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A trolling motor is an invaluable piece of equipment for anglers using a boat, yet the best trolling motors are only as good as the batteries used to power them!
With a good trolling motor battery, you get to use the motor for longer and can even use it to power other onboard electronics. The right battery will last for many years, so it’s certainly worth investing in a quality battery to enhance your trolling motor and time fishing on the water.
However, choosing the best trolling motor battery can be difficult, as there are few features you want to think about to ensure you choose a suitable battery for your trolling motor and the type of boat you use.
Check the guide below for all the info you need to choose the best battery for your trolling motor or skip ahead to our list of the top ten trolling motor batteries!
In a hurry? Below are our 2 top trolling motor battery picks:
Trolling Motor Battery Buyer’s Guide Battery Type
There are several types of trolling motor batteries available, all offering different pros and cons, so let’s look at what each type has to offer so you can decide which is best for your needs.
One of the most affordable types of batteries on the market, wet cell trolling motor batteries are capable of handling frequent drains and recharges while being relatively durable. If you’re looking for a budget-friendly trolling motor battery then wet cell is a good option.
They do need a bit of maintenance though, namely refilling water levels and checking for corrosion, and are typically heavier than most other batteries. Also, this type of battery has the shortest lifespan, lasting 1-2 years, although this is reflected in the lower price.
Absorbed glass mat (AGM) batteries are considered an upgrade on wet cell batteries. They offer a longer-lasting battery while also a much longer lifespan, usually lasting 3-4 years, while no maintenance is required either.
As this type of battery features a sealed body (sealed lead acid/SLA), there is less chance of leakages and they are much lighter than wet cells, making them a good choice for smaller vessels where space and weight capacity are more restricted.
The biggest downside of AGM batteries is their price. They cost almost double wet cells, although their improved performance and better lifespan mean they still offer great value for money.
Gel batteries, though not as common, are similar to AGM batteries in that they also use suspended electrolytes, except that the electrolyte is gelled with a silica additive.
These batteries are leak and spill-proof as well as maintenance-free, just like AGM batteries, and can also be mounted in any position. They are best suited for very deep cell applications such as in batteries for electric wheelchairs, RVs and trolling motors.
Gel cells have a couple of advantages. They are perfect for applications that call for slow discharge rates such as in trolling motor batteries. They are also preferred in situations where the battery is to be used in environments with higher temperatures – they tend to last longer than other types of batteries. They are also ideal for use in places with low or poor ventilation.
However, they also have a few drawbacks, though not huge. One of those minor drawbacks is that they usually cost more than their wet cell and AGM counterparts. Another is that they are sensitive to overcharging and require a charger that is suitable for gel cell batteries to prevent premature failure or damage.
Lithium-ion and Lithium Iron
As with many battery products, improvements in technology have led to a rise of consumer and environmentally-friendly lithium-ion and lithium Iron trolling motor batteries on the market. These are among the most advanced deep cycle batteries and best trolling motor batteries available, boasting of high performance, fast recharges, and ultra-lightweight design.
Lithium Iron batteries are a newer entrant into the market but they are even better suited for applications needing long run times while resisting the high temperatures that often come with them. They also have a better safety profile than Lithium-ion.
Regardless, both are becoming very popular with anglers seeking the best performance battery for their trolling motor, especially where weight and efficiency are top priorities.
However, being the most advanced type of battery does mean that lithium-ion or Lithium Iron trolling motor batteries are easily the most expensive. If weight or recharge speeds aren’t much of an issue for you – which is the case for many casual anglers – then an AGM or wet cell may offer everything you need for cheaper.
Dual Purpose or Deep Cycle?
A trolling motor battery is either dual purpose or deep cycle, both of which gradually discharge electricity over long periods to ensure the motor has enough power.
Dual Purpose Trolling Motor Battery
A dual-purpose trolling motor battery has two functions – starting and deep cycling the motor.
This makes them a versatile option as they can start the motor while offering decent deep cycling, making them a good option for various onboard motors and electrics.
If you want a single battery for different equipment, then a good dual-purpose battery is recommended. Think of a dual-purpose battery as a jack of all trades.
However, while they offer deep cycling, the performance of this function isn’t on the same level as a dedicated deep cycling battery. It’s also more susceptible to failure when completely discharged, although this is easy to avoid by always recharging after use.
Deep Cycle Trolling Motor Battery
A deep cycle battery won’t crank engines but offers more efficient deep cycling, meaning the battery will last significantly longer than a dual-purpose battery. This battery should also be safer to discharge, as it can handle deeper discharging compared to dual-purpose batteries.
