The Best Marine Battery Reviews — Starting and Deep Cycle Batteries

Last Updated on June 21, 2021 by Donnell Henderson

Every angler needs a reliable marine battery for their boat. Aside from a reliable battery to start it up, if you’ve got other electrical equipment on your boat, you’ll need a battery to power them all. After all, those devices on your boat working well could determine the success of your fishing trip. So you have to choose the right marine battery.

But how do you choose the right battery for your watercraft? That depends on your power requirements. So I have prepared this roundup of the best marine batteries for the money plus a guide to help you figure out what you need.

So let’s dive right in…

 

My Top Pick

My favorite is the Optima 8016-103 D34M, as it has more than enough power to crank your engine. It is a dual-purpose unit that can serve as a cranking and deep cycle battery.

 

The Best Marine Batteries Are

  1. Optima Batteries 8016-103 D34M — Best Boat Battery
  2. Odyssey 31M-PC2150ST-M Trolling Thunder Marine Battery
  3. Banshee LiFeP04 Deep Cycle Battery 100Ah — Best Deep Cycle Marine Battery
  4. Universal Power Group UB121000 Deep Cycle VRLA Battery
  5. Optima Battery 8006-006 34M Bluetop Battery — Best Marine Starting Battery
  6. Renology Deep Cycle AGM Battery
  7. Interstate Battery Sealed Lead Acid Replacement Battery (DCM0035)
  8. XS Power D6500 XS Series
  9. Mighty Max Battery 12V 75Ah

 

1. Optima Batteries 8016-103 D34M — Best Boat Battery

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

Despite being ranked among the lightest batteries available, Optima 8016-103 D34M has enough power to start the engine. Optima 8016-103 D34M is an all-purpose unit that can offer optimal starting power even in harsh weather conditions. Its 55Ah c20 capacity will be more than enough for your fishing trip. 

Another reason why you should get this unit is that it can hold up for an entire day in the water. Therefore, it can be an excellent option for individuals using it on a fishing vessel. Optima 8016-103 D34M is ideal for smaller boats but can also function well and last for about 11 hours on bigger vessels. 

However, this will depend on all the devices on your boat, and the amount of charge needed to support them. Optima 8016-103 D34M can withstand strong movements and shakes without losing power. And being lightweight, this unit is not too heavy on your mounting system and can easily remain in place when sailing under harsh conditions. 

With a reserve capacity of about 120 minutes, this device can run your trolling motor for a short trip when your engine fails. Optima 8016-103 D34M is an absorbent glass mat (AGM) type of battery that requires zero maintenance. However, you have to be very careful not to overcharge this unit as it can be damaged by overcharging.

 

Specs

  • Brand: Optima
  • Voltage: 12volts
  • Reserve Capacity: 120 minutes
  • Weight: 43.5 pounds
  • Cranking Amperes: 870 Amps

 

Pros

  • It is highly resistant to vibrations
  • Can be used in a boat or an RV
  • Requires no maintenance
  • Comes with a 2-year warranty
  • Has a 120-minutes reserve capacity
  • Dual-purpose battery

 

Cons

  • Can be damaged by overcharging

 

Overall rating: 4.4 out of 5

Conclusion: Optima 8016-103 D34M is a dual-purpose unit that can do more than just power your vessel. This unit can also power all the other devices on your boat.

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2. Odyssey 31M-PC2150ST-M Trolling Thunder Marine Battery — Runner Up

Odyssey 31M-PC2150ST-M TROLLING Thunder Marine Dual Purpose Battery

Odyssey 31M-PC2150ST-M is a dual-purpose unit that serves as a deep cycle and cranking battery efficiently. Thanks to its CCA of about 1,250 amperes, this unit can start all recreational outboard or inboard motors even in poor weather. This unit also features unique deep cycling capabilities that last for about 400 cycles at 80% discharge depth. Therefore, it can produce a high, stable voltage for an extended period. 

Rated at 100Ah, this unit should provide 5 amps per hour for 20 hours, which is more than enough to troll a local lake. Plus, it takes between 4 to 6 hours to fully recharge this unit. The AGM design means that you will never have to worry about maintenance. Odyssey 31M-PC2150ST-M is also resistant to vibration and shock and has a lower self-discharging rate. However, a lot of deep cycle marine battery reviews do point out that it is quite costly.

