Marine Battery Types for Trolling Motors
Deep cycle batteries are the ultimate choice for trolling motors.
The term "deep-cycle" refers to batteries engineered to discharge smaller amounts of current over extended periods, allowing for more frequent recharging without damaging the battery.
+ Lead Acid (flooded)
Most affordable option, but heavy and shorter lifespan than other types. Require maintenace such as checking water levers.
+ AGM Batteries
Maintenance-free and spill-proof, longer lifespan than traditional lead-acid batteries.
+ Lithium Iron Phsosphate / Lithium Ion / LiFePO4
Significantly longer run time, extremely lightweight, longer battery life, more power and 100% depth of discharge. The initial cost is significantly higher. However, they can be more cost-effective in the long run due to their longevity.
Which is best?
The best battery chemistry for your needs depends largely on your boat's power demands and budget. If you're seeking powerful and reliable batteries, I would say Enjoybot deep cycle lithium battery.
The term "deep-cycle" refers to batteries engineered to discharge smaller amounts of current over extended periods, allowing for more frequent recharging without damaging the battery.
+ Lead Acid (flooded)
Most affordable option, but heavy and shorter lifespan than other types. Require maintenace such as checking water levers.
+ AGM Batteries
Maintenance-free and spill-proof, longer lifespan than traditional lead-acid batteries.
+ Lithium Iron Phsosphate / Lithium Ion / LiFePO4
Significantly longer run time, extremely lightweight, longer battery life, more power and 100% depth of discharge. The initial cost is significantly higher. However, they can be more cost-effective in the long run due to their longevity.
Which is best?
The best battery chemistry for your needs depends largely on your boat's power demands and budget. If you're seeking powerful and reliable batteries, I would say Enjoybot deep cycle lithium battery.
What is Trolling Motor Battery Group Size?
When shopping for trolling motor batteries, you'll encounter various identification methods, one of which is group size. The most common sizes in marine applications are 24, 27, and 31.
However, selecting the right size depends on factors like your boat's dimensions, cargo weight, and the motor's power requirements.
However, selecting the right size depends on factors like your boat's dimensions, cargo weight, and the motor's power requirements.
| BCI Group | L x W x H |
| 24 | 10.25 x 6.81 x 8.87 |
| 27 | 12.06 x 6.81 x 8.75 |
| 31 | 12.06 x 6.81 x 8.75 |
What Amp-Hour Rating Should I Look For?
Amp-hour ratings show how many amps your battery will give for one hour.
To calculate the run time of a battery with your trolling motor, divide the battery’s amp-hour rating by the trolling motor’s max draw.
A 12-volt, 100 amp-hour battery would last two hours on a trolling motor drawing 50 amps at full power. (100 amp hour battery / 50 amps drawn = 2 hours of run time).
For LiFePO4 (lithium) batteries, we recommend a rating of 50 amp hours or higher. While this may seem low compared to lead-acid batteries, it's crucial to note that LiFePO4 batteries can discharge 100% of their capacity, whereas lead-acid batteries can typically only utilize about 50%. Additionally, high-quality lithium batteries offer better power density and improved voltage stability, enhancing overall capacity and runtime.
To calculate the run time of a battery with your trolling motor, divide the battery’s amp-hour rating by the trolling motor’s max draw.
A 12-volt, 100 amp-hour battery would last two hours on a trolling motor drawing 50 amps at full power. (100 amp hour battery / 50 amps drawn = 2 hours of run time).
For LiFePO4 (lithium) batteries, we recommend a rating of 50 amp hours or higher. While this may seem low compared to lead-acid batteries, it's crucial to note that LiFePO4 batteries can discharge 100% of their capacity, whereas lead-acid batteries can typically only utilize about 50%. Additionally, high-quality lithium batteries offer better power density and improved voltage stability, enhancing overall capacity and runtime.
| Run Time | Voltage | Group Size | Amp Hour |
| Good | 12V | 24 | 70-85 |
| Better | 12V | 27 | 85-110 |
| Best | 12V | 31 | 95-125 |
Checking The Power Needs of Your Trolling Motor
When using lithium batteries, it's essential to ensure they provide sufficient continuous discharge amperage to meet the motor's maximum amp draw.
Insufficient amperage can lead to problems such as the motor shutting off after a short period, failing to turn on the prop, and steering issues. If you experience any motor issues while using lithium batteries, verify that you have adequate continuous amperage for the motor's maximum draw.
Insufficient amperage can lead to problems such as the motor shutting off after a short period, failing to turn on the prop, and steering issues. If you experience any motor issues while using lithium batteries, verify that you have adequate continuous amperage for the motor's maximum draw.
| Boat Weight | Minimum Thrust Level | Battery Voltage | Continuous Discharge |
| ≤1500 | 30 lbs | 12V | 30A |
| 2000 | 40-45 lbs | 12V | 42A |
| 2500 | 50-55 lbs | 12V | 50A |
| 3000 -3500 | 70 lbs | 24V | 42A |
| 4000 | 80 lbs | 24V | 56A |
| 4500 | 101-112 lbs | 36V | 46A (101 lbs)/52A (112 lbs) |
When to Replace My Trolling Motor Battery?
