1 acr for 2 batteries?

[sailalibi]

Anyone see a problem with charging 2 12v batteries (a start battery and a windlass battery) in parallel with a single acr?

[smac999]

that is what it's for.

the cable between them still needs to be enough to run the full power of the windlass though. as lots of amps will still come from the house battery as it runs.

vrs if you used an echo charger instead. you can run a smaller cable since the max is 15a. it will just take a bit longer to charge once the windlass has stoped.

[Maine Sail]

Originally Posted by sailalibi

Anyone see a problem with charging 2 12v batteries (a start battery and a windlass battery) in parallel with a single acr?

Tough to make out the actual question but an ACR is designed to charge one battery from another battery. It is not designed to charge two banks where neither bank has a charge source charging it.

If your start battery has a charging source, then you can charge the windlass battery with the ACR.

If neither battery has a charging source then you'll need an ACR for each battery from which ever bank receives the charging, most likely the house bank.

The article below may help you understand how an ACR works:

Making Sense of Automatic Charging Relays






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