From: Julio MacWilliams >There are very few batteries that can be immersed, and those are heavy and expensive. Then, figuring out a way to charge the batteries while keeping the contacts from corroding is an even bigger challenge. ---------------- hi Julio, Consider a battery enclosed next to a pump. Encapsuled with them is a coil. If a magnet rotates within the coil, it generates a current that can charge the battery. Outside the battery/coil/pump box, place a motor with a magnet on the end of a shaft. Bring the outside magnet near the pump unit. Spin..... battery gets charged. ============= Several years ago, Paul Blankinship who lives in Raleigh NC designed this system for recharging small unmanned submarines. it has been used at sea in conjunction with researchers from Woods Hole Oceanographic Institution. If you want to contact Paul, send me and email. foxhill_at_shore.intercom.net bliven *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.gasp-seakayak.net/paddlewise/ ***************************************************************************Received on Thu Feb 04 1999 - 16:05:11 PST
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