Best Trolling Motor Battery

Best Trolling Motor Battery Reviews – Buyer’s Guide 2018

Fishing Gear

Trolling motors are indispensable on boats. They ensure you do not paddle your boat around. However, without a good trolling motor battery, the motor is useless. With a motor, you can troll at different speeds, which is ideal when you are saltwater fishing.

The best trolling motor battery will allow you hours of trolling, powering your motor and other on-board gadgets.

Trolling motor batteries are different from car or truck batteries. While car and truck batteries only need to ignite the motor, trolling motor batteries are needed during the entire period you will stay on the water. While most of these batteries may look alike, there are differences in performance.

Best Trolling Motor Battery Reviews

Going for the best trolling motor battery within your budget, would be the best approach when shopping for a battery. Below is a quick review of some of the best batteries for any budget.

Mighty Max Battery 12-V 55Ah Trolling Motor Deep Cycle Battery

This is a great choice for those who spend hours on the water at a time. The battery offers you enough power to sustain your fishing even when you are driving at high speeds. This is alike an upgrade from the 35 Ah model from the same manufacturer.

This comes handy when you are running a 30-lb trolling motor. It can last you up to 4 hours when trolling at top speed. When the speed is lowered to a minimum, the boat can stay on the water for up to 6 hours.

However, this battery is relatively bigger. However, it still remains within the range of not being bulky by measuring approximately 9.02 by 5.43 by 9.1 inches. It is also up to 14 pounds heavier than the 35 Ah model, bringing its weight to 38.6 lb.

This is a sealed lead acid rechargeable battery that does not require any maintenance. It is a spill proof battery that is designed with a high discharge rate characteristic. You can operate it on a wide range of temperatures without worrying of its functional life. Even better, it recovers easily from deep discharge.

The unit resists vibrations and shock, meaning that you can mount it in any position. On purchase of this trolling motor battery, you are offered a 30-day refund policy with a 1-year warranty.

Seeing that it is a heavy duty battery if you drain it fully, the battery takes up to thirty hours to recharge fully on a trickle charge. The extra load on this battery may be too much for a small kayak. Ergo, you will need to use it on bigger boats that require more power to operate.

VMAXTANKS Vmax857 Tm AGM 35AH Deep Cycle Hi Battery

The VMAXTANKS Vmax857 is created differently from all other trolling motor batteries. The chemical structure of its plates and the physical design makes it unique.

VMAXTANKS follows special manufacturing processes to give their batteries stealer reliability, strength and durability and high performance to exceed the conventional Pb-Ca plates currently on the market.

This unit is designed with Absorbed Glass Matt between the plates to enhance its physical and electrical potential. This places it a notch higher than the wet lead acid batteries and ups its resistance to shock and vibrations.

Like the Mighty Max Battery before it, you can fit this battery anywhere on your kayak as it operates in extreme weather and ride conditions.

Seeing that the electrolyte will be absorbed by the AGM, this unit falls into the category of non-spillable and non-hazardous batteries. The plates are sealed in a tough tank that ensures the unit is delivered maintenance free.

Even better, this tank enhances the lifespan of the unit, making it resistant to scratches. Besides being a long lasting unit, these batteries are fancied by users thanks to their and ability to recover from deep discharges.

When fully charged, the battery can last up to four hours on 40 pounds trolling motor and up to 9 hours on 18 pounds trolling motor. The unit measures 7.7 by 5 by 6.1 inches.

This gives it a compact size that makes it easy to move from place to place and easy to connect. Designed with lead tin alloys, the unit offers better performance. Even better, it will charge in half the time it takes to charge a standard battery.

Optima Batteries 8016-103 D34M Deep Cycle Marine Battery – Bluetop

Optima is a trolling batteries manufacturer that has been in the industry for a long time, making them popular. All batteries from Optima are color coded.

The 8016-103 D34M is coded BlueTop, showing that it is to be used as a dedicated starting battery. This is offered in a light grey case, unlike other variants that come in a dark grey case. Given, you can use the unit for starting as well as for deep fish finder sessions.


This is a 12-volt battery with 750 cold cranking amps. You will love its compact size at 10 by 6-7/8 by 7-13/16 inches. It weighs 43.5 pounds. This is relatively heavy, but its performance allows it a heavier weight.

It is designed with AGM technology, making it non-hazardous and non-spillable. This makes it maintenance free and safe. It is completely encased, leaving you no space to add distilled water.

