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14 Best RV Deep Cycle Battery Buying Guide

14 Best RV Deep Cycle Battery Buying Guide

Now you’ll be wondering which the Best RV Deep Cycle Battery is, and would you choose given all the choices for consumers? Not to worry, we’ll walk you through the whole process to find the right one for you. In this article, we list our picks for the 14 best RV deep cycle battery with our buying guide.

The simple truth is that it happens, unfortunately, although perhaps it can be avoided. All you need is a good RV Long Cycle Battery to get reliable power for a smooth experience

What is an RV Deep Cycle Battery, and what is a good Deep Cycle RV battery?

Well, everything relies on it from microwaves, refrigerators, small water pumps to any large applicants. However, RV’s are designed to run with a steady amount of power over a long period. It is an essential.

A Long cycle battery is different from a starting battery. Thus, it has solid, thicker plates, not a sponge. Solid cycle batteries are used to power some small vehicles like golf carts, and electric wheelchairs.

See the difference?

However, these thicker plates provide instant power as well as less surface area. Meanwhile, these plates are sturdier. For a good Deep Cycle battery, we habe reviewed fourteen of the best on the market.

14 Best RV Deep Cycle Battery for RV on the Market – Our Selections

As a long cycle battery is a necessary object for your RV, you should be choosy to pick the extended cycle battery. On the other hand, you need significant investment to buy it. Thus, Different brand tends to offer a wide range of product in different capacity and functionality.

Due to the various range of production, you are a bit confused about what is best for you. Well, don’t worry! We do that research work for you. Furthermore, we recommended the top 14 solid cycle battery for your RV. 

1. VMAX SLR-125 Deep Cycle SLA Rechargeable Battery

When you need a rechargeable battery for solar panels or inverters what can be better than the VMAX SLR-125 Deep Cycle SLA Rechargeable Battery. The VMAXTanks specializes in producing high-quality deep cycle batteries especially AGM.

However, this battery gives superior performance as well as 8-10 years lifespan. In a nutshell, the VMAX SLR-125 Battery is a compact pack for often under $300.

We all know solar energy is a little bit different than other application that needs power. So if you wish for a stable power process, this one is top deep cycle battery for RV which give a phenomenal lifespan.

Specification at a Glance

  • The VMAX SLR-125 is perfect for off-grid solar technique which storing energy, giving it back when it is needed in-house.
  • Being AGM deep cycle cell, this great piece contains enough liquids to remain the electrolyte inside.
  • Thanks to its 99% recombination capabilities; it will not produce any dangerous gases or fumes.
  • It is a heavy-duty with 125Ah and 12 Volt. So it is capable enough to power a huge mansion or in the hybrid system.
  • This battery gives a lasting performance of 8- 10 years approximately on float mode. As a result, it is one of the finest battery for heavy-duty work.
  • This cell enclosed by the Electrolyte Suspension process. It contains the electrolyte as well as absorbing it.
  • Featuring Ultra-Low Resistance makes the battery 99% effective and efficient.
  • Due to upgrade assembly technology, this cell ensures a high power density.


  • Sealed Construction
  • Solid enough for harsh weather condition.
  • Silica gel was not used.
  • Fair price range.


  • Cell requires some extra maintenance.


Finally, for dependable performance in heavy-duty work, nothing could be better than this one. VMAX has had supply chain issues in 2021, so click here to check availability at Amazon or keep reading.

2. Weize TL12100 12v 100Ah AGM Deep Cycle Battery (Best Battery For Solar)

When it comes to the solar panel, we take it seriously for source of power. We want to make sure everything is perfect, including the cell. Especially if you are in dry camping or remote off the grid, a reliable cell is a must.

No worries!

This Weize TL12100 AGM battery is designed to keep it in mind. The Weize 12 Volt is a perfect blend of heavy-duty, state of the art, calcium-alloy grid that ensures super duper performance in both cyclic and float applications.

Why we love it?

This awesome power tool is not only great for solar panel energy storage; it works great with wheelchair, trolling motor, industrial/medical equipment, electric vehicles, hunting, golf carts, lawn and garden tools, toys, leisure, camping, emergency lighting, home alarm security, portable tools, and more.

How can you beat that?

The Weize TL12100 comes with AGM technology along with a valve regulated design. As a result, it can be used in enclosed or any indoor environments providing a superior performance for a bunch of models. 

Wow features of Weize TL12100 12v 100Ah Deep Cycle AGM

  • It gives High Performance, Deep Discharge Recover, and Long Service Life.
  • Can be  utilized in a wide variety of purpose and applications.
  • You will enjoy plenty of power.


  • Calcium-alloy grid.
  • Support both float and cyclic machine.
  • Maintainance free


  • The wire harness is not included.


