Our blog is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Thank you for your support!

The driving force of any solar energy system is the deep cycle solar batteries. Without the help of suitable solar batteries, you may not be able to provide the right amount of electricity needed to power your system.

Whether you want a new solar battery for a new power system or want to replace your current batteries with an existing power system, this comprehensive review feature will surely help you find the best battery for your project.

All the batteries that have been reviewed in this article have been handpicked, and they stand as some of the best products on the market today.

While each of these products comes with potent abilities, you will still need to use a buyer’s guide to find the best model suited to your needs.

So if you are ready to find the perfect deep cycle solar battery for you, let’s get started!

Read on for our expert reviews of the best deep cycle solar batteries available. Check the latest prices to ensure you get a great deal!

Our Top Picks

Image

Name

 

Vmaxtanks VMAXSLR125 AGM Rechargeable Deep Cycle Battery

Vmaxtanks VMAXSLR125 AGM Rechargeable Deep Cycle Battery

A fantastic choice for anyone looking for a long-lasting, deep-cycle solar battery. This solar battery is extremely efficient and has incredible solar capacities. Furthermore, the unit is low-maintenance, lightweight, and simple to operate! Read more

Battle Born LiFePO4 Deep Cycle Battery

Battle Born LiFePO4 Deep Cycle Battery

It is a high-quality yet budget-friendly, deep cycle solar battery with all of the best features, such as performance, long shelf life, and ease of use. Read more

Renogy Deep Cycle AGM Battery

Renogy Deep Cycle AGM Battery

Another cost-effective alternative is also extremely versatile and accessible. It has a very sturdy structure, great efficiency, and a good quantity of power and requires little to no maintenance. Read more

Mighty Max SLA AGM Solar Battery

Mighty Max SLA AGM Solar Battery

This is an all-around deep cycle solar battery with all the bells and whistles. The fast customer service personnel is what sets it different. Furthermore, the 12V - 100Ah battery provides long-lasting power. Read more

Ampere Time LiFePO4 Deep Cycle Battery

Ampere Time LiFePO4 Deep Cycle Battery

This is an amazing option if you want a deep cycle solar battery with up to 95% efficiency. This solar battery has all of the necessary features and characteristics. It is also fully maintenance-free, making it simple to operate. Read more

WindyNation Deep Cycle Sealed Lead Acid Battery

WindyNation Deep Cycle Sealed Lead Acid Battery

Unlike the other types, this battery is the most cost-effective option. It is, nevertheless, still jam-packed with features like a fantastic lifespan, leak-proof construction, and more! Read more

Universal Power Group Solar DEEP Cycle Battery

Universal Power Group Solar DEEP Cycle Battery

Another mid-high-ranging deep cycle solar battery with a sturdy structure, high capacity, and AGM technology, among other features. Read more

7 Best Deep Cycle Solar Batteries

1. Vmaxtanks VMAXSLR125 AGM Rechargeable Deep Cycle Battery

Vmaxtanks VMAXSLR125 AGM Rechargeable Deep Cycle Battery

The Vmaxtanks VMAXSLR125 AGM Rechargeable Deep Cycle Battery stands as one of the best models on this review for a plethora of reasons like long life, durability, and more. However, its affordable price is what ultimately ties it all together.

Features

Lasts a Very Long Time

One of the best features of this military-grade deep cycle solar battery is its high-quality materials. In fact, the durability offered by these batteries is much more significant when compared to other pricey lithium-ion batteries, as these can last for almost 10 years!

Has Stunning Solar Capacities

Thanks to its 125Ah storage capacity, you can use this deep cycle solar battery to capture everything the sun has to offer, even on the hottest summer days.

Absolutely Safe to Use

One of the most common problems with using lithium-ion batteries is that it tends to release a lot of toxic humans that can cause several issues when inhaled.

However, this is not the case with the Vmaxtanks VMAXSLR125 AGM Rechargeable Deep Cycle Battery, as this does not give off any detrimental fumes! This makes it perfect for a home solar power unit.