+ Battery Age
Lead-acid batteries typically last 2-3 years with regular use and proper care. If yours is older than that, it’s likely time for a replacement.
+ Reduced Runtime
If your trolling motor no longer runs as long on a single charge, this is a clear indication that the battery is wearing out.
+ Charging Issues
If the battery takes significantly longer to fully charge or fails to hold a charge well, it may be nearing the end of its lifespan.
+ Visible Damage
Inspect the battery for cracks, leaks, or other physical damage. Any signs of wear should prompt a proactive replacement.
+ Sulfation
Over time, lead-acid batteries can develop lead sulfate buildup on the plates, diminishing their capacity. This is another reason to consider replacing an older battery.
+ Reduced Power:
If your trolling motor lacks the power and thrust it once had, the battery is likely to blame.
Lead-acid batteries typically last 2-3 years with regular use and proper care. If yours is older than that, it’s likely time for a replacement.
+ Reduced Runtime
If your trolling motor no longer runs as long on a single charge, this is a clear indication that the battery is wearing out.
+ Charging Issues
If the battery takes significantly longer to fully charge or fails to hold a charge well, it may be nearing the end of its lifespan.
+ Visible Damage
Inspect the battery for cracks, leaks, or other physical damage. Any signs of wear should prompt a proactive replacement.
+ Sulfation
Over time, lead-acid batteries can develop lead sulfate buildup on the plates, diminishing their capacity. This is another reason to consider replacing an older battery.
+ Reduced Power:
If your trolling motor lacks the power and thrust it once had, the battery is likely to blame.
Battery Buying Tips Summarized
+ Battery Type & Group Size
1. Choose the battery type and group size that best fit your budget, performance requirements, and space constraints.
2. Avoid mixing battery types in 24 or 36-volt systems; for instance, do not connect lead-acid and lithium batteries in series to create a 24-volt system.
+ Amp-Hour Rating
Higher Ratings for Longer Run Time: The higher the amp-hour rating, the longer your trolling motor can run on a single charge.
+ Deep Cycle Battery
1. Regardless of the battery type you choose, ensure it’s a “deep cycle” battery.
2. All LiFePO4 batteries are designed for deep cycle operation.
3. A cranking battery is not suitable for use with an electric trolling motor
+ Connecting in Series or Parallel
Using Multiple Batteries: If one battery isn't sufficient, you may need to connect several batteries in series or parallel to achieve the desired power output.
1. Choose the battery type and group size that best fit your budget, performance requirements, and space constraints.
2. Avoid mixing battery types in 24 or 36-volt systems; for instance, do not connect lead-acid and lithium batteries in series to create a 24-volt system.
+ Amp-Hour Rating
Higher Ratings for Longer Run Time: The higher the amp-hour rating, the longer your trolling motor can run on a single charge.
+ Deep Cycle Battery
1. Regardless of the battery type you choose, ensure it’s a “deep cycle” battery.
2. All LiFePO4 batteries are designed for deep cycle operation.
3. A cranking battery is not suitable for use with an electric trolling motor
+ Connecting in Series or Parallel
Using Multiple Batteries: If one battery isn't sufficient, you may need to connect several batteries in series or parallel to achieve the desired power output.
Care & Maintenance
Keep the Batteries Clean
Periodically inspect your battery terminal connections to ensure they are clean, secure, and protected from the elements, as corrosion can impair battery performance and pose safety risks.
Store the Batteries Properly
+ A garage or a climate-controlled storage unit could be ideal options to store your RV batteries.
+ Disconnect the Batteries to prevent any potential damage when not in use for an extended period.
Periodically inspect your battery terminal connections to ensure they are clean, secure, and protected from the elements, as corrosion can impair battery performance and pose safety risks.
Store the Batteries Properly
+ A garage or a climate-controlled storage unit could be ideal options to store your RV batteries.
+ Disconnect the Batteries to prevent any potential damage when not in use for an extended period.
Finally, Recycle Your Old Batteries
If your old batteries are flooded lead-acid or AGM, they are 99% recyclable. Simply bring them in for recycling when you buy your new golf cart batteries, or take them to a recycling center or automotive shop.
Contact our expert team, we’ll help you select the best battery for your golf cart or upgrading your golf cart battery, maximizing its performance and endurance.
Contact our expert team, we’ll help you select the best battery for your golf cart or upgrading your golf cart battery, maximizing its performance and endurance.
Ready to Pick It Up?
