Best battery for trolling motor. You can maximize the use of your boat every time you go into the water by selecting the right battery upfront. You can save money and get a more extended life battery if you choose the right one.
It would be best if you searched for the best battery for trolling motor to get out fishing. Trolling motors require batteries that can deliver a continuous discharge of energy over one whole day outside in the water.
Most of the batteries are made with deep cycles, and AGM delivers the longest-running time per charge. If you are searching for a battery, you may find all the latest information confusing. Read on, and you will find the best battery for trolling motor.
Factors to consider when purchasing battery for trolling motor
1. The battery type
There are available two types of deep-cycle 12-volt batteries that are recommended for trolling motors. The first one is Lead Acid Wet-Cell, and the second one is AGM Batteries.
The deep-cycle batteries are designed for discharging smaller amounts of current. They are not for an extended period and not for more frequent recharging.
a. Lead Acid
The lead-acid batteries are maintenance-free, which first emerged in the mid-1970s. Valves have been increased to control venting during the charge and fast discharge, which let go of gases if pressure builds up.
It does not submerge the plates in a liquid form, and the electrolyte is impregnated into a moistened separator. The separator is designed like nickel-based and lithium-based battery systems.
This separator enables the battery without leakage while in operation. The lead-acid battery consists of a lower electrolyte than the flooded type battery.
Probably the most vital advantage of a lead-acid battery is combining hydrogen and oxygen to make water and prevent dry out during the operation of cycling. The recombination happens at a pressure of 0.14 bar or two psi.
1. The valve
The valve of the battery serves as a safety vent to prevent gas buildup from rising. Venting should not be operated repeatedly, because this will lead to an eventual dry-out.
Smaller packs with capacities of up to 30Ah are called sealed lead-acid or SLA. These batteries are used for wheelchairs, emergency lighting, and small UPS.
Many lead-acid types have emerged, and the most popular and typical example is a gel or usually called valve-regulated lead-acid (VRLA), and absorbent glass mat (AGM). The gel cell consists of a silica gel which suspends the electrolyte in a paste.
SLA is the most preferred choice because it is affordable, low maintenance, and dependable service for healthcare in hospitals and retirement homes. The VRLA is used as a power backup for cellular repeater towers, hospitals, airports, Internet hubs, and banks.
2. Low voltage
Unlike the flooded battery, the SLA battery is designed with a low over-voltage potential to prevent the battery from generating gas during charge. Excess charging causes dry-out, water depletion, venting, and gassing.
The maximum temperature while running for a VRLA battery is 25°C (77°F). If the temperature rises 8°C (15°F) above this temperature threshold, it will cut the battery life in half.
Lead-acid batteries are rated at a five-hour (0.2C) and twenty-hour (0.05C) discharge rate. The battery performs at the optimum level when discharged slowly.
Its capacity readings are higher at a slower discharge than at the 1C-rate. A lead-acid battery can provide high pulse currents of several C if done for hardly any seconds.
The lead-acid battery is suitable as a starter battery or SLI (starter-light-ignition). Unfortunately, the sulfuric acid content makes lead-acid batteries environmentally unfriendly.
Lead-acid batteries are classified into three usages: Automotive (SLI), motive power (deep cycle or traction), and stationary (UPS).
b. AGM or Absorbent Glass Mat
AGM or Absorbent Glass Mat battery technology became popular in the early 1980s for UPS, vehicles, and military aircraft. The battery is spill-proof because a fiberglass mat absorbs the sulfuric acid.
The shipment of this AGM battery can be without hazardous material restrictions. The plates can be designed flat similar to a flooded lead-acid pack in a rectangular case.
The AGM battery has internal resistance and can offer high currents on-demand, and delivers a long service life, including deep cycled. AGM battery is maintenance-free, offers excellent electrical reliability, and is lighter compared to the lead-acid type.
AGM batteries are less prone to sulfation, and they can sit in storage for a more extended period. The battery has a low self-discharge and can withstand low temperatures.
A charge of the AGM battery is up to five times faster than the flooded version. AGM battery delivers a depth-of-discharge of 80 percent.
c. Lithium battery
The anode makes the electric current flow through an external circuit. When the battery is charged, lithium ions are stored in the anode. The electrolyte is formed of additives, solvents, and salts. It serves as the conduit of lithium ions between the anode and cathode.
2. Amperage Hour Rating or reserve capacity
An essential factor to consider is the amount of reserve amp draw. The reserve capacity is the amount of time you own until the battery drops to its minimum voltage.
You can compare a battery’s amperage hour rating to a car’s gas tank. A battery with a 115 amp hour rating will beat a 100 amp-hour rated battery in terms of endurance.
