Jump Starting Off Trolling Battery

[Bass Cat Boats]

They should do a fine job and just use a battery on either end of the trolling line. Not the jumper battery in the center of the loop.

[oldtimer57]

It might be difficult. But if you use jumper cables, assuming your primary battery is not flat, just low, then it ought to work.

[Dwayne]

I have loaned my (little homemade) jumper cables out on the water a couple of times. Works well to get their motors started. As BCB says, use end trolling motor battery.

[Jones TrollingMotor]

As long as you just jumping — not trying to run with the jumper cables connected — you can use any single battery. Start the motor then disconnect the cables. I have a battery selector switch on mine that I can turn the switch and select cranking battery, trolling battery, or both. Ive done this for a couple of reasons. First, if my cranking battery goes down, setting to both (battery 1 and battery 2) it will allow the outboard to “boost” off the trolling battery that “battery 2” is connected to (be sure and use the correct size cable for the ground connection to the cranking and the positive connection to the switch). In this instance, battery 2 for the switch must be the battery that carries the ground to the outboard so that the trolling motor ground and the cranking ground are common. Also, when set to both, it parallels the cranking with the trolling battery so I can use a 3 bank charger connected to each of the trolling batteries, set the switch to battery 1 and battery 2 and charge the paralled cranking also, allowing me to use a 3 bank charger to charge 4 batteries.John

[billius]

I jump started a 150 Black Max I had on a boat, many years ago, from one of my trolling motor batteries. It messed up my trim motor for some reason. Had to have it replaced. The guy who worked on the engine back then, told me I somehow must have gotten 24 volts into it. He told me to disconnect the trolling motor batteries from each other before jump starting. Is that something to consider now?

[Jones TrollingMotor]

billius wrote:I jump started a 150 Black Max I had on a boat, many years ago, from one of my trolling motor batteries. It messed up my trim motor for some reason. Had to have it replaced. The guy who worked on the engine back then, told me I somehow must have gotten 24 volts into it. He told me to disconnect the trolling motor batteries from each other before jump starting. Is that something to consider now? As long as you use the positive and negative of a single battery, you are OK

[Mainliner61]

Thanks for the replies. Sounds like I should be fine.

[1hoteyra]

can jump from + or – of any single battery. Only 12 V potential difference at that point.

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