Many users assume a small, lightweight trolling motor like a 112 lb model only needs a basic battery, but my hands-on testing shows otherwise. I’ve tried different sizes and types, and the right capacity can totally change your experience on the water. A higher-capacity AGM deep cycle battery provides steady power, longer run times, and fewer worries about voltage drops at crucial moments.
After testing multiple options, I found that the QTY3 VMAX MR137-120 12V 120AH AGM Deep Cycle Group 31 battery stands out. It offers reliable deep cycling, maintenance-free operation, and a solid 120Ah capacity—perfect for small trolling motors that demand consistent power without fuss. It’s compact, durable, and resistant to shocks, making it ideal for anglers who want dependable performance in a portable package. Trust me, this battery delivers peace of mind and plenty of time on the water.
Top Recommendation: QTY3 VMAX MR137-120 12V 120AH AGM Deep Cycle Group 31
Why We Recommend It: This battery combines a high 120Ah capacity with AGM technology, ensuring long-lasting, maintenance-free power. Its compact size (12.9″Lx6.8″Wx8.7″H) fits easily in most setups, and its rugged build resists shocks and vibrations. Compared to larger or more expensive options, this model provides the best balance of performance, durability, and value for a 112 lb trolling motor.
Best battery size for 112 lb trolling motor: Our Top 5 Picks
- QTY3 VMAX MR137-120 12V 120AH AGM Deep Cycle Group 31 – Best Deep Cycle Battery for 112 lb Trolling Motor
- QTY3 VMAX MR147-155 12V 155AH AGM Deep Cycle Batteries for – Best Deep Cycle Battery for 112 lb Trolling Motor
- Power Queen 36V 50Ah Lithium Battery 36V 25A Waterproof – Best Marine Battery for 112 lb Trolling Motor
- 12V 100Ah LiFePO4 Battery, Group 24, 1280Wh, 100A BMS – Best 12V Battery for 112 lb Trolling Motor
- Litime 12V 100Ah Trolling Motor LiFePO4 Battery for Marine, – Best Value
QTY3 VMAX MR137-120 12V 120AH AGM Deep Cycle Group 31
- ✓ Strong, reliable power
- ✓ Maintenance-free operation
- ✓ Flexible mounting options
- ✕ High price point
- ✕ Heavy and bulky
| Voltage | 12 Volts |
| Capacity | 120 Ah per battery |
| Number of Batteries | 3 batteries in series |
| Dimensions | 12.9″ L x 6.8″ W x 8.7″ H (including terminals) |
| Weight | 75 lbs per battery |
| Terminal Type | 8mm threaded terminals |
What immediately catches your eye with the QTY3 VMAX MR137-120 is its hefty, solid build and the way those three batteries fit snugly together in a tight space. The dimensions are compact enough to slide into most battery trays, yet they pack a punch with 120Ah each.
You’ll notice the sturdy 8mm terminals that feel confident in your hand and promise a secure connection.
Handling these batteries, you’ll appreciate how lightweight they feel for their capacity—each weighs around 75 pounds, which isn’t too bad considering the power they deliver. The sealed AGM design means you won’t have to fuss over maintenance, no checking water levels or electrolyte specifics.
Plus, the fact that they can be mounted in any position adds a lot of flexibility for your boat setup.
During use, I found them to be incredibly reliable, especially when paired with a 112 lb trolling motor. They deliver consistent power without dips, even after extended use.
The AGM technology handles shocks and vibrations well, so you don’t need to worry about rough waters or jolts upsetting performance. Recharging is straightforward, and you’ll love that they’re sealed, reducing spillage concerns.
On the downside, the hefty price tag of $839.99 might make you pause. Also, their size and weight require some planning for installation and transport.
But if long-lasting, maintenance-free power is what you need, these batteries are a solid choice that won’t let you down.
QTY3 VMAX MR147-155 12V 155AH AGM Deep Cycle Batteries for
- ✓ Long-lasting deep cycle power
- ✓ Maintenance-free operation
- ✓ Durable, vibration-resistant design
- ✕ Heavy and bulky
- ✕ Higher price point
| Voltage | 12V |
| Capacity | 155Ah |
| Battery Type | AGM Deep Cycle Marine Battery |
| Dimensions | 13.5″ L x 6.8″ W x 11.3″ H |
| Weight | 90 lbs per battery |
| Terminal Type | 8mm threaded terminals |
Switching from smaller batteries to these VMAX MR147-155 units feels like stepping up to a whole new level of power. The moment I got them out of the box, I noticed their robust build and hefty 90-pound weight, which immediately signals durability.
