Powering your kayak trolling motor requires a battery that balances runtime, weight, and durability. The wrong choice can leave you stranded on the water, cutting your fishing trip short. Selecting the correct marine battery is critical for ensuring a full day of quiet, electric-powered propulsion.
This roundup simplifies your search by highlighting eight excellent battery options. We’ve considered factors like battery chemistry, capacity, and specific features for kayak anglers. From lightweight AGM to advanced lithium, you’ll find a reliable power source to match your needs and keep you on the water longer.
Top Battery Picks for Your Kayak Trolling Motor
- Newport 12V50Ah Deep Cycle Heavy-Duty Marine Battery
- Newport Kayak Series 36lb Thrust Transom Mounted Saltwater Electric Trolling Motor
- Mighty Max Battery 12V 35AH Wilderness Tarpon 100 Kayak Trolling Motor Battery
- Timeusb 12V 50Ah Trolling Motor LiFePO4 Battery with Low-temp Protection
- ExpertPower 12v 33ah Rechargeable Deep Cycle Battery
- Mighty Max Battery ML35-12 – 12V 35AH U1 Deep Cycle AGM Battery
- VMAXTANKS VMAX SLR125 12V 125Ah AGM Deep Cycle Battery
- NOCO NLP30 12V 30Ah Lithium Deep Cycle Battery
Newport 12V50Ah Deep Cycle Heavy-Duty Marine Battery
For kayak anglers prioritizing a balance of power and portability, the Newport 12V50Ah battery is a strong contender. Its lightweight design, at just 32 pounds, makes transportation and installation significantly easier compared to heavier alternatives. This is a major benefit when loading gear into a kayak.
This battery is a sealed AGM (Absorbent Glass Mat) type, which means it is maintenance-free and leak-proof. You can install it in various positions without worry. It is specifically engineered to be compatible with trolling motors, providing reliable and consistent power for extended periods on the water.
Newport Kayak Series 36lb Thrust Transom Mounted Saltwater Electric Trolling Motor
While technically a motor, this Newport Kayak Series unit is included because it features a helpful LED battery indicator. This integrated feature allows you to monitor your battery’s charge level at a glance, helping you manage your power usage and avoid being caught off-guard by a low battery.
Constructed with a corrosion-resistant aluminum motor head and stainless-steel hardware, this motor is rated for use in saltwater environments. The 24-inch fiberglass shaft is durable and suitable for most kayaks, while the 8-speed control gives you precise handling over your vessel’s movement.
Mighty Max Battery 12V 35AH Wilderness Tarpon 100 Kayak Trolling Motor Battery
The Mighty Max 12V 35AH battery is a compact and reliable power source designed with kayaks in mind. Its sealed lead acid (SLA) construction is maintenance-free and spill-proof, making it a safe and simple choice for marine use. The UL certification provides an additional layer of quality assurance.
This battery is noted for its high discharge rate and ability to operate in a wide range of temperatures. Its relatively small footprint allows for easier placement within the tight confines of a kayak’s storage area, providing a good balance of capacity and size.
Timeusb 12V 50Ah Trolling Motor LiFePO4 Battery with Low-temp Protection
For those seeking modern lithium technology, the Timeusb LiFePO4 battery offers exceptional performance and longevity. It boasts a remarkable cycle life of over 15,000 cycles, which translates to many years of reliable service. The built-in 50A BMS provides comprehensive protection against overcharge, over-discharge, and short circuits.
A key feature for anglers in colder climates is the low-temperature protection, which prevents charging when temperatures drop below freezing to protect the battery’s health. With an IP65 waterproof rating, it is built to withstand the wet and humid conditions inherent to kayaking.
ExpertPower 12v 33ah Rechargeable Deep Cycle Battery
The ExpertPower EXP1233 is a trusted and highly-reviewed sealed lead acid battery. Its rugged construction and use of AGM technology make it a durable and dependable option for powering a trolling motor. This battery is designed to handle the repeated charging and discharging cycles that come with marine use.
This model operates effectively across a wide temperature range, ensuring consistent performance whether you’re on the water on a hot summer day or a cooler morning. It’s a solid, no-fuss choice for anglers who want a proven and reliable AGM battery.
Mighty Max Battery ML35-12 – 12V 35AH U1 Deep Cycle AGM Battery
Another reliable offering from Mighty Max, the ML35-12 is a U1 size AGM deep cycle battery. This form factor is common and often a good fit for kayak battery boxes and compartments. Its sealed and maintenance-free design eliminates the need for adding water or dealing with acid leaks.
This battery provides a solid 35Ah of capacity, suitable for shorter trips or smaller trolling motors. The AGM technology ensures a low self-discharge rate, meaning it will hold its charge longer when stored between uses, so it’s ready when you are.
