Why Is My 250 Outboard Boat Motor Battery Dragging?

May 6, 2022 7:44 pm Published by Leave your thoughts

It is common to find out that even the best deep cycle marine battery for trolling motor will sometimes stall. This means that a deep cycle boat battery may fail to start the engine even when there is nothing wrong with it, and it has all the necessary charge needed. This has always been a challenging scenario that has faced many boat owners. However, you can eliminate this problem using the following procedure.

1. Ensure Your Battery Is Clean and Dry

The first strategy you can use to eliminate the problem of your trolling motor battery stalling is by ensuring that it is clean and dry. A clean and dry battery will always have a better chance of starting than one dirty or wet.

If your battery is dirty, you can clean it using a solution of baking soda and water. This approach effectively removes any grime or deposits that may be present on the battery’s surface. You can also use a toothbrush to scrub off any stubborn dirt.

Once you clean the battery, rinse it with clean water and dry it using a clean cloth. Again, it is crucial to ensure that the mortar is completely dry before proceeding to the next step.

2. Inspect the Battery for Broken Loose Terminals

Another reason why your trolling motor battery may be stalling is due to lose or broken terminals. This problem is common in batteries that have not been used for a while. To inspect the condition of your battery terminals, you will need to remove the battery from the boat. Once you have access to the battery, check the terminals for any signs of corrosion. If you notice any corrosion, you will need to clean the terminals using a wire brush.

After cleaning the battery terminals, you should inspect them for cracks or breaks. If you find any damage, you will need to replace the terminal. You can buy replacement terminals from your local hardware store.

3. Increase the Amount of Copper Carrying the Current

If you have ruled out the possibility of a loose or broken terminal as the cause of your battery stalling, you should check the amount of copper carrying the current. It is possible that the problem lies in the wiring and not the battery itself. To check the amount of current flowing through the wires, you must use a multimeter.

Start by disconnecting the positive terminal of the battery. Once the terminal is disconnected, touch the multimeter’s leads to the end of the wire. If the reading on the multimeter is below 12 volts, there is a problem with the amount of current flowing through the wire. You will need to replace the wire with a thicker one.

4. Use a Thicker Lug and Larger Cable

Yet another reason why your trolling motor battery may be stalling is due to a loose or damaged connection. This problem is often caused by a lug that is too small or a too-thin cable. You will need to use a thicker lug and a larger cable to fix this problem.

You can buy a thicker lug from your local hardware store. When choosing a cable, you should opt for one that is at least ten gauges. This will ensure enough current flows through the cable to start the engine.


It’s common for the deep cycle marine battery to stall. However, by following the above strategies, you can eliminate this problem and ensure that your trolling motor battery starts the engine every time. Contact Texford Battery Co. for more information.

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