 

Specs

  • Brand: Odyssey
  • Weight: 77.8 pounds
  • Voltage: 12 volts
  • Cold-cranking amperes: 1,150 amps

 

Pros

  • It is a dual-purpose unit
  • It has a high CCA
  • Durable
  • Vibration resistant
  • Requires no maintenance
  • It comes with a limited three and four-year full replacement warranty

 

Cons

  • It can be quite costly

 

Overall rating: 4.6 out of 5

Conclusion: This powerful dual-purpose unit can easily power your vessel in harsh weather.

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3. Banshee LiFeP04 Deep Cycle Battery 100Ah — Best Deep Cycle Marine Battery

Banshee LiFeP04 Deep Cycle Battery 100Ah 12V With Built-In BMS - Perfect for RV Camper, Marine, Trolling

Banshee has produced some great batteries, and Banshee LiFeP04 100Ah is no exception. Banshee LiFeP04 is a highly versatile and durable device that can power a wide range of boats and Recreational vehicles. Other than being one of the lightest batteries in the market, Banshee LiFeP04 provides the highest CCA.

With a CCA of about 1200 amperes, Banshee LiFeP04 can power your vessel under harsh weather conditions. Banshee LiFeP04 has many advanced capabilities, including Emergency Start Functions, BMS system. It also features a Built-in Voltage Meter and True-Marine Dual-Post Terminals. 

 If your battery has a low charge and can’t start your boat, you can push the Emergency start button and restart your vessel. The emergency start function activates when your battery is fully depleted. And once you push the emergency start button, you have 60 seconds to start your boat. The Battery Management System can protect your unit from short-circuiting, discharged, or overcharged. However, it is quite costly.

 

Specs

  • Brand: Banshee
  • Weight: 24.2 pounds
  • Cold Cranking Amperes: 1200 amperes
  • Voltage: 12 volts

 

Pros

  • Lightweight
  • Durable
  • Environmental friendly
  • Low discharge rate
  • It has an emergency start function

 

Cons

  • It is quite costly

 

Overall rating: 4.6 out of 5

Conclusion: Banshee LiFeP04 is a lightweight and powerful unit that can power all the electronic devices on your vessel. 

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4. Universal Power Group UB121000 Deep Cycle VRLA Battery

Universal Power Group 12V 100Ah Solar Wind AGM SLA DEEP Cycle VRLA Battery 12V 24V 48V

The Universal Power Group designed the UB121000 battery with durability in mind. Weighing about 63.93 pounds, the UB121000 is a compact unit that can withstand vibration and shock. Therefore, it is the best unit to use in harsh weather conditions. And since shock and vibration are the main causes of premature battery failure, this unit can serve you for a very long time. This highly mountable unit can be mounted in any position on your vessel. Plus, the installation process is straightforward. The UB121000 is an SLA/AGM type of battery that is leak-proof.

While a normal battery demands a lot of maintenance to remain active, the UB121000 is maintenance-free. Therefore, you will never have to worry about spending time refilling the lead acids. Like other AGM batteries, this unit has a small amount of sulfuric acid compared to all the other flooded units. And the fact that it’s spill-proof means that you can move it without worrying about spillage. And to guarantee you that they believe in the quality of their product, this device comes with a 1-year warranty. However, many users have complained that UB121000 is quite heavy.

 

Specs

  • Brand: Universal Battery Power
  • Voltage: 12 volts
  • Weight: 63.93 pounds

 

Pros

  • UB121000comes with an acid-proof body
  • It is a heavy-duty battery
  • Durable
  • It can resist shock and vibrations

 

Cons

  • It can be a tad heavy

 

Overall rating: 4.5 out of 5

Conclusion: thanks to its compact design, the UB121000 is both shock and vibration resistant.

