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  1. #1
    Member
    Join Date
    Dec 2017
    Location
    Estill Springs, Tennessee
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    83

    Question Lithium Cranking Battery - 2003 Johnson 150HP Outboard

    I am currently using a AGM 31 series battery for my cranking battery, and to run all my electronics. I also use two (2) AGM 31 Series batteries for my Minn Kota, Ultrex 24V trolling motor. All batteries are charged using an onboard, 3-bank battery charger.

    Can I upgrade to a Lithium cranking battery on a 2003 Johnson 150HP outboard, Model# J150GLSTF, without damaging the motor?

  2. Member
    Join Date
    Sep 2021
    Location
    Salem, wi
    Posts
    304
    #2
    Recommend you make a search on this topic in this forum. The topic has been discussed and reviewed several times already - even in the last 4-5 months. No specific problems were noted with current users. BRP states the Evinrude charging system is designed for lead-acid batteries. Follow the battery makers recommendations on charging requirements.

  3. SC Club Moderator ChampioNman's Avatar
    Join Date
    May 2004
    Location
    Crawfordville, FL/Lake Hartwell, SC
    Posts
    71,296
    #3
    Especially the charging system on the carb motors, they only put out 35 AMPs max not a lot of power for a Lithium system.