Better still, a deep cycling battery can offer an impressive performance even when smaller in size, so you can invest in a smaller, more affordable battery that still offers great amp hours (more on that below).
As it focuses on deep cycling, the battery isn’t suitable for starting motors, so you’ll want to ensure that you have a dedicated starting battery when buying a deep cycle battery.
Ampere Hours (Ah)
The ampere-hours (Ah) is the unit of measurement for total charge inside a trolling motor battery. Simply put, the number of Ah is how much electricity is stored inside which is used to power the motor – the higher the Ah the longer the battery lasts.
There is no single best Ah rating for a trolling motor battery, as the needs of each angler will influence how much charge is necessary.
For instance, a smaller battery with a rating of 25 Ah used for a fishing kayak will offer similar runtime to a 100Ah battery that is used for a larger and heavier vessel that is moving at constant high speeds, as things like the weight and speed of the boat will drain a battery quicker.
Of course, a general rule of thumb is that the higher the Ah number the better, as it means you’ll get even more charge from the battery so you can fish for longer. Higher Ah ratings often mean a more expensive battery, although this is often worth the investment when fishing frequently.
Small batteries tend to have around 25 Ah, while mid-sized batteries hover around 50 Ah, with the largest batteries having 100+ Ah.
A great way to determine how much battery charge is provided by the Ah is by measuring it against the amp draw of your motor. For example, if the motor uses 25 amps at high speed, a 100 Ah battery would last four hours.
Again, the weight of the vehicle and the speed of the motor will influence the amp draw, so bear this in mind when looking at ampere-hours.
Buying Tips for a Trolling Motor Battery
As we’ve mentioned, each person will have different needs and preferences when it comes to a trolling motor battery.
From the size of your vessel to the frequency of your fishing to the amount you can afford to spend, there are countless factors that will determine what exactly is the best trolling motor battery for you.
Check all the buying tips below to make the process of choosing the right battery much easier!
Most trolling motor batteries are 12V, meaning they’ll power any 12V motors and electrics on board the boat. However, a more powerful trolling motor for heavier boats may require 24 Volts, so you’ll need two 12V batteries in that case.
Unless you have a high-end motor then you’ll probably have a 12V motor, so most trolling motor batteries have a suitable voltage to power your motor.
The more durable the battery the longer it will last, so keep an eye out for features that highlight the durability of the battery. For example, AGM batteries are completely sealed within their casing, making them less susceptible to water damage, leakages, and issues from vibrations.
However, AGM batteries are much more expensive than wet cell batteries, so remember that the additional durability comes with a higher price point. That said, because it ensures a longer-lasting battery, the extra price may end up paying for itself over the years.
How much maintenance are you will put in to keep your battery in working shape?
For instance, a wet cell battery requires some infrequent maintenance, namely topping it up with filtered water and inspecting it for signs of corrosion and cleaning as necessary. Removing corrosion is easy enough, with a basic mixture of water and baking soda removing this with ease.
While this may seem like more hassle than it’s worth, wet cell batteries are very affordable so the need for minor maintenance may be worth the savings.
Conversely, AGM and lithium-ion batteries require no maintenance, meaning you don’t need to worry about checking water levels or checking inside the battery for damage. Once you buy it you won’t need to do any maintenance, although it will cost more than batteries that need some maintenance.
The size and weight of a trolling motor battery may impact the overall performance of the battery so make sure that it isn’t too heavy for your boat. When the weight capacity is reached in your boat the battery will drain much quicker, so look for lighter weight batteries if you’re reaching maximum capacity.
Thankfully, most anglers won’t have too much weight on their boat so a heavier battery may not be a problem. In most cases, batteries weigh between 20-50lbs, with anything below 30lb recommended for anyone using a kayak.
Remember, if you’re using a smaller vessel you need to make sure the battery isn’t too heavy or it may make it less efficient
Should you have lots of weight capacity on your boat, then consider going for a heavier battery if it means you get a much-improved performance.
Furthermore, ifs you need to carry the battery to and from the boat every time you use it, then a lighter, more compact battery is a good idea. Should it be permanently installed then the weight is less of an issue as you won’t need to worry about trying to carry it around!
Always consider the size of the battery before buying it to ensure it’s suitable for your boat. For example, does it offer enough space for larger-sized batteries? If tight on space make sure to choose a battery that is compact enough to fit onto the vessel.