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5. Optima Battery 8006-006 34M Bluetop Battery — Best Marine Starting Battery

Optima Batteries 8006-006 34M BlueTop Marine Starting Battery

The Optima 8006-006 is one of the most powerful starting batteries in the market, with a cold cranking amp (CCA) of about 800 amps. It has a marine cranking power of about 1000 amps; therefore, it can easily power RVs and boats. Optima 8006-006 is one of the best marine cranking battery. This unit can start powerful engines but won’t keep them running for as long as Optima 8016-103 D34M. Weighing about 38.4 pounds, Optima 8016-103 D34M is 10% lighter than Optima 8016-103 D34M. Therefore, it’s less likely to slip out even when sailing in harsh conditions.

This 12-volt battery can handle vibrations up to fifteen times as well as most batteries in the market. It comes with some durable steel posts for attaching metal grips to access charge. Its unique grey plastic and blue top is thick enough to thrive under unfriendly weather conditions. The fact that it’s also the best AGM marine battery guarantees that it requires little maintenance.

This unit can power the devices on your vessel thanks to its high CCA of about 800 amps and 100 minutes of reserve capacity. Optima 8006-006 boosts quality construction and a spill-proof design. But it can take up to 12 hours to fully recharge depending on how fast it was drained. Plus, it has less capacity than most marine batteries.

 

Specs

  • Brand: Optima
  • Weight: 38.4 pounds
  • Voltage: 12 volts
  • Cold-cranking amperes: 800 amps
  • Reserve Capacity: 100 minutes

 

 Pros

  • It handles harsh weather conditions well
  • It features a leak-proof design
  • It comes with a 2-year warranty
  • It has 100 minutes of powered reserve capacity
  • Lightweight

 

Cons

  • It has less capacity than most marine batteries

 

Overall rating: 4.2 out of 5

Conclusion: This powerful and reliable unit can withstand different weather conditions. And the good thing about it is that it requires no maintenance.

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6. Renology Deep Cycle AGM Battery

Renogy Deep Cycle AGM Battery 12 Volt 100Ah for RV, Solar Marine and Off-grid Applications

Despite its simple design, Renology Deep Cycle is a very powerful battery that can serve you perfectly on the water. Rated at 100 Ah, this AGM type battery can provide high power levels for your vessel. Thanks to its AGM separator and advanced valve-regulated technology, this unit is maintenance-free. With Renology Deep Cycle, you will never have to worry about acid leakage. And thanks to the high purity material used to make this unit, Renology Deep Cycle has a very low self-discharge rate. 

Weighing about 70 pounds, this unit can be a bit heavy. So you might have some problem getting this battery to your vessel. But once you install it, you will discover that it is quite versatile. This battery can power all the devices in your boat.

 

Specs

  • Brand: Renology
  • Voltage: 12 volts
  • Weight: 66 pounds

Pros

  • It can be charged using solar panels
  • Durable
  • It is highly versatile
  • It requires no maintenance

 

Cons

  • It can be quite heavy

 

Overall rating: 4.4 out of 5

Conclusion: Renology Deep Cycle is a versatile battery that can power numerous devices in your vessel.

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7. Interstate Battery Sealed Lead Acid Replacement Battery (DCM0035)

Interstate Batteries 12V 35AH Sealed Lead Acid (SLA) AGM Deep Cycle Battery (DCM0035) Insert Terminals

The DCM0035 is a universal 12 volts marine battery with a capacity of 35 ampere-hours that can handle a wide range of applications. The DCM0035 can power garden and lawn tools, medical mobility, portable tools, and boats. DCM0035 is a lightweight and compact unit that can fit perfectly on your boat. 

This interstate battery is a sealed lead-acid (SLA) type of battery that requires no maintenance. The SLA type has a compact design that leaves no room for leakage; therefore, you can install it in any position. And just like all the deep cycle batteries, the DCM0035 has a decent long-running service life. So, it requires more than enough time to fully recharge once it’s drained.

It takes over 12 hours to fully recharge. Another major advantage of this unit is that it can resist shocks and vibration. Therefore, it the best option for fishing in harsh weather conditions. However, it takes too long to recharge.

 

Specs

  • Brand: Interstate batteries
  • Weight: 22.9 pounds
  • Voltage: 12 volts

 

Pros

  • It is vibration and shock-resistant
  • Maintenance-free
  • Lightweight
  • Modest size

 

Cons

  • It takes a long time to fully recharge

 

Overall rating: 4.3 out of 5

Conclusion: DCM0035 is a powerful and lightweight unit that can fit perfectly on your vessel. This durable and small-sized battery can power all the devices on your boat.