Pros:

  • It is a heavy-duty military-grade solar battery
  • It has a pocket-friendly price
  • The high-quality materials ensure longevity and durability for over ten years
  • The intelligent battery calculator also helps with energy efficiency and conservation

Cons:

  • It weighs too much, which makes it difficult to carry around

2. Battle Born LiFePO4 Deep Cycle Battery

Battle Born LiFePO4 Deep Cycle Battery

Yet another popular choice for a solar battery today is the Battle Born LiFePO4 Deep Cycle Battery, and it is pretty easy to see why this is a favorite.

This battery incorporates top-notch features like a built-in BMS, first-class lithium-ion technology, and green energy batteries making it an ideal choice for those who prioritize the energy-efficiency factor.

Features

Comes With a Built-In BMS

Also known as “Battery Management System,” the BMS is what acts as the heart and soul of these deep cycle solar batteries.

With the help of this technology, you will be able to keep your battery safe against harmful issues like ground faults, temperature volatility, or battery failure.

Moreover, this system also helps control the amount of power used by the solar battery by working as an efficient shut-off system.

Packed With the Best Lithium-Ion Technology

While most solar lead-acid batteries come with a limited mounting capability, the lithium-ion technology here has an inexhaustible mounting ability! Moreover, these Li-Ion batteries also offer unmatched safety and security against battery damages.

In addition to this, they also come with incredible longevity and durability and are also cost-efficient!

Green Energy Batteries

Yet another noteworthy feature about the Battle Born LiFePO4 Deep Cycle Battery is the green energy solar battery that it comes with. This is assembled and manufactured in the USA with non-toxic materials. This, in turn, helps to reduce the size of your carbon footprint.

By purchasing this eco-friendly deep cycle solar battery, you will be able to save the home planet while also choosing the perfect battery for all your off-grid power systems!

Pros:

  • It can charge and recharge quickly on its own
  • It does not require any little to almost no maintenance
  • It comes with a long lifespan
  • It can work well in low to high temperatures from -40 to 1580°F
  • It comes with a 10-year warranty

Cons:

  • It has an enormous upfront cost of purchase

3. Renogy Deep Cycle AGM Battery

Renogy Deep Cycle AGM Battery

If you are looking for a deep cycle solar battery that can fulfill the needs of your RV with proper care, then the Renogy Deep Cycle AGM Battery is just the correct battery for you.

Not only does it come with powerful performance features, but you can also get it for a budget-friendly price!

Take a look at some of the features of the Renogy Deep Cycle AGM Battery that make it unique from the rest of the products:

Features

Requires Very Little to No Maintenance

One of the best features of the Renogy Deep Cycle AGM Battery is that it is made of high-quality AGM material. This thick absorbent glass mat separator combined with the best valve-regulated technology allows you to stay well-protected against acid leakage.

This, in turn, reduces the need to maintain the deep cycle solar battery as often!

Excellent Discharge Performance

This solar battery is made with quinary alloy plates and comes with uniquely treated plate grids that allow you to maintain low internal resistances. However, it can also perform well with high discharge currents going up to 10 times the actual battery capacity.

Comes With a Long Shelf Life

Other than the AGM materials, this solar battery also comprises high purity materials that can quickly reduce and bring down the self-discharge rate to 3% at 77°F every month!

Thus about five times lower than their flooded counterparts!

Wide Operation Temperature Range

In addition to all these features, the Renogy Deep Cycle AGM Battery also comes with an excellent working temperature range and can work well even below 32°F.

Pros:

  • The solar batteries are robust, hardy, and are super compatible with Renogy brand solar panels.
  • It has a quick charging time
  • It comes with a wide operating range
  • The battery is low-maintenance, leak-proof, and long-lasting
  • The company offers excellent customer support service

Cons:

  • The warranty process is quite complicated

4. Mighty Max SLA AGM Solar Battery

Mighty Max SLA AGM Solar Battery

When it comes to reviewing the best deep cycle solar batteries, we could not miss out on the Mighty Max SLA AGM Solar Battery, as it has earned quite the reputation for itself over the years.

