If you want to buy or already own an RV, you should consider getting the best RV deep cycle battery to power your appliances while in it. A deep cycle battery is better than a standard battery as it withstands longer periods of discharge.

Your RV batteries need to be durable, have bigger capacities, and come with a long shelf life. For your deep cycle battery to serve its purpose well, you need to get the size right; with knowledge of the appliances you have in the RV that will need to be powered simultaneously.

Also, you will need to understand your location and how easily you can recharge the battery if it ran out of juice. This article will discuss the best deep cycle battery for your RV and a few factors you need to keep in mind when buying one.

1. WindyNation 12 Volt AGM Deep Cycle Sealed Lead Acid Battery

WindyNation 100 amp-Hour 100AH 12V 12 Volt AGM Deep Cycle Sealed Lead Acid Battery - Solar RV UPS...
  • WindyNation 100 amp-hour, 12 Volt heavy duty deep cycle AGM sealed lead acid...
  • Ideal for all types of off-grid power: Solar Systems, RV's, UPS, Off shore...
  • 99.995% pure virgin lead allows for an extremely low discharge rate and maximum...
  • Technical and physical specifications can be viewed in the photo gallery (image...
  • 100 Amp-Hours at the 10 hour rating. 110 Amp-Hours at the 20 hour rating! 1 year...

It would help if you had an RV battery you can rely on for many years, which is what you get from this WindyNation 12V absorbent glass mat or AGM deep cycle battery. It comes with a 12-year shelf life to be your ideal source of off-the-grid power.

It offers 100 amp hours and does not require much maintenance like other wet-cell batteries. Also, it is manufactured using 99.95 % pure lead to offer a very low discharge rate in calm climates. However, this discharge rate could get higher in hotter climates.

With a 100Ah capacity, these AGM batteries will keep your lights on, your appliances powered, and all devices charged. It also comes in a sealed, non-spill case that only prolongs durability.

The WindyNation battery is also relatively affordable and comes with excellent offers when you buy more than one piece. It weighs 66 pounds and also comes with a full 1-year warranty.

Pros

  • Ideal for deep, repetitive discharges.
  • Made with pure lead to offer low discharge rates.
  • Offers a longer battery life.
  • Comes with a durable, sealed exterior.
  • 12-year shelf life.
  • Comes with a full 1-year warranty.
  • Best for RVs.

Cons

  • Fails to charge fully after a while.
  • Not ideal for hot climates.
  • Difficult installation for some people.
  • A bit heavy.


2. Renogy Deep Cycle AGM Battery 12 Volt 100Ah for RV

Sale
Renogy Deep Cycle AGM Battery 12 Volt 100Ah for RV, Solar Marine and Off-grid Applications, Gray
  • Maintenance Free: Manufactured with thick absorbent glass mat (AGM) separators...
  • Excellent Discharge Performance: Proprietary quinary alloy plates and specially...
  • Long Shelf Life: Made of high purity materials, Renogy Deep Cycle AGM Batteries...
  • Wide Operation Temperature Range: Improved electrolyte formula ensures stable...
  • NOTE: We highly recommend installing the battery upright. It is allowed to...

You won't worry about high maintenance costs if you buy this Renogy RV battery. It is designed with thick AGM separators, and an advanced valve-regulated technology to prevent leakages, thus no need for frequent maintenance.

It is also your best deep cycle RV battery if your RV is solar compatible, and you will only need a standby power supply battery for emergencies of off-seasons. It works perfectly in all climates, apparently discharging about 3% in hot climates.

The battery comes with a 100Ah capacity to power your appliances and keep your RV lights on. It also comes with a 600-cycle shelf life and weighs 64 pounds.

When you look for your best deep cycle battery, you consider durability as one guiding factor. This battery comes with top-quality construction with quinary alloy plates and treated grids that allow better discharge rates than other deep-cycle RV batteries.

The lead-acid battery is your best RV deep cycle battery when you have other solar options. You can choose between a 100Ah and 200Ah model. Renogy also recommends installing the battery in an upright position to avoid leakages.

Pros

  • Excellent 600-hour lifespan.
  • Decent compact size.
  • Best for backup power.
  • You can choose between 100Ah or 200Ah batteries.
  • Durable construction.
  • Easy to install in an upright position.
  • Comes with easy-carry handles.

Cons

  • The battery is long, which could make it hard to install in some RVs.
  • Quite heavy.


