Old as Dirt!
Join Date: Nov 2008
Location: Tampa Bay Area
Thanked 150 Times in 142 Posts
Rep Power: 9
For what it's worth, we use a Freedom 2KW inverter/charger controlled by a Link 1000 to charge a single large bank of Trojan 105's (450 Amp Hours) and the Echo Charger included on the inverter/charger to keep a single Group 27 "care free" starting battery charged. The starting battery is monitored by a Link 10 and is only used to start our Perkins 4-108 and a Panda 4.2 KW generator. When not on shore-power or the generator, the batteries are charged by a 105 AMP alternator controlled by a Balmar AR5 controller.
Since the starting battery is used only for that purpose, and both our engine and the Panda seem to start very quickly, usually within 1-2 seconds, the starting battery is never really drawn down much and so is usually always fully charged. If it does become low, however, we have a solenoid switch controlled by a momentary switch on the engine control panel adjacent to the ignition that will connect the house bank and starting battery to allow the house bank to give the starter a "boost". This system has worked very well for 8+ years now without difficulty (and we have never needed the interconnect between the house and start batteris).
Further, while I do believe in redundancy, I am curious why you have two Windlasses on a 36' boat?
"It is not so much for its beauty that the sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."