This is because Mighty Max manufactures some of the most high-performing, heavy-duty batteries for solar power units. The same applies to this model as well.

Features

Superior Performance

The brilliant 12V – 100Ah battery comes with a high-discharge rate with spill-proof features to ensure no damage. Moreover, the batteries work exceptionally well under both low and high temperatures while also being resistant to vibrations and shocks.

Does Not Require a Lot of Maintenance

If you want a solar battery that does not give you a lot of trouble, you will surely benefit by purchasing the Mighty Max SLA AGM Solar Battery.

Other than offering superior performance, you will also get high-quality SLA deep-cycle AGM batteries that can last a long time. The best part is that it requires minimal requirements to none!

Excellent Customer Service

Other than the attributes mentioned above, Mighty Max also offers prompt customer service that is ready to help you out in case you have issues with the solar battery.

Pros:

  • It can be mounted in different orientations
  • It works well in all temperatures
  • It is spill-proof and does not call for too much maintenance
  • They have good customer support service
  • It comes with a 1-year warranty and a 30-day refund policy

Cons:

  • Some users have found issues with the voltage of this battery

5. Ampere Time LiFePO4 Deep Cycle Battery

Ampere Time LiFePO4 Deep Cycle Battery

If you are looking for a deep cycle solar battery that weighs as light as a feather while also packing extreme power and functionality, you cannot miss out on the Ampere Time LiFePO4 Deep Cycle Battery.

This solar battery is known to come with stable performance, power, and high energy density.

Take a look at what elements make this battery stand out from the rest.

Features

Fully Automotive Grade Lithium Battery

One of the best qualities about the Ampere Time LiFePO4 Deep Cycle Battery is their exceptional quality and performance, thanks to the Automotive Grade LiFePO4 Cells. With this, you can get the best of performance and power.

Moreover, you also get the highest levels of safety for all the battery cells based on the official UL Testing Certificate. This allows you to mount the solar battery at any angle and position it easily.

Offers Up to 95% Efficiency

This solar battery comes with a flat discharge curve that can give you almost 12.8V, which is nearly 95% of its actual capacity! This way, you will be getting an astronomical run time when compared to the other battery models on this list.

Easy to Install and Very Light in Weight

Did you know that even though this battery packs in outstanding features, it still weighs only about 24.25 lbs which is 1/3 of the weight of other lead-acid batteries?

In simple terms, this battery is almost 50% lighter when compared to the other lead-acid batteries that come with similar features.

Moreover, it is also super easy to install.

All these elements combined are what make the Ampere Time battery an excellent choice for both indoor and outdoor purposes.

Pros:

  • It comes with high-quality casing and protection features
  • The lifespan extends to up to 8000 cycles and runs with a 95% efficiency
  • It has steady performance and power
  • It comes with a high capacity of 300Ah
  • It has a very pocket-friendly price

Cons:

  • The customer service is not very great

6. WindyNation Deep Cycle Sealed Lead Acid Battery

WindyNation Deep Cycle Sealed Lead Acid Battery

Deep cycle solar batteries are usually quite hefty investments. So if you are shopping for a good quality solar battery on a budget, this one is the perfect choice for you.

Not only does this battery come at an affordable price, but it also comes with excellent features for off-grid solar power systems!

Features

Made of Heavy-Duty Materials

Unlike most deep cycle batteries, this one comes with top-notch features, a maintenance-free design, and is sealed completely to make it completely leak-proof. In addition to this, it also comes with heavy-duty plates that allow you to charge and recharge whenever needed.

Incredibly Long Lifespan

This deep cycle solar battery can work splendidly for almost 12 years thanks to its high-quality design, build, and leak-proof abilities!