This is a Accumulator that is environment-friendly and capable of functioning well, even in harsh weather. And the best part is without leaking or extra maintenance.

3. Odyssey Extreme PC680 Battery

Searching for a reliable automotive cellfor your car? Well, then this one will be the best choice for you. The significance of automotive battery can’t be ignored. The Odyssey Company was established in the year 2002.

Within shorter time, they gain the popularity for presenting pure lead plate batteries for Vans, Sports Utility (SUV), and Pick Up.

Odyssey Batteries features rugged construction, with a constant pounding. So that it is fit for all territory whether is on snow, land or sea.  As a result, it makes it one of the best deep cycle batteries from the rest of the other.

Noteworthy features of the Odyssey Extreme PC680

  • Thanks to its pure lead plates. It gives twice the power and three times life than the conventional batteries. It ensures up to 400 cycles at 80 percentage depth of discharge.
  • Being non-spillable AGM design, this accumulator saves against the vibration as well as shock.
  • It gives 70% longer life than any conventional Thick cycle batteries. On the other hand, it gives a stable voltage for a long time.
  • Vibration resistance- design fights against extreme temperature as well as protects mechanical vibration.
  • Runs superb in freezing weather as well as adds up a total of 170CCA. On the other hand, it is also very active in hot temperature.


  • Longer cycle life.
  • Mounting flexibility.
  • Faster recharge and High conductivity.
  • Extremely lightweight.


  • Comes without a terminal.


This versatile battery is the perfect choice for an absolute range of power sports applications: snowmobiles, motorcycles, ATVs, ultra-light aircraft, ATVs, and Gyrocopter aircraft.

4. WindyNation 100Ah 12V AGM Deep Cycle SLA Battery

These batteries are the top choice for all sorts of off-grid power, and we can see why.

99.995% pure virgin lead grants for a pretty low discharge rate. And all those are with maximum power storage. 

Sound’s great, isn’t it?

Let’s get to the point.

Why we love it?

A true deep-cycle AGM Accumulator!

The sealed design makes it perfect for various applications such as: floor cleaning, aerial work platforms, golf carts, material handling, inverters, oil and gas, remote telecom, or renewable energy. 

But you know what?

You can use it as recreation purpose (RV, offshore marine, etc). Float life is pretty impressive, 10 to 12 years at 25 degrees C.

Wow features of the Windynation 100Ah 12V AGM Deep Cycle SLA Battery

  • AGM batteries are made by sealed lead acid with heavy-duty plates. As a result, you can enjoy deep, repetitive discharges.
  • Ideal for all types of off-grid power as well as support portable tools or telecommunication.
  • Non-spillable design makes it suitable for the batteries to be used in the power equipment.


  • Deep-cycle performance.
  • Low discharge rate.
  • ImpressiveFloat life


  • The hub terminal is short.


If you want to start out on a small scale or tight budget solar project, this could be a good choice.

5. Battle Born LiFePO4 12V 100Ah Deep Cycle Battery

Made from 100% safe, renewable energy, nontoxic, Battle Born Batteries can be used for more cycles.

So if you yearn for an environmental solution, this could be a handy option.

And the best part?  Battle Born produces sustainable green energy batteries that are renewable.

Why we love it?

As you can see, it’s renewable. That means it can be charged and discharged repeatedly. The coolest part, charge way faster than any other green battery.

Now let’s see the style and dimension.

At a sleek body, it’s lightweight. Believe me or not, it weighs in at 1/3 the weight of the lead-acid batteries!

Apart from these, with no acid, you’re able to mount in any position safely. These li-ion batteries are perfect for off-road RV, campers, marine, and off-grid applications!

Wow features of the Battle Born LiFePO4 100 Ah 12V Battery

  • The lithium-ion technology gives it unlimited mounting capability and is way more cost-effective.
  • Unlike Lead Acid batteries, these lithium-ion batteries have exceptional longevity.
  • Built-in BMS, it monitors the amount of power taken out and acts as a shut-off procedure to save the li-ion cells as well as you from hazardous operating conditions.


  • Charge faster.
  • Versatile
  • Higher capacity.


  • No handle makes it inconvenient

When factoring time, effort, and cost into your purchase, the Battle Born LiFePO4 100Ah 12V battery  comes out ahead almost every time. Most importantly, Li-Ion batteries can be safer than any Lead Acid batteries.

6. Renogy Smart LiFePO4 (Lithium-Iron Phosphate) 12V 100Ah Battery (Best Lithium Battery for RV)

Renogy lithium-iron-phosphate battery has extended lifespan, which is more than 2000 cycles. Meanwhile, the service life is almost double than traditional lead-acid batteries.