Larger batteries are also recommended if you have a larger boat. The heavier the boat the more power is drained each hour, so a larger battery should be considered if you’re using a bigger watercraft.
We always believe that if you have enough space, go big with your battery. It ensures there is enough charge to comfortably power the motor for longer durations, allowing you to enjoy your time on the water or fishing without worrying about the battery dying after an hour or two.
The lifespan of a trolling motor battery can vary significantly depending on the type you buy. For example, wet cell batteries offer the shortest lifespan, usually offering a maximum of two years with optimal maintenance.
AGM offer significantly longer lifespans, typically averaging between 3-5 years depending on the quality of the battery, while newer lithium-ion batteries offer as much as 10 years.
Again, this does mean a higher price point, although it often works out similarly priced (if not cheaper) to buying several cheaper-priced batteries over the same period.
Bear in mind that the lifespan of each battery is far from guaranteed just because it is either a wet cell or AGM. Some AGMs are better than others, meaning you may find one that lasts up to 4 years while others struggle to last this long.
Check online reviews to see what buyers are saying about the lifespan of the battery, while looking at the warranty may give some insight, as longer warranties are often a good indicator of a decent lifespan.
How quickly do you need to recharge your batteries? For those frequently using their trolling motors, quicker charge time is desirable as it means less time waiting and more time fishing.
If you want the fastest recharging times, then AGM batteries are the best options. They charge to 98%, meaning their recharges are quicker and fuller, so they are generally the most convenient.
Also, the battery charger (check out our battery charger guide) is an important consideration. Those that bulk charge tend to offer better bursts of short charges, so they probably aren’t the best for fully recharging the battery. Instead, look for voltage regulation chargers, as these offer full and fast charges.
Top 10 Trolling Motor Batteries
Universal Power Group 12V 100Ah Battery
This 12V deep cycle battery from Universal Power Group is a solid choice for a trolling motor, with the versatile battery being a popular option for all kinds of outdoor recreation, including fishing, camping, and using on RVs.
Providing an impressive 100Ah, the battery should offer enough charge to power trolling motors on boats small and large. You can use it with more powerful motors and still expect plenty of runtimes, with the 100Ah lasting a good length of time even on more draining motors.
For instance, if your motor draws 25Ah then the battery will still offer enough charge for around four hours – perfect for most fishing trips on the water. The performance is even better when the motor and boat are smaller, so it’s a fine choice for many types of fishing scenarios.
As an AGM battery, you don’t need to worry about maintenance. It’s completely sealed and won’t require fluid top-ups, so there should be very little to worry about in terms of maintenance.
This also means the battery is mountable in various positions, which is good news for anglers that need to maximize space on their boat. It weighs just shy of 64lbs and measures 12.17” x 6.61” x 9.16”, so bear this in mind if you’re short on space on your boat.
Being an AGM also means the battery handles vibrations and shocks without lowering performance. If you’re on choppy water or driving at higher speeds the battery performance won’t take a hit, and you won’t need to worry about leakages either.
The lifespan of the battery will vary depending on how you use it. For instance, completely discharging each time before recharging will significantly lower the lifespan to less than a year, so aim to not completely discharge when using the battery to ensure it lasts much longer.
It’s widely recommended that you discharge to 50% with the battery to ensure longevity, as this is the best way to maximize the lifespan to around 3-5 years.
- High amp hours for the money
- SLA/AMG maintenance-free battery
- Long-lasting 100Ah high capacity
- Can be mounted in various positions (potentially space-saving)
- On the heavy side at nearly 64 lbs
Renogy 12V 100Ah Rechargeable Deep Cycle Battery
Renogy is a battery manufacturer that utilizes GEL battery technology, which is similar in performance and durability to the AGM batteries. For instance, the battery is completely sealed to eliminate the risk of leaks, while the recharging rate is also impressive like with an AGM.
It’s a standard 12V battery with 100Ah, offering lots of charge for both small and large motors alike. Most people tend to use batteries of this size for large boats and motors but it will also perform well on kayaks and smaller vessels too.
As a deep cycle battery, it offers a lengthy source of power for your motor, typically providing several hours’ worth on a single charge. When going at lower speeds you can expect capacity to remain high, with only the longest trips reducing it to below 50%.
If you don’t mind dropping below 50% and your trolling motor isn’t too draining, it could last you an entire day’s worth of fishing uninterrupted.
That said, it’s recommended to avoid completely discharging the battery, as a 50% discharge rate should result in up to 1000 cycles, so it should last a good few years with the right handling.
