The Best Battery for a Trolling Motor

One of the most important components of a trolling motor is the battery. Choose a good one and you will enjoy many hours of trouble free use but, like most things in life, get the wrong one and it can be a stressful and expensive mistake.

Table of Contents

One of the most important components of a trolling motor is the battery. Choose a good one and you will enjoy many hours of trouble free use but, like most things in life, get the wrong one and it can be a stressful and expensive mistake.

Today we are going to take a look at the best batteries for trolling motors currently on the market. We have looked at various aspects such as price, performance, reliability and ease of use to help you pick the right one for your needs.

So, whether you are sports fisherman or commercial angler and whether you work on lakes, salt water or rivers, we have you covered.

But, before we dive into the details, here's a quick overview of what we believe are the top trolling motor batteries - and remember all of them are available at the keenest prices from Amazon.

Things to Consider When Choosing A Trolling Motor Battery

When it comes to choosing the right battery, there are several key factors that you need to consider. These include the power rating (often listed as amperage hours), the price, and the reliability - which usually means choosing a model with a good guarantee. Let's take a closer look at these factors now , and discuss their importance.

Battery Technology

Power Rating

Battery Type
There are 2 main types of batteries that are commonly found on trolling motors, namely Lead Acid Wet-Cell & Absorbent Glass Mat or AGM. Lets take a quick look at both types.

Lead Acid Wet-Cell (LAWC) Batteries

This kind of battery technology is the most common they are cheaper to manufacture (and so cheaper to buy) abut they stand up well to the rigors of continual the charge/discharge cycle that's associated with everyday use of a trolling motor. They usually cost around $100 but will typically last for around 2 years under normal conditions. On the downside they do require some maintenance (but its pretty straightforward and just involves keeping them topped up with water). Other downsides are that they are prone to leakage and can be damaged by reasonably heavy vibration although, in most circumstances, the offer a good price/performance ratio.

Absorbent Glass Mat (AGM

This technology is more expensive but tends to be more reliable and offer a longer battery life. AGM lead-acid batteries offer superior power compared to LWC ones and so are ideally suited to the demands of today's higher performance trolling motors. They tend to be more reliable and have better cycling performance (i.e. they take less time to change and offer a longer power output with less drop off towards the end of the charge) - they also suffer less from leaks and gassing but, of course, they are considerably more expensive - often twice as much. While a traditional deep cycle battery might last 1-2 years, an AGM deep cycle battery will usually last twice as long.






Amperage Hour Rating
You can think of a battery's amperage hour rating as being similar to the gas tank of a car.   Everything else equal, a battery with a 115 amp hour rating will last longer than a 100 amp hour rated battery.  In more technical terms, a 100 amp hour rated battery can deliver 100 amp hours of current to a trolling motor.  So if a motor was running at low speed and pulling 4 amps, the battery should last around 25 hours.  (100 amp hour rating / 4 amps = 25 hours).  Similarly, if the motor was running at top speed and pulling 40 amps, the battery would last for 2.5 hours (100 amp hour rating / 40 amps = 2.5 hours).  For more information on understanding battery run times, please see our guide on understanding trolling motor run time.   
For trolling motors use, we recommend a battery with AT LEAST a 100 amperage hour rating, a Group 27 rating and 175 minutes of Reserve Capacity (RC). Due to shipping restrictions, we currently do not sell marine batteries at TrollingMotors.net. However, both types listed above should be widely available in most areas.

Battery Tips
Never mix battery types, nor old batteries with new batteries. 
Charge batteries as soon as possible after each use – leaving batteries in a discharged state will decrease their longevity and performance.
Periodically check wet-cell battery fluid levels and top-off as needed 
Check terminal connectors periodically for signs of corrosion – clean with a paste of baking soda and water. 
Store batteries in a cool, dry place in the off-season and maintain a trickle charge.
 