Given that the unit is completely sealed in a tank, it is highly resistant to vibrations. You can mount it on any part of your kayak as it operates swiftly in low and high temperatures. The tough outer casing makes this unit durable.

The 55Ah battery will never run out of optimal starting power even when the weather condition is bad. Better still, it reserves up to 120 minutes of constant performance power. You can use this battery for more than 4 hours on top speed.

When used at 80 degrees Fahrenheit, the battery discharges 25 amps for 120 minutes and then the voltage drops to 10.5 volts. To charge up to 90 percent, you will only need 35 minutes with 100 amps.

Optima batteries are relatively expensive, but their quality is great. To ensure the battery serves you for long, use it with the recommended charger and follow the charging instructions.

Optima Batteries 8027-127 D27M Blue Top Starting and Deep Cycle Marine Battery

The Optima D27M is a dual purpose 12v battery with a cold cranking amperage (CCA) of 800Amp. It can be used for both starting your trolling motor, as well as deep cycle operations.

By using the company’s patented Spiral Cell technology, the marine batteries are capable of quick recharge times and longer life spans than conventional batteries.


Measuring 12.19″ x 6.81″ and a height of 8.75″, the Optima blue top battery weighs 53.8Ibs (approximately 24.4kgs). Though this seem heavier than previous Optima battery models, the marine lead battery reserves its capacity for longer.

It can retain its capacity at 25Amps for up to 140 minutes while most other batteries die out at less than 120 minutes.

Mainly built from polypropylene, the Optima battery is weather proof allowing optimal power to start your motor even in less than ideal weather. It has a tightly sealed polypropylene case that keeps the plates safe even during the boats impact in rough waters.

By keeping plate movement to a minimum, Optima manages to increase the battery’s life span. The robust build also ensures that boat users need not worry about acid spills and leakages.

Thanks to its sturdy, maintenance-free design, boat owners will not be required to clean its terminals. The battery can also be mounted topside or below making adaptable to a myriad of boat designs.

Left unused, most batteries discharge rather quickly and are flat in a few months. However, stored correctly (kept at room temperature), Optima’s blue top D27M is capable of retaining charge for up to a year even when not in use.

With an internal resistance of 0.0025ohms, recharge time are kept to a minimum.

Quick highlights therefore include:

  • The battery offers dual-purpose use for starting and deep cycle applications
  • Compared to other marine batteries, the Optima D27m blue top can be recharged up to 3 times more
  • Offers 15 times more vibration resistance than most of its competitors
  • Robust, spill proof build, mainly made of polypropylene
  • Can be mounted in any position

Universal UB121000-45978 12v 100AH Deep Cycle AGM Battery

There is a lot to like about the UPG UB121000 as an alternative to the Optima D27M. To begin with, the 12v 100amp hour deep cycle battery has a long shelf life.

Capable of retaining 91%, 82% and 64% in 3, 6 and 12 months respectively is quite a fete. This is if the battery is exposed to a maximum 01 25 degrees centigrade.

Based on its impressive deep cycle discharge numbers, the battery is bound to keep you on water for longer. The UPG lead-acid battery discharges at 100ah for 20 hours straight. At 60ah, it can keep you going for up to an hour.

UB121000-45978 measures 12.17″ x 6.6″ and is 8.3″ high. It also weighs 63.93Ibs (approximately 29kgs). Though physically smaller than the Optima battery, that is still slightly over 10Ibs more. However, for the extra weight, you get better ampere hours and charge performance.

Similarly, the battery has a robust build. With a valve regulated design, the battery does not spill or leak acid. As such, it can be used in any position.

Its reliability makes it suitable for both float and cycle uses. Additionally, having employed Absorbent Glass Mat (AGM) technology, no maintenance is required once the battery is attached to the 5/16″ cables.

Its efficient discharge has made it suitable for other projects, to include solar energy systems. Nonetheless, the battery should not be used as a starting battery.

Based on numerous trolling motor reviews, the battery comes highly recommended for Minn Kota, Cobra and Sevylor and other smaller trolling motors.

Powreing a 24v Minn Kota Ultera on an 18ft power drift boat posed no challenges, even in rougher waters.

Quick, stand-out features include:

  • Suitable for deep cycle uses
  • Requires a control voltage of 14.6-14.8v while charging
  • Sealed lead-acid battery that employs AGM technology
  • Less than 3% self-discharge while in storage
  • Float voltage of 13.6-13.8v

Mighty Max 12V 35AH Light Trolling Motor Battery

To complete our best trolling motor battery review, is the sealed lead-acid (SLA) Might Max ML35-12, heavy duty battery.

Like the UB121000, the 12.5v battery uses AGM technology in that the electrolyte is held in glass mats – different from flooded lead acid batteries that freely flood the plates.

The result is a superior performance from the battery than one would get from a lead-acid or lithium-ion battery.

Rated at 35AH, the battery can maintain charge above 40% while outputting 252 watt hours. This gives it a 6% constant rate of discharge, which is quite efficient.

In keeping with its competitors, the ML35 battery can operate in a wide range of operating temperatures. A sturdy build and SLA/AGM technology allow the battery to also be used in any position without risk of leakage or spillage. Moreover, it is capable of resisting shock and vibration while in use

Measuring 7.68″ x 5.16″ x 7.13″, the lightweight trolling motor battery has found its way to consumer electronics as well Its 23.15Ibs (approximately 10.5kg) and heavy-duty nature allows it to be used for emergency lights, golf carts, portable tools among many other applications.

It will surprise your that a Mighty Max’s ML35 will suffice for a 301b thrust Minn Kota trolling for 2-3 hours for a total capacity of about 400Ibs. This is all at relatively high speeds! Quite a performer.

Quick points to keep in mind on the ML35 battery include:

  • Small sized battery adaptable to multiple applications
  • Maintenance free battery
  • Spill-proof, vibration and shock resistant deep cycle battery

Optima Batteries 8006-006-FFP 34M BlueTop Marine Starting Battery

This is a mid-sized marine starting battery that is designed for use in small boats. The battery is powerful enough last you more than four hours on 40-pound motor trolling motor.

This Optima battery comes with 800 cold cranking amps and 100 minutes reserve capacity, allowing you to power other electrical equipment besides the motor.

It is designed with a strong plastic cover like other Optima batteries. This keeps it safe from bumps, scratches, and damage. It is highly resistant to vibrations, making it ideal for use on your boat.

The battery weighs only 38.4 pounds, making it a lightweight battery. It is 10 inches long and a little under 8 inches in height, ensuring it does not take up a lot of space.

However, this battery is not designed for deep cycle use. It has enough power for cranking and starting, but that is all you can do with it.

The battery uses SpiralCell technology, like other Optima batteries. This ensures that the battery stays on charge for long; up to three recharges as other batteries in its class.

Besides charging it, this battery does not require any maintenance. The thick and tough plastic case ensures that this battery withstands the weather.

The battery uses AGM technology, making it safe for use. However, you will need to be careful when charging this battery thanks to the same AGM technology.

Of the many available batteries in the market today, the three described above would probably give you the best value for your hard earned money. Saving up to buy a trolling motor battery is mandatory for any angler boat or motor propelled kayak.

These specially designed batteries would keep you moving for longer periods than can be achieved by other battery technologies. Many-a-novice have tried using car batteries for anglers. This would require you to replace your battery 3-4 times as frequently as a trolling motor battery.

Used properly, a good trolling motor battery can give you service for about 6 years before requiring replacement, making them a good investment. This includes good practice such as not allowing your battery to deplete charge completely before recharging.

All in all, while shopping for a battery, keep your boat’s weight, fishing style, type of climate and motor power needs in mind.

Minnkota Trolling Motor Power Center

This is a compact and lightweight battery holder designed with a holder and a striped strap designed to make carrying easy. The unique design of the battery holder makes it a favorite among those who are into fishing line as it fits into your kayak or boat perfectly.

If your boat is not designed with a chamber to keep your battery, this battery is small enough to fit in any position.

The battery terminals are well-exposed thanks to the design of this unit. This lets you connect the leads of the battery and the motor without having to open the box.

The battery features an inbuilt meter that shows you the charge available so you can plan your trolling. With the purchase of this battery holder, you are offered two circuit breakers; 15 amps breakers for accessories and 60 amps breaker for the trolling motor.

This unit is made of plastic. Though this is quality plastic that enhances the durability of the unit, the case is relatively less durable. When you load the battery into the case, you buckle the strap to make the battery easy to carry.

It is designed with motor center, which is ideal for small boat transom application. The unit is designed to fit 24 and 27 battery sizes.