Much like AGM batteries, GEL batteries such as this can be mounted in any position as there is no risk of leakages. It weighs 67lbs so isn’t the lightest battery – this is often a sacrifice you need to make for a higher Ah rating!
So, bear in mind if your boat is close to maximum capacity, as adding extra weight may reduce the efficiency of the battery.
- Gel cell construction – maintenance-free and long service life
- Spill/leak-proof (does not have to be mounted upright)
- Slow discharge rate for reliability
- Great for applications with high temperature or low ventilation
- More costly than most similar size AGM batteries
- Comparatively heavy (but acceptable for this capacity)
VMAX MR96-60 AGM 12V 60AH AGM Deep Cycle Battery
VMAX has a reputation amongst anglers for being one of the best battery manufacturers around and the MR96-60 is the perfect example of why this is the case.
While you’ll find many batteries with a 60Ah rating, this VMAX is a great option for small and medium-sized boats. It has a reputation of being one the best trolling motor batteries in its class, offering rock-solid performance and a long lifespan.
This is made possible by the premium quality design of the battery, which features military-grade plates that cope with vibrations much better than most other batteries, resulting in a much more efficient and durable battery.
The 60Ah rating is ideal for trolling motors ranging from 30-50lbs, offering around 2-3 hours of runtime on high settings and about double this on lower settings, although the draw of the motor will also influence the runtime.
In any case, it offers plenty of charge for most fishing excursions, save for those 12+ marathons that some anglers enjoy.
High speeds will reduce the runtime of the battery though, so if you need high speeds for long periods of fishing and use a large boat and motor, then a 100Ah battery may be a better choice – check the review of the MR127 below for more info on a great VMAX 100Ah battery.
At 45lbs it is a good 20lbs lighter than most of the larger 100Ah batteries we’ve included in this list, so if you’re concerned about adding too much weight to your vessel then this lighter battery is a great alternative, still offering plenty of power while being suitable for most trolling motor sizes.
Also, as an AGM battery, the contents are completely sealed so there is no need to worry about leaks and you can mount it in various positions. In fact, as a more compact battery (9″x 5.5″ x 8″) it is a good choice for boats that are lacking space.
The MR96-60 is a deep cycle battery so it should last for many years, possibly around 4-5 if you avoid completely discharging each use.
- AGM SLA sealed and maintenance-free design
- Can be mounted in multiple positions
- Great for small to medium size trolling motors (30-50 lbs trust)
- Military-grade plates for longevity and performance
- Potentially reduced capacity with high-speed use and/or use with electronics such as fish finders
Interstate Batteries Sealed Lead Acid (AGM) Deep Cycle Battery
If you’re looking for a budget-friendly trolling motor battery that is suitable for smaller motors, then the DCM0035 is a great buy. Costing less than the others on our list, this 12V 35Ah deep cycle battery offers everything you could want for a smaller trolling motor and boat without breaking the bank.
While the 35Ah battery can handle up to 40lb trolling motors, it tends to perform best with motors ranging from 18-30lbs. When paired with these motors you can expect as much as 5 hours of run-time depending on the speed settings.
Lower speed settings on smaller boats with less powerful motors are where this battery really shines – it’s the perfect choice for solo trolling excursions on kayaks and similar-sized boats.
Not only that, it’s a compact battery measuring 7.7”x 5.2” x 6.3” and weighing just 23.8lbs. This makes it one of the smallest and lightest batteries on this list, highlighting just how perfect the battery is for smaller boats.
Being an AGM battery means it requires virtually no maintenance and it will handle vibrations without lowering the charge.
As mentioned, this is a deep cycle battery, so expect a good few years of use – most report it works for up to four years without any problems, which is certainly impressive given the low price point!
- Exceptional value, budget-friendly
- Sealed with no maintenance requirements
- Lightweight and compact
- Great for smaller boats and kayaks using small trolling motors
- Smaller capacity makes it unsuitable for bigger boats/trolling motors
- No threaded posts for easy/ quick hook up (there are solutions to this, however)
VMAX Li-Iron 12V 100AH Marine Deep Cycle Lithium Battery
VMAX may have a reputation for making some of the best AGM trolling motor batteries, yet the company is not resting on its laurels, producing a new line of batteries utilizing lithium iron phosphate technology. The result is their latest lithium battery offering, the LFP27-12100 LiFePO Li-Iron 12V 100AH Deep Cycle Battery – one of the most advanced trolling motor batteries that money can buy today.
