I was going to try my setup without alternator charging and then broke down and got a Victron Orion just for those times when we DO need some charging while driving at night or rainy weather. I took the isolator solenoid out, no longer needed, the lfp house and fla starter circuits are completely separated now. House gets 600w of solar on a mppt charger, a new converter/charger for genset and shorepower, and soon I'll hook up the Orion for driving. As mentioned, a separate 100w solar panel for the chassis/starter bank for maintaining.
The problem with your two agm banks is self discharge in storage. If the boat spends a lot of time docked, plugged in or not, those batteries will lose their charge and sulfate over time. IMO you need a way to trickle them to keep them up, and either an onboard charger for each for shorepower, or a solar power setup is indicated. I think self discharge is less on AGM's, I've never worked with them, but still something to watch for. Plus any parasitic on the starter side - anything that stays on when the motor is shut off - bilge sniffer, LPG sensor, smoke alarm, etc.
The problem with lifepo4 is they just don't do very well with old FLA charging profiles. They really don't need to 'float', and they don't need to be constantly fully charged. I even put a switched outlet in for my converter/charger unit, so it could be turn off when running the genset for AC, or plugged in to shorepower. Solar controller can also be shut down if not needed, say plugged in for an extended time, like sitting in a RV park long term.
We've looked at the new Beneteaus at the local shows and always liked them. I had a Catalina and an Oday in my former lifetime.
My old sailboat had a Mercedes 180D 4cyl diesel for auxiliary, and a 8D house battery. Mechanical refrigeration run off the motor, also with quite a lot of space for ice storage, and a diesel-fired cook stove with a cast iron top. It was a fun boat, fast too for a full keel, but I spent two summer vacations in a boat yard replacing rotted wooden planks in the hull. It was built in 1958 in Oregon, fir planking on oak frames, galvanized screw fasteners, canvas covered decks. Sold it before moving to California in 1992. Those old boats just don't do well in the dry climate here.
Prior to that I have a Edwin Monk designed cutter, also all wood, built by a shipwright for himself, on Lake Union in Seattle. Cute little boat, all bronze hardware, cedar planking with bronze fasters, teak decks and trim, volvo diesel aux. I restored that one and took it to wooden boat shows and festivals.
I built two other boats from scratch, a pram dingy and a 16' rowing and sailing skiff by Pete Culler. The latter when my oldest daughter was first born, she's 35 now.
The Mari-Mari on the cover of Nor'Wester magazine in the 60's. I have good pictures of her, but they're color prints - from before the digital age. So this is a picture of a black and white picture LOL.
This is our 'land yacht', and we have a 17' sport fisher with outboard.
The problem with your two agm banks is self discharge in storage. If the boat spends a lot of time docked, plugged in or not, those batteries will lose their charge and sulfate over time. IMO you need a way to trickle them to keep them up, and either an onboard charger for each for shorepower, or a solar power setup is indicated. I think self discharge is less on AGM's, I've never worked with them, but still something to watch for. Plus any parasitic on the starter side - anything that stays on when the motor is shut off - bilge sniffer, LPG sensor, smoke alarm, etc.
The problem with lifepo4 is they just don't do very well with old FLA charging profiles. They really don't need to 'float', and they don't need to be constantly fully charged. I even put a switched outlet in for my converter/charger unit, so it could be turn off when running the genset for AC, or plugged in to shorepower. Solar controller can also be shut down if not needed, say plugged in for an extended time, like sitting in a RV park long term.
We've looked at the new Beneteaus at the local shows and always liked them. I had a Catalina and an Oday in my former lifetime.
My old sailboat had a Mercedes 180D 4cyl diesel for auxiliary, and a 8D house battery. Mechanical refrigeration run off the motor, also with quite a lot of space for ice storage, and a diesel-fired cook stove with a cast iron top. It was a fun boat, fast too for a full keel, but I spent two summer vacations in a boat yard replacing rotted wooden planks in the hull. It was built in 1958 in Oregon, fir planking on oak frames, galvanized screw fasteners, canvas covered decks. Sold it before moving to California in 1992. Those old boats just don't do well in the dry climate here.
Prior to that I have a Edwin Monk designed cutter, also all wood, built by a shipwright for himself, on Lake Union in Seattle. Cute little boat, all bronze hardware, cedar planking with bronze fasters, teak decks and trim, volvo diesel aux. I restored that one and took it to wooden boat shows and festivals.
I built two other boats from scratch, a pram dingy and a 16' rowing and sailing skiff by Pete Culler. The latter when my oldest daughter was first born, she's 35 now.
The Mari-Mari on the cover of Nor'Wester magazine in the 60's. I have good pictures of her, but they're color prints - from before the digital age. So this is a picture of a black and white picture LOL.
This is our 'land yacht', and we have a 17' sport fisher with outboard.