When searching for a trolling motor battery, buying a cheap battery may save you money up front, but is almost certain to cost more in the long run. Some novice anglers may think that they can power their trolling motor with an ordinary SLI-type car battery. The truth is, it’s not ideal to use a car battery. Using car batteries on a trolling motor will only destroy the motor and the battery. Car batteries cannot be recharged and be brought down on water levels over and over again. They’re just not designed that way. If you use car batteries, you may end up buying and installing three or four of them before a quality trolling motor batteries wears out. Marine batteries may also be considered to power a trolling motor. However, often times they are less expensive than the leading trolling battery brands or any trolling motor battery for that matter, which is also not ideal for high current and large distances. Trolling motor batteries are specifically designed for prolonged, harsh activity. Buying from the most competent brands ensures you spend less time recharging and more time fishing. If that’s what you’re looking for, always choose the right type of battery.
Buying A Trolling Motor Battery
As with buying a car battery, brand comes into play. Most anglers prefer higher end brands simply because these are usually high quality. The price tags of the leading brands can be daunting but again many consider it a necessity. As the saying goes, you get what you pay for… Always remember that it’s important to choose a high quality deep cycle design. They deliver optimum performance with constant discharge rate and lasts for longer periods of time compared to other types of batteries. When buying don’t forget to also consider the following factors:
- The Thrust of the Motor: A larger boat will obviously require more thrust, therefore a larger battery will be needed.
- The boat weight (pontoon boat trolling motor vs a center console vs bass boat etc.)
- The Fishing Conditions and the Fishing Style You Prefer.
- Warranty Coverage
- Vibration Resistance: especially if you frequently go out in choppy water.
Ideally, the best deep cycle trolling motor battery can last up to six years, as long as it’s not run completely dry repeatedly.
Why the Boat Size Matters
You may not think about your boat’s size, shape, or accessories when you first realize that you need to replace your battery, but it is very important that you do. The truth is, most people have a battery for their trolling motor and one for all other parts of it. A larger boat will need a larger motor to provide it with enough trust to go forward at a speed that is functional. If you want to go faster, you will need even more thrust. This thrust will need more power behind it. Therefore, a larger battery size will be required if you want it to function properly.
If your boat is heavier, it will also change the size of battery that you need. A heavier boat will need more to push it ahead. If either your motor or your battery falls short in any way, your boat will not be all that you wanted for it to be. It will be sluggish in the water and may cause you to waste most of your day out fishing; riding to a new spot.
Boat Accessories Require More Power
Each boat will have its own unique power needs. Boats may leave the factory with the same battery size, but what it needs after you add the accessories you want, will change things. For instance, if you have a pontoon boat, there are several accessories that you many boaters will add. Each of those accessories require more power. You may even end up with enough add-ons that you need to carry two or three batteries. The same may be true for console boats, which may have a larger, more powerful motor and more accessories from the factory. A kayak typically does not have any accessories, but you may want to add on a small trolling motor, which means you need minimal power from your battery. In this case you will be able to get away with a smaller, more cost-effective choice.
If you do not choose a battery size that can handle your GPS, aeration system, radios, flood lights, and other accessories, you will end up draining your battery each time you go out on the water. This will shorten the lifespan of your battery and may even cause you to end up stranded on the water, in a boat that has a dead battery, wishing you had a way back to shore.
Trolling Motor Battery Reviews
To give you a better idea of the batteries that are available and to help you choose the one that will be right for your boat, we have listed some of our most favorite battery options. They are all high quality, well reviewed marine batteries. They each offer different amounts of power so that you can easily compare your boat’s needs and what they have to offer.
This is the undisputed leading brand for trolling motor batteries. It’s a 12-volt deep cycle battery with 750 cold cranking amps. It only weighs 43.5 lbs so the weight issue that so many anglers are concerned about is covered in this model. At 10 inches by 6 7/8 inches and 7 13/16 inches tall, this model is a dual SAE and has posts that are 5/16 inches of stainless steel stud. This blue top battery has a reserve capacity of two hours, ideal for longer periods of trolling. It promises optimum performance even in tough weather conditions. It also promises fifteen times vibration resistance for durability.
This model is also dual-purpose, meaning it can be used both on deep cycle applications or starting applications. Its patented SPIRALCELL technology is an assurance that it has more running time, can be recharged fast, and it has longer life compared to marine batteries or any RV batteries. Optima batteries are tightly wounded to minimize plate movement and damages caused by rough conditions. It’s also spill-proof hence it is maintenance free as well as environmentally friendly. Finally, it has low self-discharge rate, which means it can sit for a year without being recharged. __________________________________________________________________________________________
At half the price, this deep cycle battery is a strong alternative to the Optima battery. From the most favored battery manufacturing company in the US, one can expect the best performance. This model is a 12-volt trolling motor battery with a 35 Amp hour. It is a great model for multiple applications. With removable handles, this battery can work in a variety of angles. It has robust plates that add to an extended life. The grid design is computer-generated which is why it can provide optimum high-power density. It’s sealed inside a thermally welded case forming a bond that prevents leakage. CON: It doesn’t have the same SPIRALCELL technology that the Optima battery technology has, which means it can be prone to damages caused by vibrations.
This is a marine battery, which means it is less expensive compared to the two batteries listed above. It’s a 12-volt deep cycle battery that promises longer and trouble-free time on the water. It weighs 53 pounds with 10 Amp hours. It’s also maintenance free as it is spill proof and leak proof. It’s a battery that provides abundant power for quick and easy starting.
CON: As mentioned earlier, marine batteries may not charge as quickly as its counterparts designed specifically for trolling motors. Remember to buy a battery that can last for a longer time. Sometimes though, it is the manner of how you look after the battery product that makes it last longer and perform stronger.
The Mighty Max is a 12V 35Ah Sealed Lead Acid battery that is rechargeable and maintenance free. It measures in at 7.68 x 5.16 x 7.13 inches. It is designed to handle deep discharges and a broad range of temperatures. It does not come with a wire harness or mounting accessories, but it can be mounted in any position. It resists shocks and vibrations much like the Optima battery. As to the warranty, you will receive a 30-day full refund and a full 1-year warranty. Most people never have issues with this affordable battery and it holds a 4.3-star rating to prove its reliability on trolling motor boats.
This battery is designed to work with a motor that has between 18-35 pound thrust. It has heavy duty lead tin alloys to ensure high performance and extended service life, even after repeated discharges. It is maintenance free, so you do not have to add water or check the electrolytes. This battery is also able to recharge quickly, especially if you use the recommended VMAX 3.3amp charger. It measures in at 7.7 x 5 x 6.1 inches and 25 pounds.
More Trolling Motor Battery Options: