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Old 09-02-2018, 16:59   #31
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Re: One alternator, solar panels, and 2 banks

That's how my boat is setup too. Originally, the previous owner had a 12v relay that combined house + start when engine key is on. I thought this was a terrible idea, so I removed the relay. My Heart charger/inverter has an "echo charge". I wired that up and thought I had it figured out. Under shore power, this was fine; when motoring, I thought I could switch the A/B switch to both to charge the start battery -- I never did.

After adding a few solar panels, I decided to revisit this wiring. Now alternator and solar go to house. I added Yandina relay to charge the start. I don't have to worry about A/B switch, just leave it on house.

This is probably the simplest and most fool-proof wiring that I can think of. It makes sense.

Good luck
Don
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Old 09-02-2018, 20:37   #32
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Re: One alternator, solar panels, and 2 banks

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Originally Posted by Mike OReilly View Post
Is an echo charger the same thing as an ACR?
Mike,

What are ACRs, Combiners & Echo Chargers? (by Maine Sail) [scroll to the top]
http://forums.catalina.sailboatowner...d.php?p=742417 and Battery isolator / voltage regulator / batteries
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Old 09-02-2018, 22:22   #33
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Re: One alternator, solar panels, and 2 banks

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Originally Posted by Stu Jackson View Post
Mike,

What are ACRs, Combiners & Echo Chargers? (by Maine Sail) [scroll to the top]
http://forums.catalina.sailboatowner...d.php?p=742417 and Battery isolator / voltage regulator / batteries
Thanks Stu, I think Iíve got it now. Both ACR and echo chargers are similar. In the context of this discussion they can be used in near-identical ways, but the echo charger is somewhat more managed or controlled in its transfer of amps from the main bank to the secondary.

Interesting how Mainsail dismisses the need for a dedicated starter battery. Iíve always viewed protecting the starter battery as key to a good nightís sleep. My current setup includes two banks consisting of a 320 amp-hr deep cycle bank (house), and a single starter battery used solely to start the engine. They are managed through my three-way switch, but the only time they are combined is when Iím charging with lots of input amps flowing (from alternator or solar/wind).
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Old 10-02-2018, 03:03   #34
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Re: One alternator, solar panels, and 2 banks

Quote:
Originally Posted by Capt.Don View Post
That's how my boat is setup too. Originally, the previous owner had a 12v relay that combined house + start when engine key is on. I thought this was a terrible idea, so I removed the relay. My Heart charger/inverter has an "echo charge". I wired that up and thought I had it figured out. Under shore power, this was fine; when motoring, I thought I could switch the A/B switch to both to charge the start battery -- I never did.

After adding a few solar panels, I decided to revisit this wiring. Now alternator and solar go to house. I added Yandina relay to charge the start. I don't have to worry about A/B switch, just leave it on house.

This is probably the simplest and most fool-proof wiring that I can think of. It makes sense.

Good luck
Don
Yes ! Thanks, that's exactly what I'm shooting for.
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