It's in the shop (LI Yacht Service-Huntington, NY ) for its second battery. I got the call today from the owner--Its ready for pick up. About $300 for the replacement and all operational certifications. I "blurted" out that I was in reality relieved, ( I did not ask the price before giving up the unit to him ) and I wondered if I had made a mistake in not just buying a new unit from all the various options, and this seemed a fair price, he said "I'm aware of this, this is the same price as five years ago--I like to keep my customers."