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  1. #1
    bassmaster1234's Avatar
    bassmaster1234 Guest

    Default I have a 7.5 hp mercury outboa

    I have a 7.5 hp mercury outboard (1981) and I was wondering what size battery do I need? I was thinking in getting a dual purpose battery.

  2. #2
    Join Date
    Sep 2003
    Location
    New Tripoli, PA, USA!
    Posts
    12,448

    Default "A lawn mower sized one should

    "A lawn mower sized one should do the trick, but use a marine, deep cycle instead. Lots of power for lights and etc.

    Jeff"

  3. #3
    bassmaster1234's Avatar
    bassmaster1234 Guest

    Default I need to know what the cranki

    I need to know what the cranking amps should be? I can't get that big of a battery cause of weight issuses. I only have a 12' jon boat.

  4. #4
    Join Date
    Jan 2005
    Location
    Goteborg Sweden
    Posts
    117

    Default I would guess that a reasonabl

    I would guess that a reasonable sized motorcycle battery will do the job. Use a battery made for a bike with similar motor size as your outboard.
    5-10Ah would be enough?
    Robert

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