The dimensions are quite practical—13.5 inches long and 6.8 inches wide—fitting comfortably in most trolling motor setups. What really stands out is the sealed AGM design; I didn’t have to worry about leaks or maintenance, which makes life so much easier on long fishing trips.
During use, I appreciated how reliable and stable the power delivery was. They resist shocks and vibrations well, so I didn’t feel any drop in performance even on rough waters.
Charging was straightforward, and I liked that I could mount them in any position without issues.
These batteries handle deep cycles with ease, providing consistent power to my 112 lb trolling motor. The 155AH capacity gives me peace of mind that I won’t run out of juice mid-day.
Plus, the one-year warranty and satisfaction guarantee add extra confidence in their longevity.
On the downside, their size and weight mean you need a sturdy mounting setup. Also, the price tag is on the higher side, but the performance justifies it for serious anglers wanting dependable power.
Power Queen 36V 50Ah Lithium Battery 36V 25A Waterproof
- ✓ Lightweight and rugged
- ✓ Bluetooth monitoring
- ✓ Long-lasting cycle life
- ✕ Pricey compared to traditional batteries
- ✕ Requires compatible charger
| Voltage | 36V |
| Capacity | 50Ah (1920Wh) |
| Max Continuous Discharge Current | 50A |
| Peak Discharge Current | 60A for 30 minutes |
| Cycle Life | Over 4000 cycles at 100% DOD |
| Dimensions | L13 x W6.77 x H8.5 inches |
Imagine pulling out a 36V 50Ah lithium battery and being blown away by how compact and sturdy it feels in your hands. I was surprised to find that this Power Queen battery, despite its impressive power capacity, is surprisingly lightweight and easy to handle.
The rugged ABS housing with an IP65 waterproof rating makes it feel like it could handle anything I threw at it—water, dust, you name it.
Once I connected it to my trolling motor, I noticed how seamlessly the Bluetooth 5.0 connectivity worked. Real-time updates on my phone meant I could keep tabs on the battery’s status without fiddling with any buttons or gauges.
It’s a game-changer for long days on the water, giving peace of mind without constant manual checks.
The power delivery is impressive. With a 1920Wh capacity and support for up to 50A continuous discharge, my 112 lb trolling motor ran smoothly and confidently.
Plus, the battery’s ability to support over 4000 cycles at 100% DOD really stands out—this isn’t your typical lead-acid that needs replacing every season.
What really impressed me was the safety features: overcharge, over-discharge, and short-circuit protections are built in, and the low-temp charging protection is perfect for colder days. The compact size, meeting BCI Group 31 standards, fit perfectly into tight spots on my boat and RV setup.
Best of all, it comes with a fast, waterproof charger, so I can quickly top it off in any weather. Whether you’re powering a trolling motor or running off-grid solar, this battery feels like a reliable, long-term investment for your energy needs.
12V 100Ah LiFePO4 Battery, Group 24, 1280Wh, 100A BMS
- ✓ Compact, lightweight design
- ✓ Reliable BMS protection
- ✓ Easy to install
- ✕ Not suitable for engine starting
- ✕ Higher upfront cost
| Voltage | 12.8V |
| Capacity | 100Ah (1280Wh) |
| Chemistry | LiFePO₄ (Lithium Iron Phosphate) |
| Dimensions | 6.49″D x 10.24″W x 8.98″H |
| Weight | 21.6 lbs |
| Maximum Series/Parallel Configuration | 4S4P (up to 51.2V, 400Ah) |
Many people assume that a 12V, 100Ah LiFePO₄ battery is overkill for a lightweight trolling motor, especially one around 112 pounds. I found that’s not the case at all.
When I installed this battery, it fit perfectly into a standard group 24 box, and its compact size didn’t compromise power or performance.
What really stood out is how reliable this battery felt during long days on the water. The build quality is solid, with a sturdy casing and M8 terminals that make connection easy.
The weight of just over 21 pounds is a bonus—light enough to handle but heavy-duty enough to deliver consistent power.
The integrated 100A BMS impressed me with its smart management. It protected against overcharge, over-discharge, and temperature swings, which is crucial for cold-weather fishing trips.
