Q's on battery wire and battery chargers

Discussion in 'Power it up with Electronics' started by ducktrooper, May 28, 2010.

  1. ducktrooper

    ducktrooper Well-Known Member

    Hi guys....

    What thickness wire do I need to run a 55# TM from my battery, which is about 15' away in the bow? Will 8 ga work as well as 6 ga? Do I really need "marine" grade? It will run under the floor of my Riverhawk.

    Also, what kind of battery charger is best to optimize
    capacity when recharging. My battery is Costco Marine Deep Cycle, 27. I currently have the Schumacher charger with 2 AMP and 10 AMP settings and deep cycle switch but battery draws down pretty quickly.

    Thanks in advance.
  2. Brett

    Brett > PRO STAFF <

    popular questions



  3. ducktrooper

    ducktrooper Well-Known Member

    Thanks Brett...I'd like to hear from others on suggestions for an affordable 3-stage Smart Charger.
  4. tnrwayne

    tnrwayne I Love microskiff.com!

    See the PRO-MARINER chargers at www.tnrbattery.com
  5. TomFL

    TomFL Well-Known Member

    Been using a couple different pro-mariner (Cabela's house brand) chargers for a few years now and they are very good, no issues at all. Very simple to install too.

    I would not scrimp on the wire if you are close to being bumped up to the next wire size. You can find good quality wire pretty inexpensively here:

  6. rashouri87

    rashouri87 I Love microskiff.com!

    Your motor will draw about 1 amp per # thrust, so wire accordingly. my trolling motor uses 8ga wire but under the deck I used 12 ga wire which rates conservatively at 40 amps in air unbundled which is right for a 40# thrust motor. Make sure to put a breaker or fusebox close to the battery on the positive wire if not rigged in already. I just rigged in a 60 amp fuse and box today as per the minn kota's directions. even though thats a little more than the line is rated for, if the circuit shorts it'll jump amps fast enough to pop the fuse. I don't believe you'll have to worry about voltage drop over that short of a distance, but it may be something you'd like to account for. like tom said, don't skimp on the wiring if you're in doubt.
  7. TomFL

    TomFL Well-Known Member

    Don't forget that if you run the wire under the deck and it's wet under there, it'll act differently than dry wire.

    You should consider that when choosing wire gauge.

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