As good as it sounds!

Take a step by pairing your solar process with the Renogy Smart LiFe PO4 Battery, one of the safest and deep-cycle batteries yet.

Why we love it?

Safest RV battery so far!  Why am I saying this?

Lithium phosphate cells make it extremely safe. We just fall in love to see that it’s fully sealed and waterproof housing, which helps keep it from leaking or corrosion.

This tool is trully stunning. 

The coolest part, it built such a way that supports wide ranges of applications- you can use it in marine, RV, and Solar applications.

But first a warning:

Make sure you screw the battery terminals in tightly; the loose terminals will cause to build up heat, which may cause damage to the battery.

Wow features of the Renogy Smart LiFePO4 (Lithium-Iron-Phosphate) Battery

  • The built-in battery method optimizes the Battery functionality by balancing the cells automatically.
  • It provides multiple protections against over-discharging, over-charging, short-circuit, over-current, and over-temperature.
  • The Battery is self-discharged. Below 3% per month, it provides shelf life and optimal longevity.


  • Extended lifespan
  • Low self-discharge
  • Compact


  • Parallel only.


Overall, it seems to be solid offering. Rangy lap battery actually exceeds expectation by being compact, & more powerful.

7. Optima Batteries OPT8016-003 D34M BlueTop Marine Battery

Hold onto your hat tight, because the Optima Batteries is ready to blow you away! The Optima brand is well-known in boats with huge accessory loads or for recreational vehicles. Optima batteries are still reasonable. The Optima Batteries BlueTop OPT 8016-003 D34M is a versatile battery with a rating of 750 cold cranking amps, a 12-volt nominal voltage, and 870 cranking amps. However, it’s a dual-purpose battery that is perfect for both deep cycling and starting.

Weighing 43.5 pounds, the D34M is a mid-weight battery that offers better performance of many of its heavier, larger counterparts. In a word, this is a superb battery for use in your RV or on the boat.

Noteworthy features of Optima Batteries OPT8016-003 D34M BlueTop Battery

  • Being rated by 750 cold cranking amps, these batteries provide enough power to apply as an RVs or boats. However, it ensures optimal power yet in cool weather.
  • Thanks to its compact as well as lightweight, this smart battery is flexible to ride in any position on your RV or your boat.
  • Featuring tolerate vibration; these batteries have the exterior casing which is times resistant than any other batteries in the market.
  • 12 minutes of reserve capacity method ensures consistent performance under any circumstances.
  • These batteries come with a two-year warranty, so it manages to gain customer faith. If there is a quality issue or defects of a battery in the first two years, the company will give a place without any charge.
  • With the internal resistance of 0.0028 ohms, this is extremely low compared to the other marine batteries. Meanwhile, it has designed with SpiralCell technology which allows this battery to outperform.


  • More battery life.
  • Consistency performance.
  • Dual-purpose battery.


  • The risk of overcharging.

For more infromation, you also read our detailed review of Optima Batteries.


This battery is one of the best RV Battery in many aspects. Certainly is why we’ve included it on our list.

8. Odyssey PC925 Automotive and LTV Battery

Need a strong cranking Deep Cycle RV battery in harsh condition?

Odyssey has made it possible for someone like you who wants superb RV long cycle battery. At the same time, they have been a respected brand since 1888.

Companies don’t survive around as long by accident. Odyssey proves their worth by presenting a huge range of batteries which are both reliable as well as durable. In a nutshell, the Odyssey PC925 Automotive and LTV Battery is one of the top batteries from Odyssey.

Noteworthy features of the Odyssey PC925 Automotive and LTV Battery

  • It is an impressive battery which supplies 330 cold cranking amps. As a result, it will easily start your vehicle or designated appliance.
  • Thanks to its 3-10 years of utility life. So it saves consumers money, time and aggravation.
  • Being four-year full replacement with Limited 3 warranty, it means the battery will last a considerable amount of time ensuring its reliability.
  • It comes with the highest recharge efficiency which makes it one of the top extendedcycle batteries on the market right now.
  • In the meantime, it can recharge 100 percent within 4 – 6 hours.
  • Featuring Non-spillable design, it has mounting flexibility.
  • Designing with Vibration resistance, it defends any mechanical vibration as well as high impact shock.
  • More than anything, it has 70% longer cycle life than any other regular lenghty cycle batteries. In a word, you will enjoy a powerful solution to the battery-related problem.


  • Fast recharging.
  • Longer shelf life.
  • Maintenance free.
  • Suitable for a different environment.


  • A bit heavy.
  • It fails without any warning which can be dangerous sometimes.