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8. XS Power D6500 XS Series

XS Power D6500 XS Series 12V 3,900 Amp AGM High Output Battery with M6 Terminal Bolt

XS Power has produced a wide range of powerful batteries for racing, and XS Power D6500XS is no exception. Thanks to its cranking amperes of about 1070 amp, this battery can power your vessel in harsh weather conditions. XS Power D6500 is a highly durable device that can survive shock and vibrations when fishing. XS Power D6500 is an entirely sealed unit and spill-proof; therefore, you will never have to worry about maintenance. 

Weighing about 58.3 pounds, this battery can be mounted in almost any position. This highly durable unit can serve you for a very long time. This highly versatile battery can power a wide range of boats and vehicles. This unit has been tested in everything from boat racing to drag racing to dirt racing. And thanks to its AGM design, the XS power is the battery of choice for boat racing. However, some people have complained that this device is a tad heavy.

 

Specs 

  • Brand: XS Power
  • Weight: 58.3 pounds
  • Voltage: 12 volts
  • Cranking Amperes: 1070 amperes

 

Pros 

  • It can be installed in the boat in any position
  • Durable low-maintenance
  • Vibration and shock-resistant
  • It is valve regulated

 

Cons

  • It can be a tad heavy.

 

Overall rating: 4.7 out of 5

Conclusion: XS Power D6500 is a vibration and shock resistant unit. XS Power D6500 can power a wide range of cars and boats. 

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9. Mighty Max Battery 12V 75Ah

Mighty Max Battery 12V 75Ah SLA Battery for Wayne ESP25 Back-Up Pump Brand Product

Mighty Max battery12V is a maintenance-free device that can power your vessel in harsh weather conditions. And unlike other wet cell batteries, this unit doesn’t require any fluid addition since it was purchased. This rechargeable spill-proof unit has a high discharge rate and can function in a wide range of temperatures. Thanks to its deep discharge rate, this product has a long service life.

Thanks to its dimension and weight, the Mighty Max battery can be mounted in any position. And the fact that you don’t need any mounting accessories to install it is a bonus. This durable unit is vibration and shock resistant; therefore, it can serve you in harsh weather conditions. The Mighty Max battery comes with a full year warranty, and it’s backed by a 30-days refund policy. However, many users have complained that this device is quite heavy.

 

Specs 

  • Brand: Mighty Max Battery
  • Voltage: 12 volts
  • Weight: 50.71 pounds

 

Pros 

  • Mighty Max battery comes with a year-long warranty and a 30-day refund policy
  • It doesn’t need maintenance
  • Spillage resistant
  • It can be mounted in a wide range of positions
  • It can provide incredible performance in a wide range of temperatures
  • Its spillage free
  • Durable
  • No adding fluid
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Cons 

  • It can be a tad heavy for some anglers

Overall rating: 4.6 out of 5

Conclusion: Mighty Max battery can offer incredible performance in low and high temperatures.

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How to Pick the Best Boat Battery

Other than your fishing gear, the most crucial device on your boat is your marine battery. A marine battery can help you crank your engine and even power your trolling motor for a few minutes when your engine fails.

Therefore, make sure your boat is set up with the best deep cycle marine battery before heading out.

There are several factors you have to consider when choosing a reliable marine battery. Remember, a reliable device has to be durable and versatile. It has to be vibration and shock-resistant. So here are a few factors to consider if you want to pick the best deep cycle marine battery.

Usage

What are the main purposes of the marine battery you plan on purchasing? Are you looking for a power source for cranking your boat’s engine or a device to power all the onboard electronics? If you are looking for a battery to start your engine, you should look for the best cranking engine. 

And if you need something to power all the onboard devices and electronics, you’ll need to get a deep cycle battery. If you want a unit that can do both but can’t compromise on weight and space, then you should consider getting a dual-purpose battery.

Starting or Cranking Battery

Starting a boat’s engine needs a sudden burst of power, especially when it’s really cold. Therefore, you need a cranking battery with high marine cranking amps or cold-cranking amps that can work even in cold weather conditions.