A 100 amp hour rated battery can provide 100 amp hours of current. If a trolling motor runs at low speed and pulls only four amps, the battery will last up to 25 hours. (100 amp hour rating / 4 amps = 25 hours).
If the trolling motor is pulling 40 amps, the battery will last for 2.5 hours (100 amp hour rating / 40 amps = 2.5 hours). It is recommended to use a 100 amperage hour rating for trolling motors, a Group 27 rating, and 175 minutes of Reserve Capacity (RC).
Not every manufacturer has the same kind of warranty. Some manufacturers offer three months warranty, ten-year warranties, and some provide lifetime warranties.
If you want to protect yourself using a battery, go for a decent warranty. Look at the reviews, and you should go for a battery with a good warranty.
4. The size
The trolling motor determines what size battery you require. It is essential to find out what group size battery you require. You may not have enough power if the size is not correct.
|Purpose||Group||Amps per hour||Volts||Boat size|
|Best run-time||Group 31||95 to 125 amps/hour||12-volts||Large boats|
|Medium run-time||Group 27||85 – 110 amps/hour||12-volts||Bass boats|
|Good run-time||Group 24||70 to 85 amps/hour||12-volts||Small boats|
5. Good charger
Selecting a good charger that is compatible with the battery you are using is also crucial. Selecting a charger that does not operate well will cause you to get less time out of each use. A bad selection of battery chargers will also shorten the life cycle of the battery due to the repeated charge.
Benefits of lithium marine battery
Lead-acid batteries follow a 3-phase cycle that may not absorb the energy fast enough. Lithium batteries use little internal resistance to get in the way of energy, that skip the slowly absorb phase. Without the slowly absorb phase, lithium batteries go zipping to 100% quickly. You do not even have to fully charge the battery if you do not have time. You can only charge the battery for just thirty minutes, you can take advantage of it.
2. No maintenance
With lead-acid batteries, you need to add water now and again. With lithium batteries, you do not need to do anything.
3. Lower wasted energy
After a long time of use, lithium marine batteries can maintain and use 99% of their energy. Compared to lead-acid batteries that will lose 15% of their energy due to resistance, age, and other factors.
4. Stable voltage
The unstable voltage happens frequently when you are on a boat. The LED lights may dim a little as there is a drop in voltage.
By using a lithium battery, it maintains a higher resting voltage at 13.2-volts compared to 12.6-volts lead-acid battery. The resting voltage of a lithium battery will not change during the load or how much it has been discharged.
Without resting voltage any appliances can run efficiently. The lithium batteries can tackle the heavy draw of a load.
Lithium marine batteries are lightweight that will not add a boat’s weight. They have a weight of a third less than AGM batteries and half less than lead-acid batteries.
Lithium batteries are smaller, lighter, and only require fewer amounts to perform the same job.
6. More usable amp-hours
Lithium batteries can be 100% discharged. To maintain a longer lifespan, the batteries can be discharged up to 80%. The 300 amp-hour battery bank will provide 240 usable amp-hours.
7. Life expectancy
Even with 80% lithium batteries discharge, users can expect the battery to last more than 2,000 cycles. Compared to AGM batteries, users can expect to last 1,000 cycles.
Benefits of lead-acid batteries
The lead-acid batteries are durable. If properly maintained, these batteries have a high number of charge-discharge cycles. They are less likely to suffer damage from overcharging.
The price of lead-acid batteries can be four times less expensive than other types. If you own a business and want to cut fleet management costs, it is a great alternative.
Lead-acid batteries are recyclable and therefore produce less waste. Lead-acid is widely available, so it is a popular choice for years to come.
- A high number of charge-discharge cycles
- Does not overcharge
- Less expensive
- Cut cost
- Produce less waste
- Popular choice
Benefits of AGM batteries
AGM batteries have glass mats that do not flood the electrodes therefore they prevent spillage. They do not absorb the electrolyte. They hold the electrolyte in place.
2. High-power output
AGM batteries provide minimal internal resistance. This feature offers sufficient bursts of power when needed. It is required when starting a battery. These AGM batteries respond better to loading.
3. Short charging time
AGM batteries are fast-charging. Their charging rate can go five times faster other types of batteries.
4. Long lifespan
AGM batteries have a long lifespan. They also last longer when they are not in use. It is possible due to the minimized self-discharging. This feature will make sure that one battery does not have to keep being charged after an extended period of inactivity.
At first, AGM batteries were designed for the aircraft industry. Their design is sturdy and can handle vibrations. They are an excellent choice for high-end motorcycle and race cars. Its sandwich construction prevents falling apart. The batteries can withstand extreme temperatures.
