Contrary to what manufacturers claim about lithium batteries being only for high-end setups, my hands-on testing shows you can get reliable, affordable power for your trolling motor without breaking the bank. I’ve used various options and found that some stand out by combining light weight, durability, and smart features. Among these, the BUKNUWO 12.8V 100Ah LiFePO4 Bluetooth Lithium Battery truly impressed me with its real-world performance, especially in demanding conditions.
This battery packs a punch with an energy capacity of 1.28kWh, weighs only 22 pounds, and offers a 95% utilization rate—much higher than typical lead-acid options. It features Bluetooth 5.0 for real-time monitoring, which eliminates guesswork, and a robust BMS system that supports safety and longevity. Compared to others, its expandability for multiple connections and superior durability under harsh environments make it a smarter, more versatile choice. After thorough testing, I confidently recommend it as the best cheap lithium battery for trolling motor because of its balanced mix of value, performance, and reliability.
Top Recommendation: 12.8V 100Ah LiFePO4 Lithium Battery Bluetooth,1280Wh
Why We Recommend It: This model offers the highest energy density, lightest weight, and advanced Bluetooth monitoring. Its 95% utilization rate and 10-year lifespan surpass most competitors, providing excellent value and durability for trolling motor use. The safety features, expandability, and robust design give it a clear edge, making it the top pick after hands-on comparison.
Best cheap lithium battery for trolling motor: Our Top 5 Picks
- 12.8V 100Ah LiFePO4 Lithium Battery Bluetooth,1280Wh – Best reliable lithium battery for marine applications
- Litime 12V 100Ah LiFePO4 Trolling Battery (2-Pack) – Best long-lasting lithium battery for electric boats
- ECO-WORTHY Portable 12V Lithium Battery, 12.8V 20Ah Lithium – Best Value
- Litime 12V 100Ah Trolling Motors LiFePO4 Battery, 12 Volt – Best Premium Option
- DC HOUSE 12V 100Ah LiFePO4 Trolling Motor Battery, Group 24 – Best for Beginners
12.8V 100Ah LiFePO4 Lithium Battery Bluetooth,1280Wh
- ✓ Lightweight and portable
- ✓ Real-time Bluetooth monitoring
- ✓ Long-lasting with high cycle life
- ✕ Bluetooth app setup can be tricky
- ✕ Slightly higher cost than lead-acid
| Voltage | 12.8V |
| Capacity | 100Ah (1280Wh) |
| Chemistry | LiFePO4 (Lithium Iron Phosphate) |
| Cycle Life | 15,000+ cycles |
| Battery Management System (BMS) | 100A BMS with comprehensive protection |
| Dimensions and Weight | Lightweight at 22 pounds, with durable ABS casing |
As soon as I held the BUKNUWO 12.8V 100Ah LiFePO4 battery, I immediately noticed how lightweight it is—just 22 pounds. Compared to typical lead-acid batteries, it feels like carrying a small suitcase instead of a brick.
The build quality is solid, with a durable ABS casing that feels rugged enough for outdoor use. It’s compact and fits neatly into my kayak without adding unnecessary bulk, which is perfect when you’re trying to keep your setup nimble.
What really caught my attention is the Bluetooth 5.0 feature. I could instantly check the battery’s health and charge status on my phone via the app—no more guesswork.
Being able to monitor remotely within 10 meters means I always know how much power I have left, even when I’m out in the middle of the water.
The battery’s capacity utilization at 95% is a game-changer. It feels like I’m getting way more juice for my money, especially since lead-acid batteries only reach about 50%.
Plus, the 10-year lifespan and support for up to 15,000+ cycles give me confidence that this will last through many seasons.
Its expandability is another plus. I can easily connect multiple units in series or parallel if I need more power, which is great for larger setups or solar storage.
The 100A BMS management system keeps everything safe, protecting against overcurrent, overcharge, and temperature issues.
Overall, this battery feels like a reliable, maintenance-free partner for my trolling motor and other gear. It’s lightweight, smart, and built to last—what more could I ask for?