To consume your money, time and aggravation; there is nothing that can be better than this battery.

For more in-depth information, check out  our complete review on Odyssey Batteries.

9. XS Power D3400 XS Series AGM High Output Battery

Looking for the best RV battery for racing?

Well, the XS Power D3400 XS Series AGM battery is one of the finest options for whose want a top class Rooted Cycle Battery at an affordable price range. XS Power offers some great features along with some amazing specification. XS Power never compromises about quality. With the Weight of 48 pounds, the company has designed it for racing.

Noteworthy features of the XS Power D3400 XS Series AGM High Output Battery

  • Enclosed with Sealed absorbed glass mat or AGM design, it makes it a reliable performer in car racing.
  • This battery comes with a extended Cycle AGM Power Cell of 12 volts.
  • Featuring 1000 cranking amps along with the impressive output of 3300 amps. As a result, it can give enough power even in the greatest performing engines.
  • XS Power’s D3400 includes M6 Terminal hardware for install conveniently.
  • It is suitable for several ranges of 2500W – 3500W car audio stereo systems. On the other hand, you can use it as an additional battery to provide the power the high-performance sound system.
  • The most important feature is it can store energy, so you don’t have to spend an extra penny on the capacitor.
  • It meets the standard of Group 34 BCI. So you can easily rely on this battery for your racing car.


  • Leak-Proof
  • Will fit any GM vehicle applications.
  • Non-hazardous design.


  • Not suitable for cold weather.


Considering performance and reliability, this one is the top deep cycle battery for RV available now. 

10. Odyssey 34M-PC1500ST Trolling Thunder Marine Dual Purpose Battery 

Introducing the Odyssey 34M-PC1500ST Trolling Thunder Marine Dual Purpose Battery, it supplies 880 amps for your chosen application. The Odyssey battery line got about 15% more plate surface area that allows reserve capacity as well as more power. Thus, it offers an incredible deep cycling capability and massive starting power which makes it perfect for trolling.

At the same time, it powers the onboard electronic stuff and accessories common in recreation vehicle and boat. That’s why it named after “dual purpose battery. In a word, all in one Odyssey Trolling Thunder Marine is a revolutionary battery in our age.

Noteworthy features of the Odyssey 34M-1500PCST Trolling Thunder Marine Dual Purpose Battery 

  • Featuring Cold Crank Amp 880; up to 400 cycles with 80 percentage depth of discharge. As it is one of the Dense cycle batteries in many aspects.

  • It comes with Vibration resistance- a design which protects mechanical vibration as well as high impact shock. On the other hand, it can tolerate the extreme temperature.

  • The Operating temperatures are from 40degree Celsius to 80 degree Celsius. That means it is 40 degrees Fahrenheit- 176 degrees Fahrenheit.

  • Designing dry AGM with resealable venting structure, it gives a high performance from any other CCA- 880 battery.

  • More than anything, this is totally maintenance free. So you don’t need to add water.

  • It comes with longer service life along with 3-10 years of service life. So it will consume your money, time and aggravation.


  • Longer shelf life.

  • Massive cranking power.

  • Non-spillable battery.

  • Longer cycle life.


  • Quite expensive.


If you are searching for the Top Deep Cycle Battery for marine, this Odyssey Trolling Thunder Marine battery is far better than most any other battery on the market. 

12. Kinetik High Current HC600-BLU Battery

If you’ve already started your search for a reliable battery, then you have no doubt come across the Kinetik brand. When you look at the design of the battery and its technical specification, it is just spectacular. However, it is an audio battery with 600 watts of 12-volt power which is more sturdy than most of the conventional battery. More than anything, this battery is pretty light, just 11 pound and 7 x 3 x 6.5 inches in dimensions. In a word, the Kinetik High Current BLU-HC600 battery is a compact yet a powerful punch which makes it one of the best AGM Car battery compared to most of the regular battery on the market.

Noteworthy features of the Kinetik High Current HC600-BLU Battery

  • This Kinetik HC-BLU features a sealed AGM or Absorbed Glass Mat. As a result, you will enjoy a reliable 600-watt car audio sound system.

  • Being a leak-proof design, it allows providing power cell to suit in the most factory battery environment without any hazardous leaks.

  • This battery can expend 600 cranking amps with an 18 amp hour rating.

  • Thanks to its heat resistance feature. It will resist heat condition as well as vibration.

  • Kinetik has equipped the power cell with various plates for powerful energy density and protects the high voltage.

  • It comes with Stores energy. As a result, there is no need for a capacitor.

  • This battery is incredible for 600W car audio stereo systems which makes it one of the perfect  battery right now.


  • Ultra-low ESR.

  • Ultimate performance.

  • 100% Sealed.