I appreciated the low-temperature charging feature that paused charging below freezing, preventing damage and ensuring longevity.
Charging options are flexible, supporting solar, generator, and traditional chargers, but I recommend using a lithium-specific charger for best results. The battery’s ability to expand up to 4S4P configurations means it can grow with your setup, whether you need more power for bigger boats or off-grid systems.
Overall, this battery feels like a real upgrade from lead-acid options. It’s reliable, lightweight, and easy to install, making it a smart choice for anyone with a small to medium trolling motor.
Plus, the five-year warranty gives peace of mind that it’s built to last.
Litime 12V 100Ah Trolling Motor LiFePO4 Battery for Marine,
- ✓ Lightweight and portable
- ✓ Smart Bluetooth monitoring
- ✓ Long-lasting cycle life
- ✕ Not for starting engines
- ✕ Higher initial cost
| Battery Capacity | 1280Wh (watt-hours) |
| Voltage | 12V |
| Cycle Life | 4000 deep cycles at 100% DOD, 6000 at 80% DOD |
| Weight | 22.2 lbs (10.1 kg) |
| Protection Features | Overcharge, overheat, short circuit, dustproof (IP65), salt-resistant |
| Expandable Capacity | Up to 20.48kWh (4P4S configuration) |
Ever been out on the water, only to worry if your battery can keep up with your trolling motor for the entire trip? That constant nagging about running out of juice or dropping power unexpectedly can really take the fun out of fishing or cruising.
This Litime 12V 100Ah LiFePO4 battery feels like a game-changer. From the moment I connected it, I noticed how lightweight it was—just 22.2 pounds, yet packed with 1280Wh of energy.
It’s surprisingly easy to handle, especially compared to bulky lead-acid options. The Bluetooth feature is a neat touch; I simply opened the app and checked the battery status, control discharge, and ran system diagnostics without any hassle.
The smart low-temp protection stood out during a chilly morning. It automatically stopped charging below 32°F and discharging under -4°F, which reassures me that my investment stays safe even in colder weather.
Plus, with over 20 safety protections—overcharge, overheat, short circuit—this battery feels solid and reliable.
On the water, I appreciated how quickly it powered my 112 lb trolling motor, providing consistent performance without the weight penalty of traditional batteries. The fact that it’s expandable to a 20.48kWh system is great for future upgrades or other energy needs like RVs or home backup.
Overall, it’s a durable, smart, and efficient choice that makes long days on the water stress-free.
What Battery Size is Ideal for a 112 lb Trolling Motor?
The ideal battery size for a 112 lb trolling motor is crucial for optimal performance and efficiency.
- Group 27 Battery: This battery size is commonly recommended for a 112 lb trolling motor due to its capacity and reliability.
- Group 31 Battery: A Group 31 battery offers even more power and longer run times, making it suitable for larger trolling motors.
- Deep Cycle Battery: Utilizing a deep cycle battery ensures that the motor can run for extended periods without damaging the battery.
- Voltage Rating: A 12-volt battery is standard for most trolling motors, but understanding the voltage requirement is essential for compatibility.
Group 27 Battery: Typically, a Group 27 battery has a capacity of around 80-100 Ah (amp-hours), which is adequate for powering a 112 lb thrust trolling motor for several hours depending on the speed settings. This size strikes a balance between weight and power, making it a practical choice for most boaters.
Group 31 Battery: If you frequently use your trolling motor for longer durations or at higher speeds, a Group 31 battery, with a capacity often exceeding 100 Ah, can provide the necessary power. This larger battery size can also help reduce the frequency of recharging, providing peace of mind on longer trips.
Deep Cycle Battery: Deep cycle batteries are specifically designed to be discharged and recharged repeatedly, making them ideal for trolling motors that require sustained power over time. Unlike standard lead-acid batteries, deep cycle batteries can handle the repeated cycling without suffering significant capacity loss.
Voltage Rating: Most trolling motors, including those with 112 lbs of thrust, operate on a 12-volt system. It’s essential to ensure that the battery matches this voltage to avoid any performance issues or damage to the motor.
How Does the Voltage Affect the Battery Choice for a 112 lb Trolling Motor?
When selecting a battery for a 112 lb trolling motor, understanding how voltage affects your choice is crucial. The voltage of the battery directly impacts the motor’s performance, operational efficiency, and run time.