The best part is that you also get an impressive 1-year warranty. This will help cover all faults and take care of all repairs utterly free of cost.

Manufactured With Pure Virgin Lead

Unlike most of the other deep cycle solar batteries, this one is manufactured and designed with pure virgin lead. This helps achieve lower rates of self-discharge while using the battery.

This, in turn, helps give superior performance and longevity to the product.

Pros:

  • The battery is built with high-quality, heavy-duty materials
  • It is leak-proof, which does not call for a lot of maintenance
  • It is manufactured with pure virgin lead
  • The customer service team is also commendable
  • It has a pocket-friendly price point

Cons:

  • It weighs quite a lot

7. Universal Power Group Solar DEEP Cycle Battery

Universal Power Group Solar DEEP Cycle Battery

Suppose you want a battery that can offer you superior capacity over anything else. In that case, you will surely be interested in what the Universal Power Group Solar DEEP Cycle Battery offers.

While its capacity remains one of its best features, there’s a lot more to this product that is worth mentioning.

Features

Offers Exceptional Capacity

Regardless of the battery type, its capacity remains one of the most critical requirements. The Universal Power Group Solar DEEP Cycle Battery has not disappointed us in this aspect!

In fact, this battery holds a great 100 Amp! This means you can easily power your devices for almost 20 hours non-stop with a current of 5A, which is quite fascinating.

Best AGM Technology

Thanks to its AGM technology, these batteries come with lead plates which are then wholly hedged with glass fiber mats.

This allows the battery to function well without holding any fluids, which in turn helps to increase its longevity.

Safe and Low-Maintenance

Because these batteries work without the use of any fluids, they are reasonably easy to use and can be mounted from any position.

Moreover, the absence of fluids also eliminates the need for frequent maintenance, making it easy to manage.

Pros:

  • It comes with an impressive capacity
  • Loaded with the best AGM technology
  • It is safe to use and is maintenance-free

Cons:

  • The battery life is not the best

Deep Cycle Solar Battery Buying Guide

Now that you have thoroughly read through the reviews, you would have gotten a ground understanding of all your best options. While all these do seem like good options, batteries are not a “one size fits all” purchase.

So how do you decide which is the best deep cycle solar battery for you?

By reading this buying guide, of course! By reading through this short section, you will learn everything there is to know about these batteries. By the end of this article, you will be able to make a well-informed decision.

What Is a Deep Cycle Solar Battery?

Deep Cycle Solar BatteryAt first glance, a deep cycle solar battery looks just like a standard car battery. However, these batteries are specially manufactured to charge and recharge solar-generated electricity repeatedly.

Other than this, these batteries will also be able to discharge that excess electricity if needed. This way, you can make better use of energy and electricity without wasting resources.

How Does a Deep Cycle Solar Battery Work?

A deep cycle solar battery is a type of battery that is designed to be used regularly and repeatedly. Solar energy is collected by the solar panels and converted into electrical energy. This energy is then stored in the battery until it is needed. When you need to use the power, the battery will release the energy to the load.

What Are the Benefits of Using Deep Cycle Solar Batteries?

Deep cycle solar batteries come with regular charging and discharging cycles to help power electrical devices for a long time without any interruptions. While this is the significant benefit of these batteries, they can also have other perks:

  • They are much smaller and weigh lighter, making them easier to use than lead-acid batteries.
  • Regular maintenance is not needed.
  • It offers meager internal resistance, and this enables fast charging and reduced wastage of energy.

How to Find the Best Deep Cycle Solar Battery for You

Before you finalize your purchase, make sure to use this buyer’s guide as a checklist to see if it has all the basic requirements:

Type of Deep Cycle Solar Battery

Even though deep-cycle solar batteries are relatively new, they have evolved into 4 different types, and they all come with various features. Therefore, make sure to be familiar with all the types before you make your purchase:

  • Flooded lead-acid batteries
  • Absorbent glass mat batteries (AGM batteries)
  • Gel batteries
  • Lithium-ion batteries

Energy Requirement

In order to find the best deep-cycle solar battery for you, you will first need to know what is the energy requirement you need.