Deep Cycle Marine Battery

The main goal for this type of battery is a slow and steady supply of power to your devices and electronics. These batteries allow for a great depth of discharging without getting damaged. So they should always be fully charged before setting sail. A deep cycle battery can start an engine, but it just doesn’t deliver enough CCA.

Dual-Purpose Battery

These hybrid units can serve as both steady and starter power sources. A dual-purpose battery can come in handy where space is an issue. A dual-purpose battery cannot outperform a deep cycle or starter battery in their specific application.

best marine battery

 

Type of Battery

There are three types of batteries that can serve as marine power sources (Sealed Lead Acid, Gel, and flooded batteries). The Sealed Lead Acid (SLA) batteries are spill-proof and valve regulated. The SLA batteries use Absorbent Glass Mat (AGM) to prevent spillage. The flooded batteries are not ideal for marine usage as they can spill.

The gel battery has a lot of similarities with the flooded batteries. But since they are not filled with liquid, gel batteries have fewer restrictions. A get battery can offer exceptionally composed resistance to shock and vibrations. Flooded batteries are more susceptible to shock and vibration than the AGM options.

Cold-Cranking Amperes/Marine Cranking Amperes

The cranking or starting power is usually rated in Cold Cranking Amperes (CCA). CCA is the total amperes a marine battery can deliver for 30 seconds while maintaining 7.2 volts at 0°F. Anything below 300 CCA cannot crank an engine.

The Marine Cranking Amperes (MCA) takes into account the temperature. The MCA refers to the amperes produced at 32°F. MCA is usually higher than CCA. So you should look at the amount of CCA your engine needs and then purchase a battery that matches your engine’s requirements.

Capacity

The capacity of batteries is usually measured in Ampere hours (Ah). A unit with a capacity of about 100Ah can deliver 100 amperes for an hour or 20 amps for 5 hours. Batteries with a higher capacity can run your devices for an extended period.

Remember, you should never fully discharge your battery if you want it to serve you for a very long time.

Battery Boxes

Battery boxes are usually exposed to extremely harsh weather conditions. However, batteries don’t do well with rain, saltwater, or temperature fluctuations. So you should make sure your vessel has a battery box to protect your power source from these elements. If it doesn’t have a battery compartment, you can purchase one and install it. And before you purchase just any box on the market, you should make sure it has:

  • USB charging ports
  • Display info for your battery
  • And it is more water-resistant

A simple box can keep out splashing water and rain. And make sure your battery is fastened down or strapped.

Reserve Capacity

Reserve capacity refers to the amount of time you can discharge your battery at a fixed rate or 10 volts at 80°F by 25 amperes. Batteries with higher reserve capacities can last longer even when overworked. However, you should know that the Reserve capacity is a theoretical value, and under normal conditions, you will draw even fewer amperes.

Weight and Dimensions

The weight and dimensions of a battery can’t be a significant issue on a boat with unlimited space to install your battery. Huge batteries have higher capacities, and you can connect several batteries to get more power. The weight of a battery matters a lot if you will be moving it a lot.

Remember, during the off-season, you will have to move the battery to storage. So make sure you consider the size and weight of a battery before purchasing it.

Special Functions

Numerous batteries can be installed in a wide range of positions. Others can be inverted upside-down, with others are waterproof. These features can be quite useful when looking for a marine battery. Some batteries have thicker plates that can easily tolerate deep cycles. So make sure you look for a battery with a specific function that can make life easier.

Final Thoughts

There are three types of marine batteries (Cranking, deep cycle, and dual-purpose batteries). So before you pick just any battery, you should consider the main reason you need a new marine battery. Remember, cranking battery is for starting your vessel while a deep cycle one is for powering all the onboard devices. If you don’t have enough space for two batteries, you can go for a dual-purpose unit. However, a dual-purpose unit cannot be as powerful as a deep cycle or cranking unit in their respective functions.

Purchasing a marine battery is more than walking into a local store and picking one. There are numerous factors that you must consider when buying the best boat battery. So we have prepared the above reviews just for you.

And if we were to pick the best option from our list, we would go with Optima 8016-103 D34M. Besides being one of the lightest marine batteries in the market, this unit is spill-proof and maintenance-free. The 8016-103 D34M can thrive in harsh weather conditions. 

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