I assume a new Hunter H260 comes with one marine deep-cycle battery that is 'adequate' for short periods of time. If you added lots of electronics or used the lights much, you woumayld need to charge the battery every day.Does the H260 come with a charging line that plugs into the outboard? Have other owners felt it was necessary to add a second (or third) battery or upgrade to gel? How does everyone else keep thier batteries charged when they are cruising? (wind, solar, run the motor).