Whether you need to provide electricity for office space, home, or even a vacation, you will need to estimate how much energy you need.

Voltage

The next factor you need to check for is the voltage. Based on your energy requirement, the voltage value may be as significant as 48V or as small as 12V.

It is crucial to plan what voltage you need before purchasing and installing a battery to ensure you make a worthy investment.

Capacity

Solar BatteryNext, you have the capacity. Regardless of what type of solar battery you choose, they all have a specific capacity that is measured in Ah or Amp Hours.

With this value, you will be able to determine how much energy and electricity you can store inside the battery and how long it can run. For instance, if your battery comes with 100Ah, you will be able to use it for approximately 100 hours with a usable voltage value of 1Ap.

If you need to power several electrical devices, you will need to get batteries with greater capacities. Otherwise, the battery will drain out quickly, and you may need to invest in another one later.

Weight and Size

If you want to use your solar battery for a vehicle, small, lightweight batteries like lithium-ion batteries will be the best choice. However, if you plan on using the battery for a larger unit, you need to opt for heavy-duty batteries.

Typically, these look and feel heavier than small batteries as they pack in more power and performance.

Charging Time

Just like every other solar device, the deep-cycle solar battery also comes with a charging time. While some units can charge instantly, some may take a while to reach their limit.

Of course, this may not be an essential factor for those who live in sunny areas, but if you live in a place where there is more rain than shine, you will benefit more by opting for a battery that charges as fast as possible!

Overall Lifespan

Of course, solar batteries can last a long time as all you ought to do is charge and recharge the battery over and over again. However, even with this level of flexibility, all solar batteries come with a lifespan, regardless of the type.

Usually, its lifespan extends from 5 years to 15 years. This is still better than the lead-acid batteries with only 3 years to 5 years.

Typically, lithium-ion batteries are the most long-living batteries as they can function well for almost 10 years to 15 years. However, gel batteries and AGM batteries also work well in terms of longevity.

Warranty

Deep Cycle Solar BatteriesNo matter what solar device you plan to purchase, make sure it comes with a warranty. This is because repairs of any kind with solar batteries can cost a pretty penny. The more expensive your battery costs, the higher the service cost will be, as well.

If you would like to save a bit of money, make sure to have a warranty. This way, you can get help for all issues and defects for pocket-friendly prices! If you cannot find a warranty on a particular model, it is best to steer clear of that product.

Besides, having a little assurance to back you up on your purchase is always better, right?

Cost

If you have decided to purchase a deep cycle solar battery, be ready to pay a hefty amount upfront. However, it comes with several benefits which can help you save more money in the long run.

So do not be afraid of the initial costs. Instead, set a budget that is comfortable for you.

If you are shopping on a tight budget, there are plenty of decent models to choose from. You can always purchase a cheaper model first, test its benefits and then replace it later with a better model if you are okay with it.

Some good examples of cheap yet potent battery models are lead-acid batteries and lithium-ion batteries.

When it comes to deep cycle solar batteries, the more you pay for them, the better-quality battery you will be getting. So, if you can afford to invest in a good-quality solar battery, we would recommend you to purchase those instead as they will surely pay off in the long run.

Wrapping Up

Unlike standard batteries, solar-powered deep cycle batteries offer the best of power, performance, and power delivery. Since these batteries are made of high-quality, heavy-duty materials, they can also last longer than average batteries.

This is one of the main reasons why deep cycle batteries are more preferred for solar power systems, RVs, boats, and more.

So if you are interested in purchasing a deep cycle solar battery for yourself, feel free to pick one from this list! By reading this review, you will get a complete idea of what unique features the battery has, as well as its pros and cons.

Sure, these batteries may be a bit pricey, but with this amount of flexibility and usability, it is always worth making this investment.