10 Best Trolling Motor Batteries Compared

Battery:Type:Reserve:Capacity:Group:Weight:
1. BPS Pro Series AGM X-900AGM195 min81 Ah2760.0 lbs
2. Odyssey Trolling ThunderAGM135 min68 Ah34M49.5 lbs
3. BPS Pro Series Deep CycleAGM150 min56 Ah2765.0 lbs
4. VMAX Charge Tanks MR-137AGM230 min120 Ah3175.0 lbs
5. Optima Blue Top D31MAGM155 min75 Ah3159.8 lbs
6. North Star Ultra AGM31MAGM220 min103 Ah3175.0 lbs
7. Trojan T31AGM177 min100 Ah3167.0 lbs
8. Universal Deep CycleAGM-100 Ah2763.9 lbs
9. Duracell Ultra SLI31MDCFlooded-105 Ah3159.0 lbs
10. Interstate Marine SRM-29Flooded210 min-2959.7 lbs

7 Things You Must Know Before Buying Trolling Motor Batteries

Because they look (in most cases) like a simple black plastic box, its easy to think that batteries are Even though batteries may seem like a simple and straightforward purchase; if you want to find the perfect one for you and your boat – there are a few things you should know. In this article, we’re going to cover all the critical factors that make a great trolling battery.

1. Sealed AGM vs. Wet Cell Lead Acid

Lead acid batteries are what you get used to hearing about. These use an electrolyte (usually water) to flood the lead plates, and as a result are very heavy. These batteries also require maintenance because you have to monitor the fluid levels and check for corrosion.

These batteries can be known to have vibration problems which reduce the overall life of the battery. All in all, lead-acid batteries are the norm, but they tend to have a shorter life compared to AGM style marine batteries.

2. What Size Battery for Trolling Motor?

Your trolling motor determines what size battery you need. It’s important to know what group size battery you need. If you do not have the right battery, you may not have enough power to turn the motor over, and you could find yourself stuck out on the water.

For good run-time, you want to have a group 24 battery that gives you 70-85 amps per hour at 12 volts. This battery works well for smaller boats.

For better run-time, you want to have a group 27 battery that gives you 85-110 amps per hour at 12 volts. This battery works better for bass boats.

For the best run-time, you want to have a group 31 battery that gives you 95-125 amps per hour at 12 volts. This battery works great for larger bass boats.

3. Get Enough Reserve Capacity

The amount of reserve amp draw is an essential factor to consider when choosing a battery. Reserve Capacity is the amount of time you have until the battery falls below the minimum voltage.

  • A 30-pound motor has a max draw of around 30 amps
  • A 40/45 pound motor has a max draw of around 42 amps
  • A 50/55 pound motor has a max draw of around 50 amps
  • A 70-pound motor has a max draw of 42 around amps
  • An 80-pound motor has a max draw of around 56 amps
  • A 101-pound motor has a max draw of around 46 amps
  • A 112-pound motor has a max draw of around 52 amps

4. Good Warranties are Important

Every manufacturer has a different kind of warranty. Some companies offer ten-year warranties, some provide lifetime warranties, and some only offer two or three months. You want to make sure to protect yourself and go for a battery with a decent warranty.

Of course, it’s important to look at the reviews and consider the average life of a battery vs. the warranty, but you should go for a battery with a good warranty.

5. Your Batteries are only as Good as Your Charger

When choosing a battery, it’s equally as important to select a good charger that is compatible with the battery you are using. Selecting an onboard charger that does not work well with your battery will not only cause you to get less time out of each use, but it’s also going to shorten the life cycle of your battery because you have to charge it more often.

If you are going to invest in a good battery, you should make sure to budget for an excellent charger to pair with it. This choice will ensure you get a good life out of your battery.

6. Name Brands vs. Off Brands

If you are undecided between a name brand battery or an off-brand, look at the reviews and get opinions from other people. Just because something does not come from a major manufacturer does not mean it is not as good.

If you look up an off-brand battery that is forty dollars cheaper than the name brand and it has fantastic reviews and a good warranty, I’d go for it.