Things To Consider Before Buying Trolling Motor Battery

When choosing the finest battery for trolling motor, the first things to consider include:

  • power, in Amps,
  • the price of the battery,
  • the reputation of the battery brand
  • customer reviews

These factors will give you a rough idea of the ideal battery. However, the size of your boat and whether you need a starting or a deep cycling battery will determine the battery you get. Here are a number of factors to consider when shopping:

Best Trolling Motor Battery

Type of Battery

Wet-Cell batteries are common deep cycle marine batteries. They are relatively affordable and durable to withstand frequent drains and recharges. Unlike other batteries, you will need to maintain these batteries by topping them up with distilled water. You will replace these batteries every year.

AGM batteries are quickly gaining traction. AGM batteries, short for Absorbed Glass Matt batteries, use a glass plate and a gel-like substance. They are maintenance free batteries as they are completely enclosed.

They are comparatively long lasting as they can serve you for up to 4 years. Given their durability and maintenance free nature, the batteries cost twice as much as wet-cell batteries.

Lithium-ion batteries are common on smartphones, but there are advanced versions that can be used to power trolling motors.

These batteries are great as they can serve you for up to 10 years when kept in temperatures below 105 degrees Fahrenheit. However, these batteries are extremely expensive to match their quality.


This shows the amount of amps that your battery will draw in one hour. This can tell you how a battery will last on charge.

When you are trolling at low speeds, a 35Ah battery can last you up to 7 hours while a 100Ah battery can last you up to 20 hours.

Of course, you will not go slow consistent and you have other equipment on your boat. This means that you need to  line up a number of 12V batteries on your boat to ensure that you do not run out of power. However, the rule of thumb is that you need to choose a higher Ah if you need higher power.


How long will your battery last? Wet cell batteries last you a year, AGM batteries between three and four years while lithium batteries last you up to 10 years. However, you need to consider user reviews to be sure of the claims of the manufacturer.

Again, check the warranty of the battery as it will also give you a rough idea of how long the manufacturer expects the battery to last. Wet cell batteries are offered with up to 8 months warranty while lithium ion batteries are offered with up to 4 years warranty.

Vibration Resistance

When you are driving through choppy waters and jarring vibrations, your battery might be at risk. However, batteries are designed with vibration resistance casing. Some batteries are more resistant to these vibrations than others. The more a battery can resist vibrations, the longer it lasts. Some batteries are also spill-proof and shock resistant.


Boats come in different sizes and so are batteries. If yours is a small boat, it may be weighed down by a large sized battery. For small boats, the battery needs to be less than 40 pounds. While some batteries will show you the group size, most will show you the exact dimensions and weight of the battery.

Ease of use and Versatility

When buying a battery, it is good to ensure that you check the kind of maintenance needed. While some may require a lot of care, some are created strong and require less care. Users reviews can tell you how easy it is to use a battery.

Some batteries can be used for various functions including starting and deep cycling. A battery that can be used for a variety of applications is a great choice for baitcasting fishing.

Specs to Look For Trolling Motor Batteries

Maintenance Tips

Even with the best battery for trolling motor, you will need to maintain it for durability. To do that:

  • Give your battery cool-off time after charging
  • Let the battery charge less for the first few days until it attains its full capacity
  • Avoid using the wrong battery charger, especially using a wet battery charger for other types of batteries
  • Use a voltmeter to check the performance of your battery at all times when charging and discharging Recharge your battery as quickly as you can after use
  • For wet cell batteries, when you need to top up water, only use deionized or distilled water
  • The top of your battery must remain dry and without dirt
  • Your cables and connectors need to be cleaned often
  • Before you charge your battery, ensure that the electrolytes level is lower than the split ring splash barrel

Though most batteries are resistant to vibrations and extreme temperatures, it is always advisable to keep your battery away from these factors unless necessary. Wet cell batteries are specifically fragile as their cells are less resistance to high vibration levels.


For trolling motor batteries, performance and reliability go hand in hand. Batteries that offer you a long functional life and with high power will cost comparatively high, but they are worth the price. If the right battery is chosen for the right purpose, the battery will get the job done. These batteries can be used to start your boat, run it and even run other on-board equipment.

Choosing the best battery for trolling motor requires to be keen, consider the needs and size of your boat, consider your budget and then go out shopping. Even after you have chosen the best battery for your boat, it is pertinent to keep it maintained.

While a battery may be good for one person, it may not meet all your needs. As such, you need to consider all factors as expounded above.

You May Also Like to Read:

Spinning Reel Under $50

Spinning Reels Under $100

Spincast Fishing Reel

Leave a Reply