6 thoughts on “what type of battery should I use for my trolling motor?

  1. Just a marine deep cycle running battery. The more you’re willing to lay down the better. A more expensive battery will get you more running time and more reserve time. Do be sure you don’t get a starting marine battery. I made this mistake one time by not paying attention and absolutely ruined the battery and it eventually was useless. I have always bought Super Thrust Batteries and have been happy with them.

    As for the charger, go with a trickle charger (preferrably a marine charger). BUT be careful before purchasing the charger. Be sure the charger is designed to shut off after the battery is fully charged. A lot of cheaper trickle chargers will constantly run and ruin your battery with time. Have a look at Cabelas.com and Basspro.com, they both have a nice selection. I don’t suggest buying a charger under 100 dollars. With 400 dollars you can get you both a nice charger and battery. Also, stear clear of the lower end Diehard chargers. I’ve had some bad experiences with them as far as functionality and with them lowering the life of my battery. They tend to “over charge” even though they’re supposed to shut off after a full charge.

  2. Get the heaviest duty deep cycle marine battery available in what ever brand you are buying. But as for the charger get one that has more of a capability then just able to trickle charge a battery.When you fish all day with a battery and plan on fishing the second day also, the trickle charger will not fully recharge your battery and you will run out of juice long before the day is over with.Get a charger that will have at least a 6 amp charging option on it.And an automatic cut off is an absolute necessity for the charger to have.

  3. You want a deep cycle battery. The largest you can get. Also you want a battery charger that is capable of charging your battery on as little as 2 amps.(trickle charge)

  4. buy a truck battery, one with a large CCA, number.
    I have found over the yrs a reg old truck[ heavy duty] battery will out last a Marine deep cycle any day. and there cheaper,

  5. Hi James-

    I’m not sure if you have 400 for each or together, but even if its together, that should be plenty for a quality battery and charger. first you should read this link http://www.ccis.com/home/mnemeth/12volt/12volt.htm

    Having done that, you will see that much of whats posted here is misinformation. so to straighten things out here are a few facts. Marine and deep cycle are two different things. They are made differently. go with the deep cycle, you can afford it.

    Read up for yourself on how amperage is rated and used, its all simple math and will eliminate hearsay. this will tell you how long a battery could be expected to work before recharging based on the draw, in this case its simple, usually the trolling motor, maybe a depth finder or other electronic instrument.. Once you determine what is acceptable, shop brands for the best price.

    The Charger: boy, people get contentious when talking chargers! Really its very simple, first, you have enough money to buy a three stage charger, here’s that info on trojans website at the bottom http://www.trojanbattery.com/BatteryMaintenance/ChargerSelection.aspx
    as you can see, your CHARGER should be based on what you’re CHARGING. Saying a charger should have “x” amount of amperage is irrelevant, the AH determines the amperage. furthermore, charging a battery too quickly doesn’t allow the electrolytes to “cook’ resulting in an uneven mix and a SHORTER battery life. There are all kinds of good stuff on this page to help you keep your battery in top shape for many years.

    Finally, here’s a few things that may help with your selection of battery. Marine/Deep cycle battery’s should never be discharged greater than 50%. True deep cycles at 80% these are industry standard recommendations. this is the problem with single stage or trickle chargers; they shut off before the battery is done charging. here’s the math; if you’re 90% full and your dod(depth of discharge) should only be 50%, then you’re shorting yourself 20%! SO you wouldn’t take off for a days fishing with a gas tank that’s 80% full, why do that to your battery? I know its tough for some people to understand, but that’s why the third stage in a three stage charger is called ‘float” it keeps your battery “topped off” if you will. Here’s a good three stage charger http://www.majorpower.com/xantrex/truecharge.html

    The point to all of this James, is that i’ve had much resistance fielding this specific question, which seems to come up often, and here’s the bottom line. If you had batteries last for six years, for example, and you felt that was plenty, then hooray for you. But if there was a way to extend, not only the duration of charge, but the overall life of the battery, don’t you think it would be worth it to examine the options?

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