  • No leak design.


  • Can’t support the Headlights well.


When it comes to sound quality, the Kinetik High Current HC600-BLU battery is a great option for your car audio stereo systems. 

13. DieHard 38217 Advanced Gold AGM Battery

DieHard gives a bounce of Batteries for off-road vehicles, but the DieHard 38217 Advanced Gold is pretty cool and ideal as the car battery. Thus, these batteries are a great deal for trucks, marine, and recreational needs. On the other hand, it will suit perfectly for performance cars, watercraft, and tuner cars.

Meanwhile, these are a direct fit for domestic and many imported OEM. Applications including BMW, Audi, Chrysler, Mercedes Benz, Jaguar, Mini, Volkswagen, Porsche, Volvo, Saab, start-stop vehicle applications and much more.

Noteworthy features of the DieHard 38217 Advanced Gold Battery

  • Featuring full plate AGM technology, it ensures longer life as well as more power.

  • DieHard has superior withstand the elevated temperature conditions and enhanced power demands.

  • Thanks to its promote electrolyte suspension method. Thus, it absorbs maximum electrolyte and saves internal components.

  • It comes with 92 AH rating, BCI Gp 49, and CCA 850. The Cold Cranking Amps are 775 along with the Reserve Capacity 170.

  • Designed as Spill-proof it provides extra protection for innovative electronic equipment.

  • 20 times more vibration protection safeguards, 2X the cycle life features make it different from the rest other in the battery industry.

  • Constructed with tamper-resistant and heat-sealed, it gives extra protection. Thus, it is capable enough to perform cooler Northern climates.

  • Maintenance-free battery comes with Sear’s free replacement warranty for three years. So it is a reliable maintenance-free power solution for your car.


  • Longer life.

  • Spill-proof- design.

  • Maintenance free.


  • Tough installation process.


As mentioned above, the DieHard 38217 Advanced Gold Battery comes with some excellent features that we find very impressive. Aside from supply chain issues in 2021, it’s a versatile battery built with quality materials. 

14. Universal Battery UB121000-45978 AGM Battery

The thing that makes the Universal Battery UB121000-45978 the finest battery is its superior performance in any environment. The very first thing you will notice about this battery is its sleek black design. However, it is a 12-volt battery specifically designed for deep cycling. At the same time, it is perfect to use in trolling motor.

Weighing in at 63.93 pounds with 12 volts, this is heavy-duty cell. Moreover, this battery is a compact design along with some amazing features.

Noteworthy features of the Universal Battery UB121000-45978 AGM Battery

The combination of AGM technology and sealed design, it doesn’t need any additional maintenance and ensures a longer lifespan.

  • Engineered and Designed specifically for deep cycling, the battery comes with 100Ah rating which guaranteeing an impressive storage capacity to any equipment. However, it is ideal for that equipment that needs consistent energy even a low cranking current.

  • The Universal UB121000-45978 is a rechargeable battery that can be mounted. At the same time, it resists vibration and shocks.

  • The AGM technology provides faster recharging, longer usage period, and better performance. Thus, it is far better than the lead-acid battery.

  • It is a versatile battery that supports various equipment including solar panels, trolling motors, long cycle battery and other equipment.

  • More than anything, Universal Power Group gives a one year warranty, guaranteeing for 12 months in any manufacturing defects.

  • This battery comes with a standing self-discharge which is less than three percent per month, that makes it the efficient store of energy without frequent charging.


  • Acid proof body.

  • Durable.

  • Resist vibration and shock.


  • Heavyweight


This is the battery which will provide you with excellent performance without any maintenance hassle.

15. Universal Battery UPG 85980/D5722 SLA Battery

Works like a charm!  Yes, you read that right.

Take your RV deep cycle power parts experience to the next level by financing into UPG battery, bringing together to offer a better solution to your solar energy storage.

Why we love it?

This deep-cycle marine battery is being lightweight, holds a great charging capacity. Believe me, even 4 hours trolling trip is also possible. 

Most importantly, it is compatible with different applications, such as:

  • Wheelchairs
  • Electric Scooters
  • Alarms
  • Toys
  • Emergency Exit Lighting
  • ATVs
  • APC Systems
  • UPS Systems
  • Motorcycles

Wow features of the Universal Battery UPG 85980/D5722 SLA Battery

  • The built-in handle, its smaller size, and sealed construction make it way more convenient than a traditional giant marine battery.

  • It is used in spotlights, flashlights, UPS backup systems, exit lighting, and other equipment.


  • Impressive charging capacity.

  • Sealed Lead Acid Battery.

  • Superb flip-up construction


  • Nonstandard batteries required.