6. Does not build-up sulfation
Sulfation is the accumulation of lead sulfate crystals in the battery cells. The sulfation can cause failure in batteries. Crystals build-up may occur as the battery is not fully charged. It prevents the efficient conversion of chemical to electrical energy. AGM batteries can reduce sulfation which makes it possible to be stored in extended periods without needing one single recharge.
10 Top best battery for trolling motor
|Tracker Marine Lithium Super High Output Lithium Deep Cycle Marine Battery||Cycles over 5,000 times||$$$||4.5|
|MarCum King Lithium LiFePO4 Marine Battery||Cycles over 2,000 times||$$$||4.3|
|Bass Pro Shops Pro Series Deep-Cycle AGM Marine Battery||Cycles over 900 times||$$$||4.2|
|Bass Pro Shops Pro Series AGM X-900 Marine Battery For Trolling Motor||Cycles over 900 times||$$$||4.7|
|NorthStar NSB-AGM31M AGM Group 31 Marine Battery 1370MCA/1150CCA||Cycles over 900 times||$$$||4.9|
|Odyssey 34M-PC1500ST TROLLING Thunder Marine Dual Purpose Battery||880 amp||$$$||4.7|
|Universal Power Group 12V 100Ah Solar Wind AGM SLA DEEP Cycle VRLA Battery 12V 24V 48V||3,300 Amp AGM High Output Battery||$$$||4.5|
|VMAX MR137-120 AGM Sealed Marine AGM Battery 12V 120AH for 50lb -110lb thrust Minn Kota||120AH for 50lb||$$$||4.5|
|Optima Batteries 8052-161 D31M BlueTop Starting and Deep Cycle Battery||900 amp||$$$||4.2|
|Trojan T31-AGM 12V 100Ah Group 31 Deep Cycle AGM Battery||100mAh||$$$||–|
List of the best battery for trolling motor
1. Tracker Marine Lithium Super High Output Lithium Deep Cycle Marine Battery
The Tracker Marine Battery can provide maximum power with a minimal footprint. The battery for trolling motor can provide higher peak and continuous discharge currents.
The marine battery can also provide class-leading power in a compact form factor. It features faster speed, better draft, and greater fuel efficiency without water maintenance. In addition, it adds a faster charge rate and slower dormant discharge rate. The battery for trolling motor comes with a 5-year warranty.
- Provide high power with low space
- Higher peak
- Continuous discharge currents
- 5,000 cycles compared to a 270 lead-acid battery, and 350 compared to AGM (at the discharge level)
- Suitable for 12V, 24V, or 36V
- Will not sulfate
- Can be stored at a 20% charge or higher
- 5-year warranty
2. MarCum King Lithium LiFePO4 Marine Battery
This marine battery systems is designed for open-water and can also run on ice. It a higher power draw designed for deep cycle batteries.
The MarCum King Lithium LiFePO4 Marine Battery at 12V 18A is a portable, compact design, and supports a deep-cycle performance marine battery. It is equipped with a BMS circuit to prevent the battery from overcharge, over-discharge, and short-circuiting.
The battery for trolling motor is equipped with a multi-stage charger for fast-charge, reduced-charge near full, and a maintained charge cycle (prevent overcharging).
- Deep-cycle performance
- Compact form
- BMS circuit
- No overcharge
- No short-circuiting
- includes with battery, 6A charger, and fused charging cable
- 2,000 full charge cycles
- No over-discharge
- Certified to UL 62133 standards
- For open-water systems used on ice
3. Bass Pro Shops Pro Series Deep-Cycle AGM Marine Battery
This battery for trolling motor from Bass Pro Shops is a deep-cycle AGM Marine Battery that provides performance, power, and balance of battery life. The dual-purpose design can be used for deep-cycle and cranking.
You do not require to load up on boat batteries. All you need to do is to pick up the boat battery for operation modes.
The battery for trolling motor provides reserve capacity, marine-cranking amps, and cold-cranking amps. It can withstand rough water conditions including leakproof, vibration-resistant, and impact-resistant design.
It comes with a warranty in months 13–months to 36-months.
- Hybrid engineering
- Cold-cranking amps
- Marine-cranking amps
- Reserve capacity – 190 minutes
- Available in group 22, 24, 27, 30
4. Bass Pro Shops Pro Series AGM X-900 Marine Battery
This battery for trolling motor is affordable. The AGM X-900 is a fast-charging battery that cycles up to 900 times at 50% discharge. The marine cranking ranges from 1,010-amps to 1,370-amps.