The powerful 12V 100Ah battery is designed for use with trolling motors with up to 60lbs of thrust, offering deep cycling charge that can power a 55 lb thrust trolling motor for as much as 6-9 hours continuously at low to medium speeds.
Better still, this “Lithium Series” battery also offers some of the fastest recharge times. You can expect this battery to recharge in a fraction of the time it takes a wet cell or AGM batteries, typically taking around 1-2 hours to charge from 50% capacity to 100%. Let’s also not forget to mention its unrivaled longevity – the Vmax Lithium-Iron battery should last anywhere up to ten years with proper care.
As for performance features, the LFP27-12100 is built with a powerful battery management system that prevents short circuits, protects the battery from high/low voltage as well as a built-in sensor that monitors and protects it against excessive heat during charging/discharging.
This deep cycle lithium battery offers even more convenience by being one of the lightest batteries that money can buy, weighing in at just 25lbs. Considering similar-sized AGM and wet cells weigh two to three times more than this, you can significantly reduce your boat’s weight with this battery.
This alone makes it one of the best trolling motor batteries for smaller boats and kayaks where one needs to closely manage the weight capacity. Its relatively compact dimensions (12″ x 6.7″ x 8.2″) are also perfect for applications where space is at a premium.
One of the top considerations with the lithium iron battery is safety. It is safer to operate than lithium-ion because of its ability to stay cooler during higher temperatures/overcharging and long runs and therefore is less likely to experience thermal runaway, a condition that could cause the battery to become unstable and burn or explode. This is a plus when dealing with lithium batteries.
In addition to its long run times, long long life and high energy density/efficiency, the VMax Li-Iron Lithium battery boasts of an advantage over other battery types when it comes to storage. That’s because lithium iron batteries can be stored for up to a year with minimal charge loss.
Another Feature to like about this battery is that lithium iron phosphate is non-toxic and more environmentally friendly than other battery types such as lead-acid and even lithium-ion.
Transport is made easy by integrated carry handles. Lastly, the VMax Lithium Iron battery comes with a 5-year pro-rated warranty.
P.s. Be sure to pair your battery with a charger that is compatible with lithium-iron batteries. Here are a few that are compatible with this battery:
- Powerful, advanced Lithium-Iron battery technology with a host of top features
- Fast charging and longer runtimes – get out on the water faster, go farther and longer
- Ultra-lightweight and compact – weighs just 25 lbs!
- Maintenance-free and no venting required (unlike lead-acid batteries)
- Can run through deeper cycles and has a longer lifespan than other trolling motor batteries
- Greater upfront cost than other types of batteries – its advantages come at a price
Mighty Max Battery 12V 100AH Battery
Mighty Max is another well-known battery manufacturer amongst anglers, with their batteries offering impressive power and durability without being too expensive. If you’re in the market for a powerful battery that can power your trolling motor all day long, be sure to check out this whopping 100Ah battery.
Simply put, this 100Ah deep cycle battery offers enough power for any type of fishing trip out on the water. The power of your motor will influence how long it lasts of course, although it should have enough charge to power the bigger motors for most of the day.
For instance, if you’re using the trolling motor at low-speed settings then the battery will likely last up to 12 hours, which is as long as it gets for a day of uninterrupted fishing! This will work with motors of varying powers, whether its 30lbs, 40lbs, 50lbs, or 60lbs of thrust.
When set to medium power you’ll get an impressive 6-7 hours of power, while the highest speed settings will still net you about 2-2.5 hours of charge. The battery will do it all and then some, although there are some things to remember with a battery this big.
For one, it’s a massive battery that weighs 63.9 pounds, so it’s going to add some serious weight to your boat. It’s also very bulky, measuring 12.17”x 6.61” x 8.30”, so if you don’t have much space on your boat it may not be the best option, although you can mount it in any position as its an AGM.
Also, as an AGM it has a sealed design that improves durability and performance, ensuring no leakages or loss of charge from vibrations, while you won’t need to top up with fluids either. This also ensures that the battery will last for a good few years – around 3-4 in most instances.
- Long service life SLA trolling battery with zero maintenance
- Can be mounted in almost any position
- Long-lasting 100 Ah power – good choice for bigger trolling motors
- Performs well under varying temperatures
- As with any battery of this size, weight (63.9 lbs) and bulk are a concern
- Some have found the terminal posts to be less than ideal for connections
Optima Batteries 8016-103 D34M BlueTop Starting and Deep Cycle Marine Battery
Optima batteries are very popular and among the best batteries for trolling motors, offering the perfect balance of performance and versatility. In fact, they are just as popular with RV owners as they are with anglers, many of whom consider these the gold standard for recreational vehicle batteries!