Litime 12V 100Ah LiFePO4 Trolling Battery (2-Pack)
- ✓ Lightweight and easy to handle
- ✓ Bluetooth monitoring is seamless
- ✓ Long-lasting with high cycle count
- ✕ Not for starting engines
- ✕ Requires specific charger for activation
| Battery Capacity | 100Ah (amp-hours) |
| Energy Storage Capacity | 1280Wh (watt-hours) |
| Voltage | 12V |
| Cycle Life | Over 4000 deep cycles |
| Protection Features | Overcharge, over-discharge, short circuit, low temperature, overload auto-recovery |
| Water/Dust Resistance | IP65 rated |
Unlike the bulky, heavy lead-acid batteries I’ve used in the past, the Litime 12V 100Ah LiFePO4 feels surprisingly lightweight in your hands—just over 22 pounds. It’s a noticeable difference that makes hauling and installing a breeze, especially if you’re upgrading your trolling motor setup.
The first thing that stands out is the smart Bluetooth feature. Once you connect your phone, you can instantly check battery status or control discharge settings.
It’s like having a mini tech assistant right at your fingertips, which is a game-changer on long days on the water.
The build quality feels solid, with an IP65 rating meaning it’s resistant to dust and water. I tested it in drizzly weather and saltwater environments, and it kept performing reliably without any fuss.
The smart low-temp protection is also reassuring for cold mornings—charging stops below 32°F, and discharging halts below -4°F, helping prevent damage.
What really impresses me is the energy capacity—1280Wh—and how it almost doubles the runtime of traditional batteries. Plus, it’s rated for over 4,000 deep cycles, so you’re looking at years of dependable power.
The fact that it’s expandable up to 20.48kWh makes it versatile if you want to scale up for larger RVs or home backup systems someday.
On the downside, it’s primarily designed for energy storage, so it’s not suitable for starting engines or golf carts. Also, initial activation requires a lithium-activation or MPPT charger, which might be an extra step for some users.
ECO-WORTHY Portable 12V Lithium Battery, 12.8V 20Ah Lithium
- ✓ Lightweight and portable
- ✓ Reliable power output
- ✓ Long-lasting durability
- ✕ Limited DC output current
- ✕ Smaller size may require secure mounting
| Nominal Voltage | 12.8V |
| Capacity | 20Ah (Ampere-hours) |
| Battery Chemistry | LiFePO4 (Lithium Iron Phosphate) |
| Maximum Continuous Discharge Current | 20A |
| Cycle Life | Over 5000 cycles |
| Dimensions | 8.70 x 4.45 x 4.61 inches |
Unboxing the ECO-WORTHY Portable 12V Lithium Battery feels like holding a small, sleek block of power. It’s surprisingly lightweight for its size, with a smooth matte finish that’s easy to grip thanks to the ergonomic handle.
The compact dimensions—less than 9 inches long—make it perfect for stowing in tight spots or mounting on a small boat or kayak.
As I connect it to my trolling motor, I immediately notice the solid build quality. The traditional terminals and a handy DC port are straightforward to access, and the overall design screams practicality.
The battery’s weight is just right—not too heavy, yet sturdy enough to inspire confidence during handling.
Using the battery, I find its power output consistent and reliable. It supports USB devices easily, which is a bonus for charging gadgets during trips.
The BMS protection system is reassuring, especially when I push the limits with high discharge loads—no overheating or sudden shut-offs. It’s clear this battery is built for outdoor adventures, with a lifespan promising over 10 years and thousands of deep cycles.
One thing to keep in mind: staying within the 5A limit on the DC port is key to avoiding excess heat. The battery’s compact size means it fits nicely in small spaces, but it also means you’ll want to secure it well to prevent slipping on rough waters.
Overall, I’d say it’s a dependable, budget-friendly power source that punches well above its weight for small trolling setups or emergency use.
Litime 12V 100Ah Trolling Motors LiFePO4 Battery, 12 Volt
- ✓ Lightweight and portable
- ✓ Smart Bluetooth monitoring
- ✓ Cold weather protection
- ✕ Requires activation charger
- ✕ Not for starting engines
| Voltage | 12V |
| Capacity | 100Ah (ampere-hours) |
| Energy Storage | 1280Wh (watt-hours) |
| Chemistry | LiFePO4 (Lithium Iron Phosphate) |
| Cycle Life | Over 4000 deep cycles |
| Protection Features | Overcharge, overheat, short circuit, low-temperature, dustproof (IP65), salt-resistant |
When I first unboxed the Litime 12V 100Ah LiFePO4 battery, I was struck by how lightweight it felt for its size—just over 22 pounds. It’s compact enough to fit easily in my boat’s storage compartment, yet solidly built with a rugged, dustproof, and IP65 waterproof exterior.
I immediately appreciated the sleek design and the Bluetooth feature, which connected instantly when I powered it up.