The Universal Battery UPG 85980/D5722 SLA Battery is well built, dependable and much more practical for a trolling motor than a full-sized deep cycle charge battery. 

The Ultimate Guide What To Look For Best RV  Battery

Since you made it this far, perhaps you have already decided what to pick, but you have missed a big part my friend. The battery review will not be complete without mentioning the ultimate buying guide.

However, we have already discussed some best RV Battery on the market and hope that aware of it in detail. Here, in this part of the article, we try to cover up the entire buying guide that will help you to decide what to choose. So let’s start:

Starting vs. Deep Cycle battery vs. Dual Purpose

As we mentioned earlier, the mechanism of extended Cycle is a bit different from Dual Purpose or Starting.

Starting batteries are known as cranking batteries, designed to release a huge amount of energy, mainly for a short period. These batteries are suitable for starting engines like inboard/ outboard marine engines or automotive engine.

On the other hand, long-cycle batteries are engineered to discharge a little bit of energy for a long period. Another big difference is by visualizing a marathon runner and a sprinter. Thus, a starting battery is more likely the sprinter which provides lots of power. Meanwhile, the long cycle battery is also a marathon runner who offers less speed but greater endurance.

Dual purpose batteries can both deep cycling and starting engines. But they are not ideal for the performance of extended-cycle battery

Types of  RV Deep Cycle Batteries

Deep cycle RV batteries are engineered of four common types. They are:

  1. Sealed Absorbed Glass Mat
  2. Flooded Lead Acid Deep Cycle Batteries
  3. Gel Sealed
  4. Lithium-ion Deep Cycle Batteries

Each battery has its pros and cons. So what is going to be the right choice for you, it mainly depends on your needs and desire. So let’s have an insight into deep cycle battery types comparison.

  1. Sealed Absorbed Glass Mat

Absorbent Glass Mat (AGM) technology comes to lama light in the early 1980s as a reliable battery for UPS, military aircraft, and vehicles to reduce weight and improve efficiency. However, AGM deep cycle batteries are ideal for Harley Davidsons, boats, trucks, trolling motors, and recreational vehicles.

They are always better, tougher, less maintenance and stronger than flooded batteries. At the meantime, The AGM battery is a kind of lead-acid battery where the electrolyte occupies with a fiberglass mat. There is two types of AGM.

  • Flat plat AGM
  • Spiral AGM

  1. Flooded Lead Acid Deep Cycle Batteries

Flooded lead-acid batteries or wet cells, were discovered by Gaston Plant© in 1859. The term “flooded” is because it contains an amount of electrolyte fluid where the plates are submerged.

However, it consists of lead-oxide plates surrounded by a mixture of water (H2O) and sulfuric acid (H2SO4) which creates an electrolyte.

Furthermore, they need off-season charging and regular maintenance, have to be installed in an upright position and are sensitive to a high range of vibration. But they have a long life cycle.

  1. Gel Sealed Deep Cycle Batteries

Gel batteries are the older version of AGM and faded away its market when the latest version AGM comes. Thus, it has many benefits like ease of transportation, generated gases. On the other hand, it has to charge slower than AGM batteries or flooded lead acid.

In a nutshell, they are the very narrow profile for charging. As a result, it can damage easily if it charged inappropriately.

  1. Lithium-ion Deep Cycle Batteries

The promote Lithium-ion Batteries exceeds the performance of AGM batteries and Flooded Lead Acid. More than anything, they are pretty lightweight and provide charging efficiency between 3000-5000.

The thing we liked most is it’s 2.5 times more efficient in abnormal temperature. It is capable enough to absorb low temperature as well as function safely up to 149*F. However, versatile mounting granted the battery to be installed in any position and direction. The vital fact is that they are very costly.

How deep cycle batteries work

Let me first clear difference between deep cycle and marine battery. The main difference between a regular starter battery and a deep cycle battery is the amount of energy it releases and the way it has been discharged.

Auto howstuff tells us a lot of difference about A normal lead acid battery and a deep cycle battery

Deep cycle batteries are engineered to discharge a decent percentage of capacity. The process is called deep discharge. On the other hand, Starter batteries are designed to discharge a little amount of power at any time.

As the starter battery has to charge deeply, it will affect the total lifespan as well as the ability to charge. Most deep cycle batteries are capable of discharging up to seventy percent without suffering any type of damage. The amount of discharge may vary from manufacturer to manufacturer.

What is The Best RV deep cycle battery? 6 volts or 12 volts?

What will be better for RV, 6 volts or 12 volts? Well, let’s figure out what is the big deal about volts. Generally speaking, a 6-volt battery is a golf cart battery. However, they are the finest versatile batteries available for a cabin, small home, or outdoor.