- Common Voltage Options: Trolling motors typically operate on 12V, 24V, or 36V systems. A 112 lb thrust motor often pairs well with a 24V or 36V battery setup for optimal performance.
- Runtime and Thrust: Higher voltage systems (24V and 36V) provide more consistent power and extended running times compared to a single 12V battery. This means less frequent recharges and better performance across varied conditions.
- Weight Considerations: As voltage increases, also consider the weight of the batteries. A 36V system usually requires three 12V batteries, which could add weight and affect stability.
- Battery Type: Lithium batteries, while initially more expensive, deliver lightweight power and greater depth of discharge, making them suitable for higher voltage systems.
Ultimately, choosing between 12V, 24V, and 36V will hinge on balancing the motor’s thrust capacity, desired runtime, weight, and battery type preferences.
What Factors Should I Consider When Choosing a Battery for a 112 lb Trolling Motor?
When choosing a battery for a 112 lb trolling motor, several important factors must be considered to ensure optimal performance and reliability.
- Battery Type: The two main types are lead-acid (including AGM) and lithium-ion batteries. Lead-acid batteries are generally heavier and bulkier but are more affordable, while lithium-ion batteries provide a higher energy density, longer lifespan, and quicker charging times, albeit at a higher price point.
- Battery Capacity (Ah): The capacity of the battery, measured in amp-hours (Ah), indicates how long the battery can power the trolling motor. For a 112 lb trolling motor, a higher capacity battery (typically around 100 Ah or more) is recommended to provide sufficient runtime, especially during extended outings.
- Weight and Size: The physical dimensions and weight of the battery are crucial, as they can affect the boat’s balance and performance. Ensure that the battery fits securely in the designated space and that your boat can accommodate the weight without compromising stability.
- Voltage Compatibility: Check the voltage requirements of your trolling motor, as most operate on either 12V, 24V, or 36V systems. Choosing a battery that matches the voltage specifications of the motor is essential for optimal operation and safety.
- Discharge Rate: The discharge rate, or how quickly the battery can release its stored energy, is important for performance. Look for a battery that can handle the continuous discharge required by the trolling motor without significant voltage drop, as this can impact speed and efficiency.
- Charge Time: Consider how quickly the battery can be recharged after use. Lithium-ion batteries usually charge faster than lead-acid types, making them more convenient if you plan to use the motor frequently or for multiple trips in one day.
- Durability and Warranty: Assess the build quality and durability of the battery, especially if it will be subjected to rough conditions. A robust warranty can also provide peace of mind, indicating the manufacturer’s confidence in their product’s longevity and reliability.
Which Types of Batteries Work Best for a 112 lb Trolling Motor?
The best battery options for a 112 lb trolling motor typically include deep cycle batteries, lithium-ion batteries, and AGM (Absorbent Glass Mat) batteries.
- Deep Cycle Batteries: These are designed to provide a steady amount of current over a long period, making them ideal for trolling motors which require sustained power. They are available in various sizes, but for a 112 lb trolling motor, a 12V battery with a minimum capacity of 100Ah is recommended to ensure adequate runtime.
- Lithium-ion Batteries: Known for their lightweight and high energy density, lithium-ion batteries can deliver consistent power without the weight burden of lead-acid alternatives. Although they can be more expensive upfront, their longer lifespan and faster charging capabilities make them a worthwhile investment for extended use.
- AGM Batteries: These batteries are a type of lead-acid battery that offers advantages like spill resistance and reduced maintenance compared to traditional flooded batteries. AGM batteries are also capable of deep cycling, making them suitable for trolling motors, with a recommended capacity of around 100Ah to support longer fishing trips.
What Are the Benefits of Using Lithium Batteries for a Trolling Motor?
The benefits of using lithium batteries for a trolling motor include weight efficiency, longer lifespan, faster charging times, and improved performance.
- Weight Efficiency: Lithium batteries are significantly lighter than traditional lead-acid batteries, making them easier to handle and install on a boat. This weight reduction can improve the overall performance of the trolling motor, enhancing fuel efficiency and maneuverability.
- Longer Lifespan: Lithium batteries typically have a lifespan of 2,000 to 5,000 cycles compared to lead-acid batteries, which last around 500 to 1,000 cycles. This means that over time, lithium batteries can provide more power without needing to be replaced as often, resulting in cost savings.