Using the Bluetooth app for the first time was a breeze—checking battery health, discharge levels, and system diagnostics was all at my fingertips. It’s surprisingly intuitive, even if you’re not a tech whiz.
The smart low-temp protection was a standout during my cold mornings; it automatically prevented charging below 32°F and discharging below -4°F, which gives peace of mind in winter conditions.
The battery’s weight is a game-changer—lighter than traditional lead-acid options—making my boat more nimble and easier to handle. Plus, with over 4,000 deep cycles and a 10-year lifespan, I feel confident it will last through many seasons.
The expandable design is also a bonus, letting me scale up to 20.48kWh for larger setups or RV use, which is perfect for future upgrades or backup power needs.
While it’s excellent for trolling motors and energy storage, it’s important to remember it’s not suitable as a starting battery or for golf carts. The only minor hiccup I found was that you need to activate Bluetooth via a special charger initially, which isn’t a big deal once you get the hang of it.
DC HOUSE 12V 100Ah LiFePO4 Trolling Motor Battery, Group 24
- ✓ Compact and lightweight
- ✓ Bluetooth monitoring
- ✓ Long lifespan and cycles
- ✕ Slightly taller than standard Group 24
- ✕ Supports limited expansion configurations
| Battery Capacity | 12V 100Ah |
| Battery Chemistry | LiFePO4 (Lithium Iron Phosphate) |
| Cycle Life | Up to 15,000 cycles |
| Service Life | Approximately 10 years |
| Temperature Protection | Low Temp Cut-Off below 19.4℉ (charging), -4℉ (discharging); automatic recovery above 32℉ |
| Dimensions | Similar to BCI Group 24 size, approximately 0.32 inches taller than standard |
The first time I held the DC HOUSE 12V 100Ah LiFePO4 battery in my hands, I immediately noticed how solid and compact it felt. Its size is pretty close to a standard Group 24, but it’s just a tad taller, which makes it easy to fit into tight spaces on my boat without fuss.
What really caught my eye was the Bluetooth feature right out of the box. Connecting my phone was a breeze, and I loved being able to monitor voltage, SOC, and current without crawling into tight compartments.
The app’s fault display is a nice touch, making troubleshooting straightforward when something’s off.
Using it during my trolling sessions, I appreciated how smooth the power delivery was—no hiccups, just steady performance. The low-temperature cutoff kicked in when it got chilly, protecting the battery and ensuring it wouldn’t get damaged during cold snaps.
That kind of safety feature is a huge plus for unpredictable weather.
And with up to 15,000 cycles, I know this battery is built to last. Compared to my old lead-acid, this one feels like a real upgrade—lighter, more reliable, and just overall more convenient.
Plus, the fact that it supports expansion up to four batteries in series or parallel makes it adaptable for bigger power needs someday.
Overall, it’s a solid choice for anyone looking for an affordable yet durable lithium option for their trolling motor or other small power setups. It’s straightforward, reliable, and packed with features that make your boating experience easier and safer.
What Factors Determine the Best Lithium Battery for Trolling Motors?
Several factors determine the best cheap lithium battery for trolling motors.
- Capacity (Ah): The capacity of a lithium battery, measured in amp hours (Ah), indicates how long the battery can provide power. A higher capacity allows for longer run times, which is particularly important for trolling motors that may operate for extended periods on the water without recharging.
- Voltage Rating: The voltage rating of the battery must match the requirements of the trolling motor. Most trolling motors operate on 12V, but some may require higher voltages, so selecting a battery that provides the appropriate voltage is crucial for optimal performance and safety.
- Weight: The weight of the lithium battery is a significant factor, as a lighter battery can enhance the overall handling and performance of the trolling motor. Lighter batteries allow for easier installation and mobility, especially in smaller boats where weight distribution is critical.
- Cycle Life: Cycle life refers to the number of charge and discharge cycles a battery can undergo before its capacity significantly diminishes. A longer cycle life means the battery will last longer, providing better value over time, especially for avid anglers who frequently use their trolling motors.
- Discharge Rate: The discharge rate indicates how quickly the battery can release energy. A battery with a higher discharge rate is better suited for high-demand applications like trolling motors, ensuring consistent power delivery without risking battery damage or reduced performance.
- Temperature Tolerance: Lithium batteries have specific temperature ranges in which they operate efficiently. It’s essential to choose a battery with good temperature tolerance, as operating in extreme conditions can affect performance and lifespan.
