I live aboard 8 months a year, the other 4 months all electric power is turned off. The boat put away on the hard. I have 2 300 Ah house banks. They are both in use all the time. Charging is accomplished by 440 watts of solar, or the alternator. My start battery is only charged by the alternator or battery charger on the rare occasions I'm plugged into shore power. The alternator charges all batteries via a battery isolator. There is no other connection between the house bank and start battery. My question is why do I need 2 separate house banks? This thought all started while trying to figure out the best way to keep the start battery charged in the off season. If I make one house bank, then I can use one of the old house bank battery switches to combine all batteries when needed. Doug Mountjoy sv Rebecca Leah C & C Landfall 39Port Orchard Yacht Club +1 253-208-1412
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