Shop Enjoybot Trolling Motor Batteries
Enjoybot
12V 100Ah Enjoybot LiFePO4 Lithium Battery | Group 24 & 31
From
$329.00 CAD
Unit price
/
Unavailable
GROUP
24 & 31
ENERGY
1280 Wh
DIMENSION
10.23 x 6.61 x 8.22 in
12.95 x 6.77 x 8.42 in
12.95 x 6.77 x 8.42 in
WEIGHT
22 & 23 lbs.
CYCLE
4000+ times @ 100% DOD
Enjoybot
12V 150Ah Enjoybot LiFePO4 Lithium Battery | Group 31
From
$529.00 CAD
Unit price
/
Unavailable
GROUP
31
ENERGY
1920 Wh
DIMENSION
12.95 x 6.77 x 8.42 in
WEIGHT
31.6 lbs.
CYCLE
4,000+ times @ 100% DOD
Enjoybot
24V 100Ah Enjoybot Battery Kit | 2-Pack Combination
From
$659.00 CAD
Unit price
/
Unavailable
GROUP
24 & 31
ENERGY
1280 Wh
DIMENSION
10.23 x 6.61 x 8.22 in
12.95 x 6.77 x 8.42 in
12.95 x 6.77 x 8.42 in
WEIGHT
22 & 23 lbs.
CYCLE
4000+ times @ 100% DOD
Enjoybot
24V Enjoybot LiFePO4 Lithium Trolling Motor Battery Set - 2 batteries
From
$659.00 CAD
Unit price
/
Unavailable
GROUP
24 & 31
ENERGY
1280 & 1920Wh
DIMENSION
10.23 x 6.61 x 8.22 in
12.95 x 6.77 x 8.42 in
12.95 x 6.77 x 8.42 in
12.95 x 6.77 x 8.42 in
12.95 x 6.77 x 8.42 in
WEIGHT
22 & 23 &31.6 lbs.
CYCLE
4000+ times @ 100% DOD
LIFEPO4 TROLLING MOTOR BATTERY FAQ
How to choose my trolling motor battery?
How to choose my trolling motor battery?
● Step1: Please note that this is a deep cycle battery, not a cranking battery.
● Step2: Confirm the voltage of your trolling motor (12V, 24V or 36V).
● Step3: Confirm the maximum output current of your trolling motor. Please note that the maximum continuous output current of our battery must be at least twice that of the motor, otherwise, our battery will not be able to run your device.
● Step2: Confirm the voltage of your trolling motor (12V, 24V or 36V).
● Step3: Confirm the maximum output current of your trolling motor. Please note that the maximum continuous output current of our battery must be at least twice that of the motor, otherwise, our battery will not be able to run your device.
Can the Enjoybot lithium battery be used as a cranking battery?
Can the Enjoybot lithium battery be used as a cranking battery?
No, Enjoybot only offer deep cycle battery, our battery is not designed for starting engines, it can not be used as a cranking battery due to BMS setting. When the boat's engine has started, the boat's engine needs continuous and reliable power for trolling motors, which is where Enjoybot deep-cycle trolling motor batteries come in.
How to install Enjoybot LiFePO4 battery on my boat?
How to install Enjoybot LiFePO4 battery on my boat?
Simply remove the lead-acid batteries and replace them with the Enjoybot Lithium Battery. In case of multiple battery packs, please attach cables in series, secure the holding bracket, and the installation is complete.
The connection example diagram is as follows:
How to charge a deep cycle trolling motor battery?
How to charge a deep cycle trolling motor battery?
We recommend purchasing a new LiFePO4 charger that is specifically designed for our batteries. Our batteries are a different voltage than standard golf cart batteries, so it is important to use a charger that is designed for the correct voltage.
For 12V batteries, please use 14.6V LiFePO4 battery charger.
For 24V batteries, please use 29.2V LiFePO4 battery charger.
For 36V batteries, please use 43.8V LiFePO4 battery charger.
For 12V batteries, please use 14.6V LiFePO4 battery charger.
For 24V batteries, please use 29.2V LiFePO4 battery charger.
For 36V batteries, please use 43.8V LiFePO4 battery charger.
CAUTIONS
CAUTIONS
1 . For your safety, do not turn on the motor until the propeller is submerged in water. If you are installing a lead wire plug, ensure proper polarity and refer to your boat owner's manual for guidance.
2. Always disconnect the motor from the battery or batteries when not in use or while charging.
3. Improper wiring of 24/36/48-volt systems can result in battery explosions, so take care to connect everything correctly.
4. Ensure all battery post connections are secure to the terminals, and install the battery in a well-ventilated compartment.
2. Always disconnect the motor from the battery or batteries when not in use or while charging.
3. Improper wiring of 24/36/48-volt systems can result in battery explosions, so take care to connect everything correctly.
4. Ensure all battery post connections are secure to the terminals, and install the battery in a well-ventilated compartment.