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Thread: Using dedicated deep cycle for cranking?

  1. #1
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    Default Using dedicated deep cycle for cranking?


    I have a nearly brand new group 27 deep cycle battery. The boat that I just bought needs a cranking battery. The deep cycle, according to the label has many more CCA than the minimum amount that 115 Yamaha calls for according to the owners manual. It also has a longer reserve than called for.

    So I'm not a batteryologist. Is there some reason that a DC battery should not be used as a cranking battery, which will be charged by the boat motor?

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    Put a good charge on it and run it.
    If you are not comfortable with that, you could give that battery to me!
    Sure, there is a difference in design and purpose, but it will work out just fine.
    Likes Aquadog LIKED above post

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    I hope not...I used my last one for 6 or 7 years. I now have a dual purpose for cranking.

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    CrappiePappy is offline Super Moderator - 2013 Man Of The Year * Crappie.com Supporter
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    Quote Originally Posted by crappiemax View Post
    I hope not...I used my last one for 6 or 7 years. .
    I hope not, either .... since I'm using a Everstart Marine Group 24 to start my 90hp Merc 2strk, and have been for the last 5yrs. Most times I don't run the big motor a "whole lot" in a days fishing, but when put on the charger it's either already charged back up or only takes a few minutes until it's at full charge. The charger is a MinnKota onboard w/10amps per lead.

    My motor recommends having 350CCA (465MCA) ... and this Everstart Marine G24 has 500 Cranking Amps.

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    I run deep cycles on my ski boat for years with zero issues. Need to change my cranking battery because of age and it will be deep cycle also.

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    sinkermaker is offline Crappie.com Legend * Crappie.com Supporter
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    I ran a deep cycle on my tracker because I had a anchormate tied into it. They are called a dual purpose because they will do both

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    Thanks for all the replies! Feel comfortable running it now that y'all shared your experiences.

    sinkermaker, this one isn't labelled as a dual purpose like many are, it's a straight up deep cycle trolling battery.

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    My DC cranking battery is 9 years old, sticker says '08.
    I reckon if it was going to do harm, I would know about it by now.
    Thanks FurFlyin thanked you for this post

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    Quote Originally Posted by FurFlyin View Post
    Thanks for all the replies! Feel comfortable running it now that y'all shared your experiences.

    sinkermaker, this one isn't labelled as a dual purpose like many are, it's a straight up deep cycle trolling battery.
    Here's what the "know it all internet" says about that :

    Can you use a deep cycle battery as a starting battery?


    deep-cycle batteries can be used for engine starting but starting batteries should not be used for deep-cycle applications. A deep-cycle battery may have less cranking amps per pound than a starting battery, but in most cases a deep-cycle battery is still more than adequate for the purpose of starting an engine.



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    Cane Pole is offline Crappie.com 2011 Man of the Year * Crappie.com Supporter
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    My lawn mower has more horsepower than my outboards(s).
    Member BS Pro-Staff and Billbob Pro-Staff
    Proud Member of Team Geezer... authorized by: billbob and "G"
    Likes crappiemax, "G" LIKED above post

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