What batteries are best for trolling motors?
Selecting the Best Trolling Motor Battery
Power your trolling motor with reliable and long-lasting deep cycle lithium batteries. Our trolling motor lithium-ion batteries are specially designed for marine environments, featuring premium Grade A certified cells and oversized BMS for optimal performance.
Dive into the world of LFP (Lithium Iron Phosphate) technology, offering 1/2 the weight, 4x the power, 5x the charging speed, and 10x the life cycle compared to AGM batteries. Experience unparalleled power, reliability, and extended runtime with our deep cycle lithium batteries.
Choosing the Right Voltage: 12V LiFePO₄ Lithium Batteries
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Diving Deep into Marine Battery Types for Trolling Motors
The first thing you’ll notice when selecting batteries is how many options are available and understanding the benefits and drawbacks of each. The Three most common marine batteries you’ll encounter are Flooded Lead Acid (sometimes called wet-cell), AGM or absorbed glass mat, and Lithium Iron Phosphate (LiFePO4).
Lead Acid Wet-Cell: The First Generation of Batteries
Lead acid batteries remain the most common deep cycle batteries for trolling motors. They can handle frequent draining and re-charging associated with trolling motor use and they are the most affordable option. Depending on quality, lead acid batteries will last between 2-3 years. These batteries can be purchased for less than $100 and are readily available in a variety retail outlets. The downside of lead acid batteries is that they can require occasional maintenance – topping off the water – and they are also prone to vibration and spillage.
AGM Batteries: The Maintenance-Free Option
AGM (Absorbed Glass Mat) Batteries are a type of lead acid battery that are completely sealed, generally last longer on a charge and typically have a longer life-span. While a traditional deep cycle battery might last approximately 2-3 years, an AGM deep cycle battery can last up to three or four years. AGM's *cost more than standard lead acid wet-cell batteries – up to 2x more – and may not be an option for those on a tight budget. While more expensive, they provide increased longevity and performance out on the water.
AGM's also have the added benefit of being 100% maintenance free.
Lithium Batteries: The Future of Trolling Motors
Lithium batteries are starting to become more and more popular for a variety of reasons:
1. Significantly longer run time - Almost 2x the run time compared to traditional lead acid and AGM batteries.
2. Extremely Lightweight - For the smaller boats and boats where weight can be a considerable factor, lithium batteries offer a 70% average reduction in weight compared to traditional batteries.
3. Longer Battery Life - Lithium batteries can last up to 10 years whereas lead acid wet-cell and AGM batteries have an average life span of 2-4 years. Even though there is a higher up-front cost for lithium batteries, they can save you money in the long run. If you calculate the cost of replacing your batteries every 2-3 years as opposed to every 10 years with lithium, you'll most likely be spending less on batteries when all is said and done.
4. 100% Depth of Discharge - This essentially means that you'll have full power regardless of the level of charge. Traditional batteries tend to lose power and capacity as their charge is depleted.
5. More Power - Due to the consistent, sudden fluctuation in speeds, trolling motors require a fair amount of cranking torque (aka thrust). Lithium batteries supply more power due to their negligible voltage drop when rapid acceleration is required.
Understanding Amperage Hour Rating
You can think of a battery's amperage hour rating as being similar to the gas tank of a car.
Everything else equal, a battery with a 115 amp hour rating will last longer than a 100 amp hour rated battery. In more technical terms, a 100 amp hour rated battery can deliver 100 amp hours of current to a trolling motor.
So if a motor was running at low speed and pulling 4 amps, the battery should last around 25 hours. (100 amp hour rating / 4 amps = 25 hours). Similarly, if the motor was running at top speed and pulling 40 amps, the battery would last for 2.5 hours (100 amp hour rating / 40 amps = 2.5 hours). For trolling motors use, we recommend a battery with AT LEAST a 100 amperage hour rating, a Group 27 rating and 175 minutes of Reserve Capacity (RC).
Essential Battery Tips for Prolonged Life
Never mix battery types, nor old batteries with new batteries.
Charge batteries as soon as possible after each use – leaving batteries in a discharged state will decrease their longevity and performance.
Periodically check wet-cell battery fluid levels and top-off as needed.
Check terminal connectors periodically for signs of corrosion – clean with a paste of baking soda and water.
Store batteries in a cool, dry place in the off-season and maintain a trickle charge.
Why Investing in a Quality Trolling Motor Battery Makes All the Difference
When it comes to marine adventures, the trolling motor battery you choose can either make or break your experience. Here's why investing in a top-notch trolling motor battery is a game-changer:
1- Extended Adventures: With a high-quality trolling motor battery, you can enjoy longer trips without the constant worry of running out of power. More time on the water means more memories made.
2- Cost-Efficiency in the Long Run: While the initial investment might seem steep, a durable and efficient trolling motor battery can save you from frequent replacements and unnecessary maintenance costs.
3- Eco-Friendly Cruising: Modern trolling motor batteries, especially lithium variants, are designed with the environment in mind. They offer cleaner energy, ensuring you leave a minimal carbon footprint during your marine escapades.
4- Consistent Power Delivery: Nothing beats the peace of mind that comes with knowing your battery will deliver consistent power, even in demanding conditions. This means smoother rides and optimal performance every time.
5- Safety First: Premium trolling motor batteries come with advanced safety features, ensuring protection against overcharging, overheating, and short circuits.
6- Space and Weight Efficiency: Modern batteries are designed to be compact and lightweight without compromising on power. This means easier handling, installation, and more space on your boat for other essentials.
In essence, while there are numerous options available in the market, a premium trolling motor battery is an investment in reliability, efficiency, and peace of mind. Ensure your marine adventures are powered by the best, and experience the difference firsthand.
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