The 8016-103 D34M is easily one of the company’s most popular trolling motor batteries, offering a range of features that make it one of the best in the market, despite not being the largest battery available.
A 12V 55Ah AGM battery, it’s like many other batteries on the market, yet it outperforms so many batteries that have the same specs. For instance, the 8016-103 D34M uses “SpiralCell” technology, which consists of spiral lead plates for more efficient energy delivery and enhanced durability.
Compared to other batteries that use flat plates, the spiral plates result in a battery that is 15 times more resistant, while it can also take around three times more charges. Simply put, this will outperform most 12 55AH batteries and last much longer – expect exceptional value for money with the 8016-103 D34M.
There is another amazing selling point for this battery – it is capable of producing 750 cold-cranking amps, allowing you to start the motor even in cold temperatures. Essentially, it’s a starter and a true deep cycle battery, being one of the few dual-purpose batteries with deep cycling that is just as efficient as a dedicated deep cycle trolling motor battery.
If you have lots of on-board electronics and want a reliable battery for all your devices and motors, look no further than the 8016-103 D34M.
The 8016-103 D34M also boasts one of the best recharging rates we’ve seen in a battery in this size range. Thanks to the low internal resistance, it’s capable of recharging to 90% in under an hour, meaning less time waiting around and more time on the water.
As an AGM battery, it’s very durable and can be mounted in any position without the risk of leaking. Measuring 10” x 6.75” x 7.8” and weighing 43.5lbs, it’s lighter and more compact than many similarly-sized batteries, being the perfect battery for small to medium-sized boats.
- One of the very best batteries on the market for trolling motors today
- Dual-purpose performance – can be used for starting as well as deep cycle applications
- Totally maintenance-free and can be mounted in nearly any position
- Unique SpiralCell design for up to 3 times more charge cycles than other marine batteries
- Fast charging for more fun on the water – up to 90% charge in less than an hour
- More expensive than other AGM batteries of similar size and capacity
Mighty Max Battery 12V 55Ah Deep Cycle Battery
This 12V 55Ah deep cycle battery from Mighty Max is a great option for anyone looking for an affordable battery suitable for small and medium-sized boats. It’s a versatile battery that will work well with motors of varying power, performing best with 30lb-50lb thrust motors.
If you’re thinking of making the jump from a smaller battery, we think this is a great option for seeing just how much of a difference the additional power makes. For instance, using this 55Ah battery on a 30lb motor should give up to 4 hours of power – and that’s at higher speed settings!
Take things down a notch and expect the battery life to last even longer, giving anywhere between 6-8 hours depending on the motor draw and water conditions. Even with this, expect a good bit of charge to be left, as the battery will struggle to completely discharge unless using all day at high speeds.
Despite offering a lot more power than smaller 35Ah batteries, it is a surprisingly lightweight and compact model. It only weighs 38.5lbs, which is not much heavier than smaller batteries and often lighter than other 55Ah batteries, highlighting its suitability for small/medium boats.
Of course, being an AGM means you can install it in any position without worrying about it leaking, so you should be able to squeeze it in even when short on space. This also means no maintenance or diminished performance from vibrations, with the battery being incredibly durable and reliable in most conditions.
This battery is one of the best you can get for a 30-35lb trolling motor. While many opt for 35AH batteries for these motors, investing a little more in a battery such as this will significantly increase your trolling time no matter your speed.
- An affordable option for trolling motors for small to medium size boats
- SLA/AGM no maintenance and leak/ spill-proof design
- Relatively compact and lightweight for a 55 Ah battery at under 39 lbs
- Long runtimes and able to tolerate varying temperatures
- Lack of convenient screw down-type battery posts (must use bolts, washers, and nuts)
ODYSSEY Trolling Thunder Marine Dual-Purpose Battery
If you’re looking for a reliable dual-purpose trolling motor battery then this 12V AGM battery is certainly worth considering. While most dual-purpose batteries offer starting power and decent deep cycling, this model has some of the better deep cycling functionality found in these types of batteries.
This means you can rely on this battery to start your motor and provide a consistent charge for a good length of time, while also offering an impressive lifespan. You get plenty of value for money on this trolling motor battery from ODYSSEY. I would rate this one right up there with the Optima BlueTop, which is considered the best trolling motor battery by many in the industry.