7. Weight is Good, More Lead in the Core

The saying “the bigger, the better,” is right when it comes to marine batteries. More weight equals more lead in the core. More lead in the core means a longer run time and, in the end, – the longer you run your battery without charging the better chance you have of extending the life of the battery.

The only downside to a larger battery is carrying it around, but if you have a place to store your boat where the battery won’t be constantly exposed to the elements, you might be better off going for a larger battery.


AGM Trolling Motor Battery Reviews

1. VMAXTANKS VMAX V35-857 12 Volt 35AH AGM Battery

VMAX857 AGM Battery 12 Volt 35AH Marine Deep Cycle HI Performance Battery ideal for boats and 18-35lb minn kota, minnkota, cobra, sevylor and other trolling motor (12V 35AH, GROUP U1)
  • Dimensions: L=7.7 inch W=5 inch H=6.1 inch
  • Heavy Duty Grids: VMAX heavy duty lead tin alloys provide an extra margin of performance and service life in either float or cyclic applications, even after repeated over discharges.
  • Maintenance Free Operation: There is no need to check specific gravity of the electrolyte or add water to VMAX tanks during float service life. In fact, there is no provision for this type of maintenance.

BPS Pro Series AGM X-900:Reserve:Amp @10Hr Capacity:CCA:Weight:
Group 31220 min13701150 A65 lbs
Group 27195 min1080930 A60 lbs
Group 24160 min1010840 A45 lbs

This is the best trolling motor battery for the money. The X-900 is a pure lead AGM battery with a significantly faster recharge up against the competition. This battery cycles up to 900 times at 50% discharge and ranges from 1,010 to 1,370 marine cranking amps.

The manufacturer also offers a nice four- year warranty on the battery. Since this one is designed with AGM technology it requires very little maintenance, a strong powerful turnover, and a fast recharge. This is an excellent battery for serious anglers who care about their fishing. This battery will not leave you stranded out on the water.

Nearly all the reviews of this battery are good. People state that the batteries last an average of 4-5 years and maintain a solid charging power throughout the length of their life. Reviewers also said that the battery charges very fast in comparison to others.

One reviewer said that they ran the battery for six hours and it took 10 hours to fully recharge. These batteries are great if you are looking for a reliable battery that delivers constant results for you.


2. Newport Vessels Trolling Motor Smart Battery Box Power Center with USB and DC Ports

Amazon

This battery from Odyssey comes with a cold cranking amp of 880 and operates on average for as many as 10 years. These batteries are known for a long life cycle and low operating costs.

  • Group Size: 34M
  • Reserve: 135 min
  • Capacity: 68 Ah
  • Weight: 49.5 lbs

It can get stored for up to two years without a recharge and still turn over and comes with a 4 or 4-year warranty. The battery is designed to be vibration resistant to prevent shock or unnecessary damage to the battery. This also is what extends the life of the battery. This battery has been tested in extreme temperatures ranging from -40 to 176 degrees Fahrenheit.

Thanks to the AGM design of the battery, it is entirely maintenance-free and requires no checking of levels or time-consuming corrosion prevention. The Department of Transportation also approves the Odyssey battery for being completely spill-proof.

Reviewers state that this is the best battery they have ever had for a variety of purposes. The battery has never failed and when compared to the competition, and outlasts and outperforms at every metric. You will pay a premium for that, but boaters say if you want to find peace of mind and know that you are not going to get stranded far from the boat ramp, the Odyssey battery is for you.


3. FirePower HJTX20HQ-FP Featherweight Lithium Battery

Bass Pro Shops Pro Series Deep Cycle AGM

FirePower HJTX20HQ-FP Featherweight Lithium Battery
  • Lithium Ion Polymer technology
  • All components are designed, manufactured, assembled and packed in one location assuring high quality and consistency
  • Extremely lightweight, 50% to 70% lighter than standard batteries
  • Built-in LED test gauge
  • Increased cranking amps over lead acid batteries

  • Group Size: 30H
  • Reserve: 190 min
  • Capacity: 110 Ah
  • Dimensions: 13.0″ x 6.9″ x 9.6″
  • Weight: 65 pounds

4. Interstate Batteries 12V 35AH Sealed Lead Acid (SLA) AGM Deep Cycle Battery

The VMAX batteries are known for being reliable and rugged. This is the best kayak trolling motor battery due to its size and capabilities. These batteries are incredible at holding up in some of the most extreme conditions from blizzards to treacherous heat.

