I cannot say it enough -- redundancy. This small but extremely helpful backup from West Marine for your boat's power supply can have you back up and charging your batteries in no time. It will jump start a jet ski just as easily as your 40-foot cruising sailboat’s engine. This can mean the difference between a more enjoyable weekend to having your radar and autopilot working for on an ocean crossing. It’s always best to have a back up. I have been using this product from West Marine for about three years and it has saved me that many times. It is small and lightweight -- easily charged once your main batteries are running through any 12-volt or regular system. It can be used as a 12-volt power supply and comes with a handy built in work light for when you lose power at night. The Jumpstart Elite has 450 peak amps. For about eighty bucks it a must have on any boat, no matter how good you think your power system is. Happy sailing!