VMAXTANKS VMAX SLR125 12V 125Ah AGM Deep Cycle Battery
If your primary need is maximum runtime, the VMAXTANKS SLR125 is a high-capacity powerhouse. With 125Ah, it offers significantly longer operation between charges compared to standard batteries. This is an ideal solution for anglers who plan long days on the water or who use their trolling motor almost continuously.
Be aware that this high capacity comes with increased size and weight. It is best suited for larger kayaks or those with ample storage space that can accommodate it. For those who need extended power, its AGM construction provides durable and maintenance-free performance.
NOCO NLP30 12V 30Ah Lithium Deep Cycle Battery
NOCO is a respected name in the battery industry, and their NLP30 model brings lithium power in a compact and lightweight package. Lithium batteries like this one are significantly lighter than their AGM counterparts with similar capacity, which is a major advantage for kayak weight management.
This battery offers the classic benefits of lithium technology, including a very long cycle life and minimal self-discharge. While its 30Ah capacity is on the lower end, its light weight and trusted brand reputation make it a compelling option for kayakers focused on minimizing load.
Buying Guide: How to Choose a Battery for Your Kayak Trolling Motor
Choosing the right battery for your kayak trolling motor isn’t just about run time; it’s about safety, weight, and getting back to the dock without a paddle. I’ve learned through trial and error that the battery is the heart of your electric setup. The first and most critical concept to understand is Amp-hours (Ah). Think of this as your fuel tank. A higher Ah rating means more capacity and a longer run time. For a full day on the water, I generally look for a battery with at least 100Ah, but you can get away with less for shorter trips or if you use the motor sparingly.
Next, you need to decide on battery chemistry. This is where the big trade-offs happen. Traditional lead-acid batteries, like the Absorbent Glass Mat (AGM) type, are affordable and reliable. They’re a solid, budget-friendly choice, but they are heavy. Lifting a 60-pound battery into a kayak is a chore. Lithium Iron Phosphate (LiFePO4) batteries are the modern favorite for a reason. They are incredibly lightweight, last much longer (in both daily run time and overall lifespan), and can be discharged almost completely without damage. The upfront cost is higher, but for me, the weight savings and peace of mind are almost always worth the investment.
Physical size and weight are non-negotiable considerations for kayak anglers. Every pound matters when you’re loading gear and balancing on the water. A compact, lightweight LiFePO4 battery is easier to secure and doesn’t eat up valuable storage space. You also need to think about how you’ll secure it. A battery box or a dedicated battery bag is essential to protect the terminals from short circuits and to keep the unit stable.
Finally, don’t overlook the charger. Using a charger that’s specifically designed for your battery’s chemistry is crucial for its health and longevity. A smart charger that can properly condition your battery will make it last for years. When looking at the 8 best battery options for long-lasting kayak trolling motors, I always check if a compatible charger is included or if it’s a separate purchase. Investing in a good battery and then skimping on the charger is a sure way to shorten its life. Your choice ultimately comes down to balancing your budget, your tolerance for weight, and how long you typically stay out on the water.
FAQ
What size battery do I need for my kayak trolling motor?
This depends on your motor’s thrust and how you fish. A good rule of thumb is to check your motor’s amp draw at its highest setting. If it draws 30 amps, a 100Ah battery would theoretically last about 3.3 hours at full throttle. Since you rarely run at full power, you can expect longer run times. For a full day of casual fishing, a 50Ah to 100Ah battery is a common range. It’s always better to have a little extra capacity than to run out of power.
Are lithium batteries really worth the extra cost for kayaking?
In my opinion, yes, especially for kayaks. The weight difference is dramatic. A 100Ah lithium battery can weigh around 25 pounds, while a similar lead-acid battery weighs over 60 pounds. That weight savings directly affects how your kayak handles and how easy it is to transport. Lithium batteries also last for thousands of cycles, meaning they’ll likely outlast several cheaper batteries, making them more cost-effective in the long run.
How should I store my trolling motor battery?
Always store your battery in a cool, dry place. For long-term storage, make sure it’s partially charged—around 50-80% is ideal for most chemistries. This is particularly important for lithium batteries. Avoid storing a fully discharged or a 100% charged battery for extended periods. If you have a lead-acid battery, you might need a maintenance charger to keep it from sulfating during the off-season.
Can I use a car battery for my trolling motor?
I strongly advise against it. Car starting batteries are designed to deliver a large burst of power for a short time, not the slow, steady discharge a trolling motor requires. Using one will quickly destroy the battery and leave you stranded. You need a deep cycle battery, which is built to be discharged and recharged repeatedly. When reviewing the 8 best battery options for long-lasting kayak trolling motors, you’ll notice they are all deep-cycle variants for this exact reason.
How do I know when my battery needs to be replaced?
The most obvious sign is a significant drop in run time. If a battery that used to last you all day now only lasts a few hours, it’s likely nearing the end of its life. You might also notice it takes much longer to charge or that the voltage drops very quickly under a light load. For a more precise check, a battery load tester can give you a clear picture of its health.