in radio with iPod hookup and can also be used to power items such a laptop, boom box, camcorder, portable fridge, and more. They are great items to have not only in emergencies, but also for tailgating, camping, and road trips!