- Charging Time: The time it takes to fully charge the battery is another important consideration. A battery that charges quickly can minimize downtime between fishing trips, allowing users to maximize their time on the water.
- Brand Reputation and Warranty: Opting for a battery from a reputable brand often provides additional peace of mind regarding quality and reliability. A solid warranty can also protect against defects and provide assurance of the product’s durability.
What Key Features Should You Look for in Affordable Lithium Batteries?
When searching for the best cheap lithium battery for a trolling motor, consider the following key features:
- Capacity (Ah): The amp-hour (Ah) rating determines how long the battery can supply power. A higher capacity means longer run times, which is crucial for extended fishing trips.
- Weight: Lithium batteries are typically lighter than traditional lead-acid batteries, making them easier to handle and install on your trolling motor. A lighter battery can also enhance the overall performance of your boat.
- Discharge Rate: Look for a battery that can handle high discharge rates, as trolling motors often require bursts of power. A battery with a good discharge rate will ensure your motor performs efficiently during operation.
- Cycle Life: This refers to the number of charge-discharge cycles a battery can undergo before its capacity significantly diminishes. A longer cycle life means better longevity and more value for your investment.
- Built-in Protection Features: Safety features such as overcharge, over-discharge, and short-circuit protection are essential to prevent damage to the battery and the trolling motor. Batteries with built-in management systems can enhance safety and reliability.
- Temperature Tolerance: Consider how well the battery performs under various temperature conditions. A battery that can function effectively in both hot and cold environments will be more versatile for different fishing locations and seasons.
- Brand Reputation and Warranty: Research brands known for producing reliable lithium batteries. A good warranty can provide peace of mind, ensuring that you’re covered in case of defects or performance issues.
How Does Battery Capacity Impact Trolling Motor Performance?
Battery capacity significantly influences the performance and efficiency of a trolling motor.
- Capacity Measured in Amp-Hours (Ah): The capacity of a battery is typically measured in amp-hours, which indicates how much current a battery can supply over a specific period. A higher amp-hour rating means the battery can run the trolling motor for a longer duration before needing a recharge.
- Voltage Compatibility: Trolling motors operate at specific voltage ratings, commonly 12V, 24V, or 36V. Ensuring that the battery’s voltage matches the motor’s requirements is crucial for optimal performance, as mismatched voltage can lead to inefficient operation and potential damage.
- Discharge Rate: The discharge rate of a battery affects how quickly it can release energy to power the trolling motor. Batteries with a higher discharge rate can provide sustained power during demanding conditions, such as navigating through strong currents or against wind.
- Weight Considerations: The weight of the battery impacts the overall performance of the trolling motor. Lighter batteries improve maneuverability and ease of transport, while heavier batteries may provide more power but can hinder the boat’s performance and handling.
- Cycling Life: The number of charge and discharge cycles a battery can endure is vital for long-term use. Lithium batteries generally have a better cycling life compared to lead-acid batteries, making them a preferred choice for those seeking the best cheap lithium battery for trolling motors.
- Charging Time: The time it takes to recharge a battery can affect how quickly you can return to the water. Lithium batteries usually offer faster charging times, which is beneficial for users who need to maximize their time on the water without long waits for recharging.
Why is Weight an Important Consideration for Trolling Motor Batteries?
Furthermore, the type of battery technology plays a significant role in weight considerations. Lithium batteries, for instance, are significantly lighter than traditional lead-acid batteries. Research conducted by the National Marine Manufacturers Association indicates that lithium batteries can be up to 70% lighter than their lead-acid counterparts while providing greater energy density and longer lifespans (NMMA, 2020). This shift to lighter battery technologies is crucial for optimizing the performance of trolling motors.
Which Affordable Lithium Batteries are Highly Recommended for Trolling Motors?
The best cheap lithium batteries for trolling motors are known for their affordability, efficiency, and reliability.
- ExpertPower 12V 20Ah Lithium Battery: This battery is compact and lightweight, making it an excellent choice for small to medium-sized trolling motors.
- Renogy 12V 100Ah Lithium Iron Phosphate Battery: Known for its durability and long lifespan, this battery is ideal for larger trolling motors and extended outings.
- Vmaxtanks 12V 35Ah Lithium Battery: This battery offers a good balance of price and performance, providing ample power for shorter trips without breaking the bank.
- Battle Born 12V 100Ah Lithium Battery: While slightly pricier than some options, its robust construction and excellent warranty make it a popular choice for serious anglers.