3. Interstate Batteries 12V 35Ah Deep Cycle Battery

Interstate Batteries 12V 35Ah Deep Cycle Battery (DCM0035) Rechargeable Replacement Mobility Battery...
  • DEEP CYCLE MOBILITY BATTERY: Interstate Batteries DCM0035 professional-grade,...
  • DCM0035 BATTERY REPLACEMENTS: Compatibility Fit Guide located under Product...
  • RECHARGEABLE, MAINTENANCE-FREE, SPILL-PROOF: Rechargeable, maintenance-free, &...
  • HIGH-QUALITY, HIGH-PERFORMANCE BATTERY: No other brand puts their products...
  • MOST TRUSTWORTHY POWER SOURCE: Since 1952, Interstate Batteries purpose has been...

If you want a compact deep cycle RV battery, look no further than this 12V 35Ah battery from Interstate. It is your best buy if you would like a small, powerful battery you can use to power one or two appliances and keep the lights on in your RV.

It is a sealed-lead-acid (SLA) battery that requires minimal maintenance thanks to the AGM and valve-regulated technology used in its design. It is your best bet for no leaks or overpressure. Additionally, this battery is quite lightweight at only 23 pounds and easy to install.

The battery is highly durable and withstands repetitive deep discharges well. However, its downside is the 35Ah capacity that may not be enough for a busy RV. Other than that, it is an affordable option for you if you are getting started with RVing and is also a great backup power option.

Pros

  • Compact and lightweight deep cycle battery.
  • AGM and valve regulated technology to eliminate spilling and pressure build-up.
  • Durable.
  • Excellent discharge rates.
  • Comes at an affordable price.
  • Comes with a 1-year warranty.
  • Easy to install.

Cons

  • The small capacity not enough to fully power RV.


4. VMAXTANKS VMAX 12 Volt Deep Cycle Battery

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Vmaxtanks VMAXSLR125 AGM 12V 125Ah SLA Rechargeable Deep Cycle Battery for Use with Pv Solar Panels...
  • 12 Volt 125Ah Group 31 AGM Deep Cycle Heavy Duty Battery
  • Military grade custom made plates
  • Float service life span of 8 to 10 years
  • Designed for 99% recombination capabilities; no dangerous fumes or gases.

This is your best RV deep cycle battery if you need an option you can rely on to power all your appliances and keep water hot and lights on. It comes with top-quality construction in a rugged design that uses lead-tin alloys for durability.

The deep cycle battery will work in different temperatures ranging from -4 to 140°F. It comes with an absorbent glass matting between the plates, making it resistant to shocks and vibration, thus improving its efficiency.

The deep cycle battery comes with a capacity of 125Ah to last you long, and it is also designed to withstand repetitive deep discharges. The only challenge you will find with this battery is its size; it is heavy and big compared to other deep cycle batteries you will consider for your RV. You may even need to confirm its compatibility with your RV.

Despite the size, the battery is reliable, durable, and also comes at a friendly price. Aside from your RV, you can also use this best deep cycle battery for inverters, solar panels, and wind turbines.

Pros

  • Durable, military-grade construction.
  • Non-spillable design.
  • Designed to withstand and recover from repetitive discharges.
  • Shock and vibration-proof.
  • Fumeless discharge good for your health and the environment.
  • Large 125Ah capacity to easily power your RV for many hours.

Cons

  • Very heavy at 75 pounds.
  • Less reserve capacity compared to other batteries.


5. Optima Batteries for RVs

Optima OPT8016-103 Batteries D34M BlueTop Starting and Deep Cycle Marine Battery
  • 12-Volt, 750 Cold Cranking Amps, Size: 10 inches x 6 7/8 inches x 7 13/16 inches...
  • Optimal starting power even in bad weather
  • Mountable in virtually any position. Works well as a boat battery or RV battery
  • Fifteen times more resistant to vibration for durability
  • Reserve capacity of 120 minutes for constant performance

If you want high performance, this marine battery is your best buy. It is a high-quality RV battery that is maintenance-free and spill-proof.

Optima batteries are more resistant to vibrations than other conventional deep cycle batteries, thus guaranteeing longevity and no overpressure. Also, they will work in extreme temperatures.

One other great feature you will love is the 2-hour reserve capacity, and you can mount them in different positions. It comes with a durable case, for which you can choose different top colors. You will need the blue top battery for your RV so you can use it for a dedicated starting battery.

It is a lightweight battery and comes with a 55Ah battery capacity.

