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Discussion in 'Classic Sea Rays' started by Drifter22ft, Jan 26, 2020.
With dual motors do you need to have a battery per motor or one battery for both
I would prefer at least one battery per engine. If one wont start hopefully the other one will. Add to that a crossover system and you can start /charge both batteries from one side or the other.
I had 2 golf cart batteries and 1 starting battery. The starting battery was dedicated to my generator. This worked great for anchoring out. I could get 18 hrs out of the house batteries before they needed to be charged. Start the genny and a few hours later we were good for another 18 hours. The longest we anchored out was 49 days went to the marina day 25 for a pump out then back to an other spot.
If you don't have a generator make sure you have two deep cycle starting batteries, don't scrimp on the quality good batteries are a must for even a day at anchor with the radio and fridge going.
3 batts would be best. One per motor and one house, all switched to each other. I have a single motor with 3 deep cycle batts, and switch between them all the time.
Just curious to the nature of your question...… My previous boat, 1988 300 Weekender the standard layout was 3 batteries.
That’s what it has but thinking about adding a 4 th but didn’t think I needed two for the engines
I have 4 batteries for 1 engine