At the same time, they are ideal for the RV and more cost-effective 12-volt batteries for the long run. Meanwhile, if you tend to go with your RV from park to park and 12-volt deep cycle batteries will be just fine.

But if you are planning to go for boondocking or dry camping where you need the stored energy, you should pick four or six-volt batteries.

Factors to Look For When Choosing a Deep Cycle Battery

Before you pick the RV deep cycle battery for you, you should consider some facts. Which is the top battery? Well, it depends on the purpose you aim it to perform. So have an insight into what factors should be considered in buying an awesome deep cycle battery.

  • Cranking Ampere: The cranking ampere is an important fact to consider before your purchasing decision, as it used to the power supplier when it operates at environment and location with around 35-degree F temperatures. Thus, it gives an idea about the possible performance at different temperatures. So for better performance, go for the battery which has a high cranking ampere rating.

  • Technology Used: Most of the deep cycle battery designed mainly for recreational vehicles with the use of lead-acid technology. However, in the flooded cell batteries are packed in liquid water or an acid solution. We highly recommend picking the battery which has maintenance-free technology.

This technology reduces the risk of releasing electrolytes. But the main problem comes when you charged it heavily or frequently. So first of all, figure out what technology is behind that particular battery to ensure that you are picking the right one.

  • Cold Cranking Ampere: Cold Cranking Ampere refers to the energy supplied by the battery. At the same time, it starts motor obtains power from the battery in a location within less than 0-degree F. However; Cold Cranking Ampere is an important factor to consider. On the other hand, if you want to use your RV in the winter season.

Keep in mind that, battery with Cold Cranking Ampere might be degraded if you apply at low temperatures. Also, remember that; always choose the battery which has the high cold cranking ampere rating. So it can expose to extreme cold temperature.

  • Shock and Vibration Resistance: Ensure that what battery you are picking has vibration and shock resistance. However, it is a must-have feature of the battery. Thus, the battery should capable of withstanding these issues without any failure or drop in performance even in off-roading.

  • Weight and Size: The next thing you should consider is weight and size. Thus, they play a significant role in overall performance. Why are they important? Well, if pick something bulky or heavy, you can’t move it conveniently.

There are lots of manufacturers who produce heavy-duty batteries. Though they are a good option, ensure that they are good enough. Point to be noted is that the weight of these heavy-duty types is up to 2000 pounds with the 12-volt pack. Meanwhile, having near 50-60 small batteries will not be a good decision. At the same time, consider investing in a bigger battery size striving to find a good balance of size and weight.

  • Capacity: The next noticeable thing you should have to look is the battery’s capacity. It’s an essential factor because by this you can assume the proper rating and its working ability. In the meantime, inadequate capacity requires over-discharging regularly. As a result, it will shorten the battery life.

Also, remember that don’t choose an oversized battery for your RV. First of all, figure out the need and the capacity it can fulfill.

  • Brand: First, research what brands are managed to gain customer trust by their great performance. Also, find out what are the reputed brands in this industry. Then, figure out which brands are giving the utmost level of satisfaction. However, some of the reputed brands in this industry are:
    • Universal
    • DieHard
    • Mighty Max
    • Odyssey
    • Lifeline
    • VMAX
    • XS Power
    • Kinetik
    • Optima
  • Cycle Life: what about deep cycle battery lifespan?

The cycle life of an RV battery can be measured derived from discharge cycles or some charges the battery can provide on a specific percentage. Different manufacture tends to create these deep cycle batteries in the same capacity rating.

However, the problem arises when they differ in material, design, quality control, process and experience which have a great influence on its performance. Moreover, it plays a vital role in your buying decision.

  • Price: More than anything, the price is the most vital factor. Thus, compare the feature and prices of a different brand, too. Most of the people think that price is everything to get the excellent RV deep cycle battery.

But you can find plenty of battery which offers an amazing feature at an affordable price. Point to be noted that if you aim to go for the cheapest battery, you have to compromise with the quality. So try to find out that brand who never compromise about quality.

Four Things to Know About Your Deep Cycle RV Battery

Everything in the RV relies on the volt system to perform. Thus, without the RV batteries, your recreation vehicle will not work properly. In a nutshell, RV batteries are mainly long cycle batteries that are designed to keep large amounts of power to work after over a longer period.

Check the Battery Charge

Never use the battery when it consists of less than 50% of charge. So carefully recharge them as soon as possible, and never allow them to work in lower than 20% charge, it will cause damage. However, to avoid this situation follow the manual.

If you maintain it properly, it will last for seven years or even more. Also, follow the deep cycle battery charging instructions and deep cycle battery voltage chart.

