Has anyone ever tried using a lipo battery to power a fish finder? Since the voltage requirements on the unit I am getting are 10-17 volts then either a 3S or 4S lipo battery pack should satisfy the voltage requirements. These things are available with over 3 amp hour capacity. The fish finder supposedly draws .25 amps so 3 amp hours or more should give me 12 hours or more of operation. The advantage of these lipos would be the smaller size and weight. Does anyone know a reason these should not be used?