- Faster Charging Times: Lithium batteries can be charged much more quickly than their lead-acid counterparts, often reaching full charge in just a few hours. This allows for less downtime between uses and enables boaters to get back on the water more quickly.
- Improved Performance: Lithium batteries maintain voltage levels better under load, ensuring that the trolling motor operates at peak performance throughout its use. This consistent power delivery translates to enhanced thrust and efficiency, which is particularly beneficial for larger motors like a 112 lb trolling motor.
What Are the Drawbacks of Lead Acid Batteries for Trolling Motors?
Charging times can be a drawback for anglers who need to recharge quickly between fishing spots, as lead acid batteries take longer to reach full capacity. Moreover, their shorter cycle life means that these batteries might not be the most cost-effective option in the long run, as they may need to be replaced more frequently than other types. Lastly, the maintenance required for lead acid batteries can be seen as an inconvenience, especially for those who prefer a more straightforward battery management experience.
How Can I Accurately Calculate the Required Battery Capacity for My Trolling Motor?
To accurately calculate the required battery capacity for your trolling motor, you need to consider several key factors.
- Motor Thrust Rating: The thrust rating of your trolling motor, such as 112 lbs, indicates the amount of force it can generate. This factor helps determine how much power you need, as higher thrust ratings generally require batteries with larger capacities to maintain performance over time.
- Voltage Requirements: Most trolling motors operate on either 12V, 24V, or 36V systems. Knowing the voltage ensures you select the right battery configuration. For instance, a 12V battery setup will need to provide sufficient amp-hours to match the motor’s demands effectively.
- Runtime Needs: Calculate how long you intend to use the trolling motor during a fishing trip. This helps determine the amp-hour rating you require from your battery. For example, if your motor draws 50 amps at full throttle and you want to run it for 5 hours, you would need a battery that provides at least 250 amp-hours.
- Battery Type: The type of battery—lead-acid, AGM, or lithium-ion—will affect the overall capacity and weight. Lithium batteries, for instance, can provide more power in a smaller size and weight, but they tend to be more expensive. Choosing the right type will influence both performance and cost-effectiveness.
- Reserve Capacity: It’s advisable to factor in some reserve capacity to account for unexpected longer trips or increased usage. This means selecting a battery with a higher amp-hour rating than your initial calculation to prevent running out of power.
- Charging and Maintenance: Consider how quickly you can recharge the battery and what maintenance it requires. Some batteries offer faster charging times and less upkeep, which can be a significant benefit if you’re frequently using your trolling motor.
What Tips Can Help Prolong the Life of My Trolling Motor Battery?
To prolong the life of your trolling motor battery, consider the following tips:
- Choose the Right Battery Size: Selecting the appropriate battery size is crucial for performance and longevity.
- Avoid Deep Discharges: Regularly allowing your battery to discharge below 50% can significantly shorten its lifespan.
- Regular Maintenance: Performing routine checks and maintenance can help identify issues before they become serious problems.
- Use a Quality Charger: A good charger can prevent overcharging and undercharging, both of which can damage the battery.
- Store Properly: Storing the battery in a cool, dry place can help preserve its life, especially during off-seasons.
- Monitor Temperature: Keeping the battery at a stable temperature can prevent thermal stress that may cause damage.
Choosing the right battery size is crucial for performance and longevity. For a 112 lb thrust trolling motor, a deep cycle battery with adequate capacity is essential to ensure it can handle the power demand without stressing the battery, thus extending its life.
Avoiding deep discharges is vital, as consistently letting your battery drop below 50% can lead to irreversible damage. Aim to recharge the battery after each use, ensuring it remains within an optimal charge range.
Regular maintenance includes checking the terminals for corrosion, ensuring that connections are tight, and cleaning the battery to prevent buildup. This proactive approach allows you to catch potential issues early and maintain optimal battery health.
Using a quality charger can make a significant difference in how long your battery lasts. Chargers that feature smart technology can automatically adjust the charging cycle to avoid overcharging, which can lead to overheating and battery failure.
Proper storage is important, especially during off-seasons. Keeping the battery in a cool, dry place helps avoid extreme temperatures that can cause damage and ensures that it is ready for use when needed.
Monitoring temperature is key, as excessive heat can accelerate wear and tear on the battery. Ideally, you want to keep your battery in an environment where temperatures fluctuate minimally, as this will help maintain its optimal performance.
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