  • Group Size: 31
  • Reserve: 230 min
  • Capacity: 120 Ah
  • Dimensions: 13″x6.8″x8.8″
  • Weight: 75 pounds

If you deal with extreme environments or are looking for a durable battery that can withstand a beating. This powerful charge battery has a lifespan of eight to ten years. The heavy-duty grids provide extra performance and lifespan even after years of discharges. The manufacturer recommends using only a high-quality brand AGM charger for this battery.

Reviews for this battery are mostly good. This VMAX battery is rugged and capable of withstanding pretty extreme conditions. Reviewers note that the battery holds a good charge and lasts long enough to stay on the water all day. This is a lightweight trolling motor battery that holds a good charge.

They are under warranty for twelve months from the date of purchase. During that period all batteries get replaced. The company recommends checking your charger and panels to ensure they meet the required wattage. If that does not fix your problem, try charging the battery for fifteen hours and reading the voltage meter. It should read over 13.3V.


5. Minn Kota 1820175 Trolling Motor Battery Power Center

Amazon

This battery is the largest deep cycle in the Optima fleet. This feature makes this battery incredibly popular among serious anglers on larger fishing boats. This battery has the power to turn over a larger motor among rough waters.

  • Group Size: 31
  • Reserve: 155 min
  • Capacity: 75 Ah
  • Dimensions: 12.8″ x 6.6″ x 9.4″
  • Weight: 59.8 lbs

The Optima Blue Top is also capable of holding up in extreme temperatures and for long periods of inactivity. This is a great battery for someone storing their boat for the winter or fishing on the water during long, hot days.

This battery has excellent reviews online. People say that the battery is great in hot weather and can go a long time between charges. Reviewers claim to get as long as 6 years out of their Optima Batteries. People also say that these batteries are great for storage because they have a low self-discharge rate, so even after long periods of non-use, they still keep a charge.

We have been running the D31M as a starting battery to power all our electronics and it’s been great. Read our review here.

6. ML35-12 - 12 Volt 35 AH SLA Battery

Amazon

Northstar batteries are known to be very popular for fishing boats. The pure lead AGM design is made in Missouri and is durable and resistant to heat.

When compared to some other batteries of the same price and quality the Northstar has a faster recharge. This one has gotten tested against a few other batteries and nine times out of ten the Northstar AGM charges to 100% faster than the competitors.

  • Group Size: 31
  • Reserve: 220 min
  • Capacity:  103 Ah
  • Dimensions: 12.9″ x 6.8″ x 9.2″
  • Weight: 75 pounds

This battery delivers a continually strong CCA and always turns over quickly. With this AGM battery, you don’t typically have to worry about getting stranded out on the water. This battery is dependable and always fires up when you need it to.

As with the other AGM batteries, it is entirely maintenance free. No checking water levels or cleaning corrosion off the terminals. The battery maintains itself and is durable when stored over long periods of time and holds up in extreme conditions.

Northstar also offers an excellent warranty depending on what kind of battery you get. Typically, they last between three and four years.

Reviews for this battery are good, people have a lot of great things to say about the life cycle and overall power of this battery. Due to its size, it is able to turn over a much larger motor than the competition and to do so even after a long day of use. It holds a longer charge than the competition as well.

The only downside to this battery is the overall size. It is a very heavy battery weighing up to 75 pounds depending on which one you get. In exchange for weight, you get a durable and reliable battery.


7. Optima OPT8016-103 Batteries D34M BlueTop Starting and Deep Cycle Marine Battery

Amazon

Trojan Batteries are known well for their performance over long-term use. The company has a long history of producing quality batteries. Trojan has a ton of eco-friendly benefits factored into its battery design as well.