Pros

  • The battery is fifteen times more resistant to vibrations compared to another deep cycle marine battery.
  • Lightweight.
  • Maintenance-free and spill-proof.
  • Offers 120 minutes of reserve capacity.
  • Ideal for starting power even in extreme weathers.
  • Easy to use.

Cons

  • May not withstand repetitive discharging for long.
  • Pricey.
  • Loses 100% rechargeability after a few months.


Factors to Consider When Buying Your Best RV Deep Cycle Battery

Buying a deep cycle battery requires special considerations, and even more so when you want to buy for your RV. To make it easier for you, these are the most important factors you need to keeping mind;

  1. Power capacity
  2. Weight and size
  3. Wet cells versus absorbed glass mat batteries
  4. Discharging and charging
  5. Lifespan

a) Deep cycle batteries capacity

When you are buying your best RV deep cycle battery, it is best to consider the capacity. The battery capacity dictates how long your RV can be powered; lights, appliances, and gadgets, by the battery alone.

When in the market, you can find your best RV house battery with a capacity anywhere between 35Ah to 200Ah. This measure also indicates long battery life.

You can decide on your ideal capacity guided by your RVs power consumption, meaning you should consider how much power you need to keep your appliances on all the time and how long you will keep your lights on.

In simple terms, if you have appliances like a TV, refrigerator, washing machine, and more, you will require a higher battery capacity. Alternatively, if all you work with are bulbs and a cooking stove, a low-capacity RV battery can suffice.

b) Battery size and weight

When choosing the size and weight of your deep cycle batteries for RVs, you get to decide whether you need a lightweight model so you can install it with ease.

Lithium-ion batteries are more lightweight compared to lead-acid batteries. Additionally, a lithium-ion deep cycle battery is energy efficient, so you don't worry about running out of power.

On the other hand, lead-acid batteries are heavier and may even come with a larger battery capacity. However, the weight could make it difficult to install or tamper with your ideal weight and balance if you use them for boats.

c) Type of RV batteries

When looking for your best RV batteries, you can choose between wet cell flooded battery or an AGM battery.

While both are durable and reliable deep cycle batteries, the big difference is maintenance configurations. In short, wet cell batteries require occasional maintenance and often by professionals. On the other hand, an AGM battery does not require maintenance as it is sealed.

Wet cell, or flooded batteries, lose water and acid solution with every use, while AGM technology seals the acids and water for no leakage. Thus, you get a maintenance-free operation.

d) Discharging and charging

When buying your RV batteries, you also need to understand the battery's discharge depth, called depth or discharging, or DoD. Discharge depth is the percentage of a discharged RV battery compared to its overall power capacity.

It is a measure that indicates how long the battery can serve after numerous cycles of deep discharge and recharging. To get a durable battery, understand the DoD so you can buy the one that will have a longer lifespan.

e) Battery lifespan

When buying a battery for your RV, you need to know that the battery's lifespan reduces with every discharge and recharge. Additionally, most batteries have instant high current discharging when you install them, meaning they will be discharging even when all your appliances are off.

As such, you will need to keep recharging the battery, which will result in lost maximum capacities over time. For example, if your battery has a capacity of 100Ah when new, you will find this capacity reduces as you continue to use it. So, even when fully charged, the battery will not reach 100Ah capacity.

Your best RV battery needs to have a long shelflife; at least ten years before it starts losing the maximum capacity.

How to Maintain Your RV Deep Cycle Batteries

Once you buy your wet cell or AGM batteries for your RV, you can use these simple tips to prolong their shelflife.

  1. Recharge the discharged lead-acid deep cycle battery as soon as you can to prevent sulfation.
  2. Always ensure a 12V battery reads a voltage of 12 volts and above. Thus, don't let it discharge to below 12 volts as this would interfere with the correct depth of discharge you need to be observing. Charge your best RV battery when it gets to 50% discharge.
  3. Install a battery disconnect switch in your RV so you can switch the battery off when you're not using the RV. Doing so will help you preserve battery life that would otherwise be consumed by simple loads such as TV antennas, gas leak detectors, clocks, circuit boards, and more.
  4. If you need to add water to your wet cell or flooded lead-acid batteries, use distilled water to prevent calcium sulfation. Also, it is best to water the plates after charging.
  5. Invest in a 3-stage RV battery charger or a converter charger. It should offer bulk charge, absorption charge, and float charge to preserve the battery's shelf life.
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