Spurs Marine

CC/small boat Tuna fishing battery setup?

Old 07-09-2020, 03:10 PM
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Default CC/small boat Tuna fishing battery setup?

How many batteries are most boats running for the typical New England tuna fishing or any anchor fishing with the engine off?

Currently my boat has 1 engine and 1 house group 24 AGM, 1 starting battery with a blue seas ACR and Iím getting mixed signals when I talk to people and based on seeing it in action. Iím running livewell (dual pumps) for 6-10 hours, 1-2 VHFs, lights when running before sunrise, GPS/ff while running and want to keep FF on all day. The boat has 2 amps sucking the life out of the house battery not on a switch so I am going to disconnect this weekend. Once I have the amps off, should 1 house battery be enough to run an 8-10 hour day with 4-6 hours of the engine off? The blue seas ACR isnít keeping up with the house charge with current setup but need to test when the amps are disabled. Curious on thoughts if I should add a second AGM in parallel for the house load to extend the life and be able to have electronics while the engines off all day and not play with combining batteries to run the FF/livewell due to not wanting to run down the starting battery so I can get home.

Current house battery is brand new this year and was just charged/load tested a couple weeks prior to the first tuna trip and all was good with it (same for the starting). Thanks in advance
Old 07-09-2020, 04:43 PM
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How far out are you planning on tuna fishing?

I wouldnít be running anything on a single battery for 8-10 hours regardless. Your asking for trouble.
Old 07-09-2020, 04:52 PM
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Marinas 6.6NM from mouth of river then another 10-20NM from there depending on day/conditions. When I did it last weekend I started the livewell about 530am while catching bait, got to the grounds and setup/shut engines off around 7am. Left the grounds around 1pm.

House battery got to the point where I had to shut off (or boat shut it off for me), everything including radios/livewell pumps unless I combined batteries only thing that always had power was bilge pumps. When I did that I started the engine as I was trying to avoid draining the starting battery. Iím thinking the combo of removing the amps or at least running them to a switch that I can shut them off (I rarely use the stereo it just came with the boat) and adding a second house in parallel should run electronics without issue but Iím still learning electrical I suck at it now so trying to figure out best options/right thing to do. The ACR I have does not seem to be able to recharge house but always keeps starting battery full.

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