In fact, the ODYSSEY one of the most versatile and highest quality trolling motor batteries you can buy. Not only is it ideal for starting motors, but it will also provide power for the motor and various onboard electronics, so if you need an all-in-one solution then this is a battery to check out.
Durability is important for any trolling motor battery and this model has it in spades. Being an AGM battery means it’s completely sealed so it won’t leak while being more resistant to vibrations. It also has cold-cranking capabilities, meaning the battery will function in even the most extreme colds.
One critical feature in the ODYSSEY batteries is that they are made with almost 100% pure lead (99.99% to be exact) instead of the traditional lead alloy that most AGM batteries employ. Pure lead is thinner than its alloy counterpart which allows for more plates in the battery, making for a more powerful and long-lasting battery.
As a result, the battery boasts a very impressive lifespan that can reach upwards of 4-5 years, and that’s even with regular use and discharge of most of the battery. For example, the battery offers up to 400 cycles at 80% depth charge, so expect it to last for many years to come!
The durability is quite surprising because dual-purpose batteries traditionally struggle to last as long as a dedicated deep cycle battery.
This is because of the difficulties of balancing frequent starting power with the constant depths of discharge without permanent power loss, with the ODYSSEY battery being one of the few dual-purpose models to pull it off.
Simply put, there are few dual-purpose batteries on the market that offer a better combination of excellent starting power, deep cycling operation and long-lasting service.
At 65Ah the battery offers an impressive charge for motors of varying sizes, working with anything ranging from 30-55lbs of thrust. Runtimes will vary depending on speed and power draw, with around 8 hours on low settings, 4 on medium, and around 2 hours on high setting.
Considering this is a dual-purpose battery, these runtimes are nothing short of outstanding, highlighting how much value for money you get when investing in this versatile trolling motor battery. As a bonus, this is one of the few batteries made in the USA. Actually, ODYSSEY manufactures its batteries out of two plants – one in Missouri and the other in Wales in the UK.
- Excellent value for those looking for a high-performance dual-purpose battery
- AGM sealed, maintenance-free construction
- Made with pure lead plates instead of lead alloy for better power and performance
- Exceptional service life – you can expect 3- 10 years (can be stored for up to 2 yrs)
- Made in the USA and UK with up to 4 yrs limited replacement warranty
- More expensive than most deep cycle-only batteries
VMAX MR127 12 Volt 100Ah AGM Deep Cycle Battery
We’ve mentioned how there are certain batteries that have the same specifications but one can outperform the other due to superior manufacturing and the VMAX MR127 is the perfect example of this.
One of the best 100Ah deep cycle batteries on the market, it may cost more than most other 100Ah batteries but it shines in its performance. This an exceptional quality battery that is highly recommended for anglers that want to spend many hours trolling at various speeds without worrying about the battery dying.
The MR127 is at its best when paired with trolling motors with around 30-40lbs of thrust. With these motors expect up to 12 hours of runtime on lower settings, 7 hours on medium, and 2.5 hours on high settings.
While the battery excels with these motors, that’s not to say it won’t handle more powerful motors, up to 100 lbs of thrust. For instance, if you pair it with a 60lb thrust motor it should provide around 8 hours on low, 4 hours of power on medium, and just under 2 at high.
Of course, weather conditions and the weight of the boat will influence this, although it’s safe to say that this massive battery is well equipped for long excursions on the water at varying speeds. The fact you can get several hours at top speeds showcases just how impressive this battery is – smaller batteries just don’t offer anywhere near the same run-time at top speeds.
The one drawback of having all this power is the battery is on the bigger side. It weighs a whopping 68lbs and measures 7” x 9” x 12”, so it’s not going to fit in some smaller boats and will add a good bit of weight to your overall capacity.
That said, it’s an AGM so it can be mounted in any position that works best, as there is no chance of leaking or vibrations causing any performance issues. Because of this, it’s usually more popular for medium to large-sized boats, although if you have the space and capacity for it on anything smaller it’s certainly worth squeezing it in.
- Heavy-duty 100Ah sealed AGM battery for medium to high thrust trolling motors
- Made with heavy-duty lead alloy grids for power, durability and long service life
- Longer runtimes for anglers looking to maximize their time on the water
- Though a big battery, it can be mounted in any position for space savings
- The heaviest trolling motor battery on our list at 68 lbs
- More expensive than many AGM dedicated deep cycle batteries
Trolling Motor Battery FAQs
How long will a trolling motor run for on a battery?