The Main Battery

If your battery consists of 12 volts in your main battery, it will supply enough to RV as well as other appliances such as a pump, fridge, and lighting. Also, you can use 2 six volts batteries, but it looks a little weird. So it is an essential factor to look for.

Storing Capacity

We all know RV batteries need big investment, so you should have enough knowledge on how to store it for the last longer.

We recommend never storing when they are discharged, only storing them in the right condition. However, if you want to function it well on your next trip, charge it properly after properly.

Monitoring RV Coach Battery

Disconnect your battery for at least 24 hours earlier checking the voltage. Gravity and temperature play a significant role. However, if you are using a gel battery, you can’t measure the voltage as there is no way to insert the hydrometer. Keep in mind that the lower the voltage, your battery is also charged less.

For example, the wired 6V RV batteries in parallel would be:

  • 100% charged at 12.80 voltages
  • 75% charged at 12.55 voltages
  • 50% charged at 12.20 voltages
  • 25% charged at 11.75 voltages
  • 0% charged at 10.50 voltages

Tips on Maintaining RV Battery

RV batteries are pricey as well as sensitive, and therefore, you should take good care of these batteries. However, here are some tips for maintaining these valuable things.

Don’t Overcharge or Overheat

Keep an eye on the batteries during charging whether the charger is automatic or not. Never allow your battery to become overheated or overcharged. If you feel hot in touch, then immediately disconnect your charger and allow it to cool down.

Optimizing Performance

To optimize the production of an RV deep-cycle/ marine battery, we highly recommend discharge it before it comes to below 50%. Meanwhile, it is a vital factor in its life cycle. However, if your battery is working above 90° F, the service life will be drastically reduced.

Determine the State of Charge

A battery’s state of charge is just the opposite of the depth of discharge. For example, the battery with 30% depth of discharge means 70% state of charge. If you are using the flooded lead-acid battery, then the easiest way to determine the depth of discharge is to use a hydrometer. On the other hand, we suggest a digital voltmeter for maintenance-free batteries.

You can also check maintenance and how to charge a Deep Cycle battery.

The Do’s and Don’ts of RV Deep Cycle Battery

Here are the Do’s and Don’ts you should follow to ensure your battery has a long life.


  • Use safety goggles to keep you secure.
  • Ensure that terminal clamps are placed away from corrosion.
  • Place the electric storage cell is right place and shape using grease or spray.
  • Try to understand the physical signal of electric storage cell problem like dim lights.


  • Don’t forget to turn off the lights while you are leaving the RV.
  • Never allow the electric storage cell run out so check them twice a year.
  • Don’t waste the energy for waiting or idle time.

Another Readworthy: 10 Tips to  Extend a Deep Cycle Battery For RV  – from the KOA Blog

14 Best RV Deep Cycle Battery FAQs

Q: Do RV deep-cycle /marine batteries spread a memory?

A: No. The lead-acid battery does not expend a memory effect. However, it can cycle to different amounts of depth-of-discharge in their service life.

Q: What is the basic difference between a car battery and a deep cycle battery?

A: An engine battery or car battery is designed to offer a rapid burst of extreme energy to start the engine. Thus, they contain a high rate of Cold Cranking Amps (CCA). By contrast, a deep cycle battery is a “house” battery for the RV which will deliver the power of the daily needs. Furthermore, these type of batteries discharges 40% to 50% of its total power.

Q: How do I calculate the RV’s energy needs?

A: Make an audit of the devices or the applicants in the RV and how much Ampere it pulls to perform. Also, prepare a tally of how much it needs per day and how long it lasts.

Q: How are batteries Functioning?

A: Battery works in many systematic ways. You also read this article to learn how RV deep-cycle batteries work.

Our Top Recommendations14 Best RV Deep Cycle Batterys

Every extended cycle barratry in our top list has been entered for its awesome benefits and value it offers. For the top-class high-cycle battery for your RV, we highly recommend the VMAX SLR-125 Deep Cycle SLA Rechargeable Battery.  The VMAX SLR is so far one of the finest deep cycle batteries on the market right now and the top seller product on Amazon when in stock. Given the VMAX supply chain issues, though, you might consider another battery on this list to meet your needs.

14 Best RV Deep Cycle Battery – Wrapping 

However, we have already discussed some reliable RV Deep Cycle Battery on the market and hope that you are aware of it in detail.

But out of these best RV Deep Cycle Battery reviews, which one did we recommend as the top performer?

Let’s narrow it down:

  • Best Overall: Universal Battery UB1210000-45978 AGM Battery
  • Runner up, Best value: VMAXTanks VMAXSLR 125
  • Best Budget: Odyssey PC680 Battery

Now it’s your turn. The choice is yours.