  • Group Size: 31
  • Reserve: 177 min
  • Capacity: 100 Ah
  • Dimensions: 12.8″ x 6.8″ x 9.4″
  • Weight: 67 pounds

These batteries get designed with an exclusive grid technology that reduces the effects of corrosion and deterioration of the battery. Since the Trojan batteries are designed using AGM technology, they are built to last longer than solid lead batteries. This feature promotes a quality charge and lower operating costs for you.

Reviewers of this battery say it lasts long and performs as well as expected. People also say that the corrosion benefits are significant when the battery gets exposed to adverse conditions like rain and moisture. The only complaint associated with the Trojan batteries is the lack of variety in choices and sizes. If you need a specific type of battery, you may not find it with Trojan.


8. Interstate Batteries 12V 35AH Sealed Lead Acid (SLA) AGM Deep Cycle Battery

Amazon

This battery from Universal is maintenance free and requires no checking of levels or water due to the AGM design. The sturdy build reduces the risk of shock and vibration associated due to excess movement. It also comes with a one-year warranty, but the batteries are known to last between 4-6 years typically.

  • Group Size: 27
  • Capacity: 100 Ah
  • Dimensions: 12″ x 6.6″ x 9.1″
  • Weight: 63.9 lbs

The reviews on this battery are primarily good. Most people say that they are impressed by the life cycle of this battery. Reviewers state that even when tested, the battery lasts all day long and still recharges quickly.


What about Lead Acid Trolling Motor Batteries?

You can’t usually ship wet cell batteries, so you’ll have to pick these up in-store. I have personal experience with Interstate and EverStart Maxx, both are good, cheap lead acid options that should last at least 2-3 seasons if properly maintained with a good marine charger.


Trolling Motor Battery FAQ

How many seasons of use can I get from an AGM battery?

This varies from battery to battery. Some people claim to be able to get as many as 10 years from one AGM battery, whereas others state only getting 2 or 3 years. It depends a lot on the individual battery. Another big factor that determines how many seasons you get from your AGM battery is the charger you use. If you invest in a great charger that is recommended by the battery manufacturer you have a higher chance of getting a longer life cycle out of your battery.

Why are Deep Cycle batteries best for Trolling Motors?

Deep cycle batteries are designed to discharge their power over a long gradual period of time. This is perfect for trolling motors because you may be out on the water for 8 or more hours. For this to happen using a rechargeable battery, you need something that is going to last a large amount of time. Regular batteries will exhaust all their power too quickly whereas deep cycle batteries will ensure you do not get stranded on the water.

How many amps do trolling motors draw?

It depends on the battery, but it typically ranges from 30 – 116 depending on the size and voltage of your battery.

How long can a trolling motor run on a deep cycle battery?

The larger your battery the longer it runs. Typically, for every 25 amps of battery power, you get 4 hours of running time.

What kind of charger do I need for AGM trolling motor batteries?

Every manufacturer recommends a specific charger but its most important to have a charger that has enough amperage and is compatible with an ABM battery. It’s always best to take the recommendation from the manufacturer though. This helps to extend the life of your battery and give you overall better experience.

How important is a Battery Warranty?

Battery warranties are important because you want to make sure you are covered in the event that you need to be. More important than warranties though, are user reviews. Be sure to do your research ahead of time before making a purchase. Some companies offer warranties as long as 5 years and others only offer a few months. If the battery has good reviews and a short warranty, that may mean the quality of the battery is good and the company is confident in that.

How do I find what Group Size my Old Batteries are?

Often times you can find this on the battery or the manual if you still have it. A quick good search should also reveal a better way to find it on your specific battery.

Are AGM batteries worth the price over Wet Cell?

If you are looking for a low maintenance battery with a longer life cycle than a wet cell, then yes. AGM batteries are going to cause you fewer headaches over the long term. It’s definitely an investment in peace of mind.