This depends on the ampere-hour (Ah) of the battery, which is the measurement of the amount of ampere consistently delivered by the battery per hour. The higher the ampere-hour the longer the battery lasts, with trolling motor batteries having Ah ratings ranging from 25Ah to over 100Ah.
The amount of ampere drawn from the battery depends on the trolling motor and the conditions on the water. For instance, a 100Ah battery will last for four hours when the draw is 25Ah but could last up to ten hours if the ampere draw is only 10Ah.
So, the Ah rating determines how long the battery will run the motor. If you have a large motor and boat, then you’ll want at least a 100Ah battery, while smaller boats and motors should be fine with ratings between 25-75Ah, although you may prefer a larger battery regardless to ensure maximum running time for the motor.
How often should I charge the trolling motor battery?
A trolling motor battery should always be charged immediately after using it. This will avoid the battery running out in the middle of using it while also ensuring it remains in optimal condition for longer.
Charging is quick and easy, so simply charge it after each use. You can also charge on-board the vessel too if you have a portable charger or solar panels. Always monitor charging and avoid overcharging as this can damage the battery.
What size of trolling motor battery do I need?
There are a few factors that will influence what size of trolling motor battery is most suited to your situation.
For example, the size of your boat and trolling motor will determine what size of battery you need, with larger vessels and motors needing a battery with enough Ah to power everything without draining quickly.
Smaller boats and motors have more flexibility when it comes to choosing batteries, with smaller batteries being a great way to save money while still having a decent size battery for your needs. That said, bigger batteries on smaller boats is never a bad thing, as it means longer runtimes for the motor so more fishing.
Consider things like the size of your boat, how powerful your trolling motor is, and how often you go fishing when choosing a battery size.
How many batteries does a trolling motor need?
This depends entirely on the voltage of the trolling motor you use. In most cases, trolling motors are 12V so you only need a single 12V battery, which is the most common type available.
Should your motor be 24V then you will need two 12V batteries unless the battery itself is 24V (although this is not that common), so two is the most likely requirement in this situation.
Also, never mix two different types of trolling motor batteries. If you need two, always ensure they are the same type, i.e. two AGM batteries, two wet cell batteries, or two lithium-ion batteries.
How long will a trolling motor battery last?
This depends on the type of battery and how well maintained it is. For example, wet cell batteries have the shortest lifespan, typically a maximum of two years, which can be achieved if you regularly maintain it by topping up fluids and checking for corrosion.
An AGM battery has a longer life expectancy, usually between 2-4 years depending on the quality of the battery. These batteries have virtually no maintenance so you’ll likely get the maximum lifespan from an AGM unless you damage it or store it incorrectly.
Lithium-ion batteries are relatively new to the market but boast the best lifespan, averaging at around 10 years in most cases. Again, this does come with a higher price but given the longevity of the battery, there is certainly value for money when investing in this type of battery.
Are AGM batteries better than wet cell batteries?
Yes, AGM batteries are widely considered to be better than wet cell batteries. This because it has double the lifespan of a wet cell battery, charges faster and fuller, while also requiring no maintenance due to having an enclosed body.
While AGM batteries perform better than wet cell batteries, they do cost much more money, so don’t immediately assume it’s the best trolling motor battery for you. Of course, if you have the money available, we do recommend an AGM battery as they’re generally much better and offer good value for your money.
Do I need a deep cycle battery?
In most cases, you will want a deep cycle battery, which provides a consistent electric charge over long periods. These types of batteries are the best option for trolling motors because the motor is usually operating for several hours, so the more charge the battery offers the better.
However, dual-purpose trolling motors do have their advantages, functioning as both a starter battery and deep-cycle battery, generally with far less efficiency as a dedicated deep cycle battery (the two dual-purpose batteries in our review, however, are exceptions to this as they excel at both starting and deep cycle operation).
Do I need to clean the trolling motor battery?
While some minor maintenance is often needed for a trolling motor battery, it won’t need to be cleaned that much. Beyond wiping off mud and grime or removing signs of corrosion, there isn’t much cleaning needed to properly maintain the battery, especially if it is an AGM.
How should I store the trolling motor battery?
If you aren’t permanently installing the batter onto your boat, then it’s a good idea to store it in a cool, dark location. Think your garage or in the basement, although be mindful of keeping it anywhere too warm – just below room temperature is ideal.
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