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Best Battery for Trolling Motor: Introduction, Volts, and Replacement

Jan 28, 2021   Pageview:45

One of the hard to live things without equipment is a trolling motor, but getting the most out of it is challenging. Spring is coming, and it's essential to prepare your boat for fishing. The battery is the key to trolling engine success, including initial selection, maintenance, and charging.To maintain a continuous high power demand, a trolling engine needs a deep cycle battery. Ideally, you need to adjust your battery discharge to the power consumption of the trolling motor.?

Batteries for trolling motors are exclusively manufactured. The goal behind them is to supply electricity over a more extended period of time. Using a trolling motor battery to prevent battery failure is crucial for fishing trips to maintain the required amount of power. By comparison, car batteries are used to start the car or provide enough power to start the engine of the vehicle. It is vital to start the engine with marine batteries and then provide enough power to support the motor and devices connected to the boat.

What is the battery for trolling motor?

You would like to consider a few items in choosing trolling motor batteries: battery type, battery amperage time rating, and budget.

In the case of troll engines, two particular types of 12-volt deep-cycle batteries are recommended: Lead Acid Wet-Cell and AGM Batteries. Deep cycle batteries are designed to unload less power for a more extended period and recharge more regularly. Batteries with a deep cycle are a little different from conventional power sources. They are designed to give your trolling motor stable energy for a longer timeframe. When used with a trolling motor, they will provide exceptional performance. It depends on what you're looking for; the dual-purpose motor helps you to get the best of both worlds. If you are searching for a battery for your trolling engine that will last longer, check out the deep cycle batteries.

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Lead Acid Wet-Cell –?These batteries are prevalent and are the most affordable option for the regular draining and recharge of trolling engines. They last for one to two and a half years, are less than $100, and are very typical. The downside is that they can top up the water and also are vulnerable to vibration and spill.

AGM Batteries –?AGM Batteries, an abbreviation for Absorbed Glass Mat, is another more meaningful choice for consumers. AGM batteries are fully sealed, usually, last longer and have a longer service life. While a conventional deep-cycle battery could last for about two years, an AGM battery would typically last between 3 and 4 years. AGM costs higher than regular batteries (naturally twice as high) and might no longer be a choice for people on a tight budget. While costlier, AGM batteries offer unparalleled durability and water efficiency. They are also 100% maintenance-free.?

Battery Life Maximization

Keep these troll resolution and repair tips in mind to make your trolling engine's batteries last longer and perform better. The manufacturers of batteries and boats suggest that you refill your battery as quickly as possible after use. Batteries left under 12.4 volts are likely to form plum sulfates in the cells, which significantly affect their efficiency and lifespan.

It's a smart idea to use an off-season trickle charger to retain or recharge power through the battery every month. It will decrease efficiency and shorten life by allowing your battery to sit for a long time.

Drain your battery entirely and refill it as much as possible. Repeated partial release and recharge produces a stratification state, which means that the chemicals in the cells are out of balance. The battery's acid basin ultimately limits the unit's efficiency and life.

Allow your rechargeable battery to refresh. The recharge cycle generates a large amount of heat inside the cells, and the hot battery may cause damage or a complete failure immediately.

How many volts is trolling motor battery?

A majority of trolling motors are designed in models of either 12, 12/24, 24, or 36 volts. The higher the voltage, the more an engine will provide pounds of thrust. Going with a higher-voltage motor means you need more than one battery to run it off. For 24 volt motors, run at least two batteries, and 3 for 36-volt electric motors.

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How do you replace a trolling motor battery?

Replacements should be the same size, model, and manufacturer if required for all batteries of trolling motor systems. Maintain equal levels of age and use. Don't install more than six months old battery after a new one. Either substitute all-new batteries or use a well-used battery. Buying new batteries and "saving" them for later is a terrible idea.

Helpful Suggestions

It relies on how you want to use it to decide the right match for you when selecting a trolling motor battery. Such tips that are helpful include:

  • Charge batteries after every single use.

  • Store batteries in a cold, dark place to prevent it from draining out.

  • Prior to use, make sure to check for corrosion.

  • Never mix your batteries.

The power output of the trolling motor can be significantly reduced by corrosion. If you see rust forming on the battery's surface, a combination of water and baking soda can be used to easily clean it.


The correct charge affects the durability of your trolling motor battery more than any other aspect. Use a trickle loader to maintain a maximum charging during the whole season for better performance. For a more responsible use, charge your trolling motor battery regularly, save it in a clean container, and store it in a dry and temperature-controlled location. If you are worried about vibration or jostling that could harm the cells, you can consider purchasing a more robust AGM battery or use a hydrometer or voltmeter to properly test lead-acid wet cell batteries. Drain as much as possible when trolling by holding your speed low and steady and by staying calm in testy waters.

You will have consistent, hassle-free output from your trolling motor, season after season, by knowing energy usage requirements, taking good care of your battery, and exercising discretion during water usage.


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