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Dual Battery setup - DF175

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  • Dual Battery setup - DF175

    New member here, I have a Dusky Bay with a DF175. I re powered last year. Looking to add a 2nd battery. I will be purchasing the lead/harness to enable the dual charging from my outboard. My question is would I still need a battery switch. This boat will never go more then 3 miles out. I always used the Perko 1/2/both switches on my previous boats. If i did use a switch would something like the Blues Seas double pole 5511e work for my application or should I not bother. I actually have the add a battery kit from Blues seas that includes that switch with a ACR. I put it up for sale when I ordered my charging lead from my dealer because I wasn't going to use it. I'm thinking this is what I need minus the ACR so I may keep it. If you all know of any wiring diagrams, that would also be useful. Thanks much for you input and guidance.

  • #2
    I use a Blue Seas 5511e on my boat. One start battery and one house battery, or both to start the motor if ever needed. I like it better than the Perko you describe that originally came on the boat.
    Last edited by Harper; Yesterday, 01:07 AM.
    Mike
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    • #3
      I'm adding to my reply, because as I read it, I find that I didn't really answer your question. So..... yes, you do need a battery switch. The reason that I would opt for the Blue Seas over the Perko is that with the Perko switch you describe, you can only use one battery at a time for ALL the boat (i.e. starter, instruments. lights, etc). And though you can still use them both for starting if needed, you are still running both your motor and house devices off the same battery at any given time.

      With the Blue Seas 5511e, you separate the batteries, using one solely as the start battery, and the other solely as the house battery. If needed for starting, both are still available, as with the Perko, wired in parallel through the switch when in the "combine batteries" position.
      Mike
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