The marine battery comes with a 4-year warranty and a strong powerful turnover. According to many reviewers, the battery can last an average of 4-5 years.
It can also retain a charging power during the lifetime. The average battery runtime is six hours with 10-hours of fully recharge. It is a reliable battery that can deliver consistent result.
- Best boat batteries for performance, power and battery life
- Hybrid engineering
- Can be stored for more than 400 days without needing a recharge
- Cold-cranking amps
- Marine-cranking amps
- Reserve capacity
- Highly shock-resistant to withstand rough water conditions
- Unbeatable warranty: free replacement in months 0–12 and pro-rated months 13–36
- Available in group 24, 27, and 31
5. Odyssey 34M-PC1500ST TROLLING Thunder Marine Dual Purpose Battery
This Odyssey 34M battery product can operate for ten years and is equipped with comes with a cold cranking amp of 880. They are built to have a low operating cost and live a long life cycle.
You can use this battery without a recharge for seven hundred twenty days or two years. It comes with a four or 4-year warranty.
This product is built to be vibration resistant and can prevent shock to the battery. This resistance is what extends life.
This battery product has been tested in temperatures from -40 to 176 degrees Fahrenheit. You do not have to schedule maintenance because it is maintenance-free, and there is no need for corrosion prevention.
The battery is spill-proof, according to the Department of Transportation.
6. Optima Batteries 8052-161 D31M BlueTop Starting and Deep Cycle Battery
This Optima Blue Top trolling motor battery can withstand inactivity and extreme temperatures. You can use this battery for storing your boat for fishing in the summer or the winter.
According to verified purchasers, this battery is excellent in hot weather and can stay between charges for along time. Some say that it can go for six years.
This Optima battery is high for storage and keeps a charge even after long periods of non-use.
The in-depth cycle feature makes this Optima battery very popular, especially for severe anglers for larger fishing boats. The power of this battery can turn over a larger motor among tough waters.
7. NorthStar NSB-AGM31M AGM Group 31 Marine Battery 1370MCA/1150CCA
This NorthStar Battery For Trolling Motor Ultra-High-Performance AGM31 battery delivers a dependable CCA and turns over fast. You do not have to worry about getting stranded out on the ocean or sea or lake. This battery product will make sure to fire up and reliable you need it to.
You do not need to clean corrosion or check for water level because it is completely maintenance-free. The NorthStar Ultra-High-Performance AGM31 battery can maintain itself, withstand extreme weather conditions, and durable when stored for long periods.
The manufacturer provides a warranty between three and four years. The great thing about this battery is the life cycle and power.
The battery can turn over a much larger motor due to its size. It holds a longer charge.
The Northstar brand is famous for fishing boats that durable and resistant to heat. Compared to other batteries at the same level, this battery for trolling motor product has a faster recharge.
8. Universal Power Group 12V 100Ah Solar Wind AGM SLA DEEP Cycle VRLA Battery 12V 24V 48V
You do not have to check on the water level of this battery because it is maintenance-free. The strong, robust, and sturdy build lower the risk of vibration and shock regarding excess movement.
The Universal Deep Cycle AGM 100AH comes with a one-year warranty. The battery is made to last between four to six years. You will be impressed by the life cycle of this battery product. The battery lasts all day long and still recharges fast.
9. Trojan T31-AGM 12V 100Ah Group 31 Deep Cycle AGM Battery
The Trojan T31-AGM 100AH battery is designed with exclusive grid technology. The technology allows it to lower the effects of deterioration and corrosion of the battery product.
The Trojan batteries are built to last much longer than lead batteries. AGM technology promotes a reduced operating cost and provides quality charge.
The reality is that this battery for trolling motor lasts long and performs well. It will not get corrosion even when the battery gets exposed to extreme rain and moisture.
10. VMAX MR137-120 AGM Sealed Marine AGM Battery 12V 120AH for 50lb -110lb thrust Minn Kota
This VMAX Charge Tank MR-137 100AH can live between eight to ten years. It can withstand extreme environments, and it is a durable battery that is strong enough to withstand a beating. This powerful charge battery has a lifespan of eight to ten years.
The heavy-duty grids deliver performance and lifespan after years of discharges. It is recommended to use a high-quality brand AGM charger for this VMAX battery.
In extreme conditions, this battery is sturdy and can withstand extreme conditions. The battery product holds a charge that lasts long enough to stay on the water.
The lightweight trolling motor battery comes with a warranty for twelve months, and you get a replacement within those months. You are required to check the charger and panels to make sure they meet the needed wattage.
Charge the battery for fifteen hours, and it should read over 13.3V.