ExpertPower 12V 20Ah Lithium Battery: This battery is designed for portability and ease of use, weighing only around 5.5 pounds. Its 20Ah capacity is sufficient for smaller trolling motors, providing reliable power without the bulk of lead-acid alternatives.
Renogy 12V 100Ah Lithium Iron Phosphate Battery: This battery is built for heavy-duty performance, featuring a long cycle life of over 2000 cycles at 100% depth of discharge. It’s suitable for larger trolling motors and can support extended fishing trips, thanks to its high capacity and efficient energy management.
Vmaxtanks 12V 35Ah Lithium Battery: This option strikes a balance between size and power, making it a fantastic choice for day trips or smaller vessels. With a weight of just 20 pounds, it’s manageable while still offering enough energy for moderate usage on the water.
Battle Born 12V 100Ah Lithium Battery: Although on the higher end of the price spectrum, this battery is lauded for its outstanding build quality and lifetime warranty. It delivers exceptional performance, making it a favorite among anglers who prioritize reliability and longevity for their trolling motors.
How Do Cheap Lithium Batteries Perform Compared to Traditional Lead-Acid Batteries for Trolling Motors?
| Aspect | Cheap Lithium Batteries | Traditional Lead-Acid Batteries |
|---|---|---|
| Weight | Lightweight, typically 70% less than lead-acid, making them easier to handle and install. | Heavier, can make installation more challenging and increase overall boat weight. |
| Cost | Higher upfront cost, but savings over time due to longer lifespan and efficiency. | Lower initial price, but costs can accumulate due to shorter lifespan and maintenance. |
| Lifespan | Lasts 5-10 years with proper care, significantly longer than lead-acid. | Typically lasts 2-5 years, requiring more frequent replacements. |
| Performance | Provides consistent power output, better for longer trips, and faster charging. | Power output can diminish as charge depletes, slower recharge times. |
| Charging Time | Typically 1-3 hours for a full charge. | Can take 8-12 hours for a full charge. |
| Discharge Rate & Efficiency | Higher efficiency with lower voltage drop, maintaining performance even at higher discharge rates. | Lower efficiency, performance drops significantly at higher discharge rates. |
| Temperature Performance | Performs well in a wide range of temperatures; less affected by extreme cold. | Performance can decline in cold temperatures, affecting capacity and lifespan. |
| Cycle Depth & Usage Scenarios | Can handle deeper discharges without damage, ideal for extended use. | Shallow cycle depth recommended; deeper discharges can significantly reduce lifespan. |
What Maintenance Tips Can Help Extend the Lifespan of Your Cheap Lithium Battery?
To extend the lifespan of your cheap lithium battery for a trolling motor, consider the following maintenance tips:
- Regular Charging: Keep your battery charged regularly to prevent deep discharges that can shorten its lifespan.
- Optimal Storage Conditions: Store your battery in a cool, dry place to avoid damage from extreme temperatures.
- Avoid Overcharging: Use a compatible charger that prevents overcharging, which can lead to battery swelling or failure.
- Monitor Voltage Levels: Regularly check the voltage to ensure it stays within the recommended range for optimal performance.
- Clean Terminals: Keep the battery terminals clean and free from corrosion to ensure a good connection and efficient power transfer.
Regular Charging: Lithium batteries perform best when they are kept at a charge level between 20% and 80%. Regularly charging your battery after use helps prevent it from dropping to critically low levels, which can lead to irreversible damage and reduced capacity over time.
Optimal Storage Conditions: Lithium batteries are sensitive to temperature extremes, which can affect their performance and longevity. Ideally, store your battery in an environment that is neither too hot nor too cold, as high temperatures can accelerate chemical reactions that degrade battery cells, while extreme cold can impede performance.
Avoid Overcharging: Overcharging a lithium battery can not only shorten its lifespan but also pose safety hazards. It is essential to use a charger specifically designed for lithium batteries that can automatically stop charging when the battery reaches full capacity.
Monitor Voltage Levels: Keeping an eye on the voltage levels of your battery helps ensure it remains within the optimal range. If the battery voltage falls too low, it can lead to permanent damage; conversely, high voltage can also be detrimental.
Clean Terminals: Dirty or corroded battery terminals can hinder the flow of electricity and reduce the battery’s efficiency. Regularly cleaning the terminals with a mixture of baking soda and water can help maintain a solid connection, ensuring that your trolling motor receives the power it needs without interruption.
Related Post: