Best Rv Battery (Deep Cycle) – Do NOT Buy Before Reading This!

You’re probably wondering, are car batteries the same as RV batteries? All RV’s need a set of “house” batteries that power the 12 volt needs, as well as a starting battery meant to power the engine. House batteries may be comprised of several batteries wired together whereas the engine battery is just the same as car batteries, except larger. Before rounding up the best RV batteries in the market, let’s first learn the differences between house and starting batteries.

First and foremost, house batteries are designed to provide energy over long stretches of time while engine or starting batteries offer quick bursts of energy aimed at getting the engine going. Here’s a good comparison: if the house battery is a marathon, the engine battery is a 100-meter dash.


RV House Batteries​

RV house batteries are designed for low power and go through “deep-cycling”. These batteries are usually fully-discharged before they get recharged again.

The best deep-cycle batteries may perform better than engine batteries and may last up to four times longer than standard engine batteries under the same conditions.

Users can rate house batteries according to its AH (Amp-Hours) battery capacity which tells the total number of power the battery can deliver over a 20-hour time frame. The bigger the AH, the more powerful the battery is.​

RV Starting Batteries​

The battery used to start the engine is known as chassis battery or a starting battery. These batteries supply significant amounts of starting currents for short periods. They possess numerous thin plates for maximizing the plate area that is exposed to the electrolyte, resulting in the production of large currents in short bursts.

Starting batteries have a Cold Cranking Amps (CCA) rating. CCA denotes the number of amps a single battery can deliver under a temperature of 0 degrees F for 30 seconds, provided that the amp rating should not drop below 7.2 volts. Starting batteries should not be used for deep cycle applications.

Marine Batteries​

There are deep-cycling house batteries, there are starting batteries, then there are marine batteries. Marine batteries are the result of an attempt to mix the characteristics of starting and deep-cycling batteries.

Actually, marine batteries aren’t great as a whole or for either purpose, yet they’re less expensive, and they may be suitable for some situations. They have a lower CCA rating and a greater deep cycle.

RV Battery Technology​

Currently, all RV batteries employ lead-acid technology. However, there are different lead-acid battery packages.

First, we have the flooded cell battery wherein the cell is soaked in an electrolyte solution which diminishes as you use it, requiring the addition of water from time to time.

On the other hand, AGM (Absorbed Glass Mat) batteries are designed to minimize the loss of the electrolyte solution through effective sealing and utilizing sponges made of glass fibers.

We also have the gel type batteries which rely on thick electrolyte pastes and are also sealed firmly like the AGM.

What Type Of RV Battery Should I Use?​

What Type Of RV Battery Should I Use

Your RVing style will determine the battery type you need for your motorhome.

If you have a simple style of looking for a campground then setting up electricity and such, a marine battery will do fine. They’re cheap, and they last quite longer than starting batteries.

On the other hand, if you go through terrains and has a rough camping style, you’ll need a battery with a large capacity such as a good deep-cycling battery. These batteries may run up to 4 to 10 years and costs twice as that of marine batteries.

There’s the 6-volt, golf car battery which is a popular kind of house battery. They are rugged, long lasting, and two sets of it can be wired together to form a 12V source. A 12V power supply is ideal for various household appliances and amenities found in an RV.

Engine-starting batteries are the cheapest 12V batteries available in the market, but they’re not as long lasting as deep-cycling house batteries.

Product Reviews: Our Top 5 Picks For The Best RV Batteries Of 2018

Optima Batteries 8016-103 D34M BlueTop Starting and Deep Cycle Marine Battery

Designed as a dual purpose battery, the Optima D34M BlueTop functions both as a starting and deep cycle battery. Outdoor enthusiasts looking for a sure-starting and maintenance-free 12V battery for their motorhomes or boats can rely on this terrific power source even in harsh conditions.

It boasts a unique SpiralCell design with the formation of continuous lead plates to maintain optimum performance. Consequently, the design provides a strong, clean, and safe power source for you and the environment.

This battery model has a high reserve capacity (about 120 mins) and optimal starting power, offering a longer shelf-life and sufficient power when and where you need it – even in bad weather!

With regards to vibration resistance, this one tops the list. Vibration from trolling motors and moving RVs and other vehicles can damage a battery, but this one is 15 times more resistant to vibration than other marine batteries.

Additionally, the battery offers a faster recharge time so you can spend less time worrying about your power and more time for fun.


  • Lightweight
  • Functions both as a starting and deep-cycle battery
  • Recharges fast
  • Has a high reserve capacity
  • Starts even in bad weather
  • Long-lasting


  • Comes in a faulty packaging (the battery isn’t well-protected by the packaging)
Universal UB121000-45978 12v 100AH Deep Cycle AGM Battery 12V 24V 48V(Black)

This AGM battery for electrical motors yields an excellent deep-cycle performance rating that can crank a high voltage of up to 13.6 to 13.8 V. Moreover, this multipurpose power source can be used on your boat, motorhome, scooter, golf cart, wheelchairs, and other gadgets.

The AGM technology allows the battery to be mounted in any position and be shock and vibration-resistant. Interestingly, its performance can be regulated by a valve.

We ordered six of these to be installed on our boat for our wayfaring around the Central American coast and we’re quite satisfied with it so far. They were in great shape when we received them, and all 6 batteries had a measured voltage of 12.89 which was very impressive.

After a week of running, the refrigerator, WiFi, LED lightings, and a 12V rainwater pressure pump, the voltage had only dropped from 12.89 to 12.6, which is very negligible by the way. Considering that we also have 5 panels totalling 650 watts running that time to maximize the solar radiation, we were very impressed with this battery’s longevity.

Our only suggestion for the manufacturer of this battery is to make the stainless hardware to be about 1/2" longer. It is about 1" long and can accommodate 2 connections per terminal but any more or thick terminals, you run out of thread.


  • Lightweight
  • Versatile
  • Recharges fast
  • Starts even in bad weather
  • Long-lasting.


  • The stainless steel hardware is too short for additional connections
Odyssey Battery PC925LMJT Automotive Battery

With its 10-year service life, choosing the Odyssey PC925LMJT is a great and practical choice. It is an exceptional RV battery that offers extensive cycle life. Specifically, the cycle life of this item is 70% greater than most batteries that are using conventional deep cycles. As per rating, it can provide up to 400 deep cycles at a depth of discharge of 80 percentage.

I also noticed that this batter could offer extremely stable performance. It can maintain a prescribed voltage level for long durations without fluctuations. This RV battery also provides a quick charging feature. In just four to six hours of charging, this battery can reach full capacity again. You will enjoy such capability especially going on interstate trips and distant ventures.


  • Flexible mounting system
  • Construction prevents spillages
  • Fast charging lead battery
  • Extensive lifespan
  • Provides sufficient resistance against vibrations.


  • Experiences difficulties especially when subjected to high temperatures.
WindyNation 100 amp-Hour 100AH 12V 12 Volt AGM Deep Cycle Sealed Lead Acid Battery - Solar RV UPS Off-Grid (1 pc 100 amp-Hour)

WindyNation has produced yet another impressive RV battery. This particular 12-volt battery features a heavy duty that can withstand severe punishments on the road. It comes with rugged plates that enable it to do repetitive deep cycles. Of course, with such capability, you can expect that its performance will always remain stable and enduring.

As expected from a WindyNation product, this lead battery is a great option for different types of outdoor applications. It can be used on RVs, UPS, solar systems, and even marine vehicles. It has also been noted that it can be used with portable off-grid tools and telecommunication devices. The lead ensures that it can keep low discharge rates without compromising its power.


  • A versatile battery that can be used on different applications
  • Resistant to physical and chemical hazards
  • Capable of doing repetitive deep cycles for extensive periods
  • Long lifespan
  • Can be recharged quickly.


  • No noticeable drawbacks.
Sealed Lead Acid (AGM) Deep Cycle Battery - DCM0035 replacement battery

Weighing at just 23 pounds and featuring a compact body, the Interstate DCM0035 might be one of the best portable battery options for trolling motors available. Though it’s light and compact, it packs enough power to run a trolling motor for several hours of continuous usage.

Aside from its compact form and lightweight factor, this little power source has a few other advantages. It features a thick exterior made of plastic which keeps it protected from bumps, intense vibrations, and other untoward accidents without affecting its performance.

The battery also mounts easily at any angle, thanks to the AGM technology. The AGM technology also ensures that the battery will charge faster as compared to regular lead acid cells and it also does not require any maintenance, as a typical lead acid battery would.

However, potential users should note that this battery won’t work for golf carts and won’t give off power as a large-capacity battery would.


  • Lightweight
  • Compact
  • Has a sturdy built
  • Recharges fast
  • Starts even in bad weather


  • The battery doesn’t last that long as compared to other lead-acid batteries
  • Not very versatile
  • Doesn’t have a large capacity.

The Verdict

After a long and extensive deliberation, we came up with the Optima Batteries 8016-103 D34M BlueTop Starting and Deep Cycle Marine Battery as our top pick for the best RV battery.

Since it’s designed to function both as a starting and deep cycle battery, it automatically eliminates the need to choose either of the two. Also, it offers terrific power, is vibration-resistant, has a high reserve capacity, is sure-starting even in extreme conditions, and is maintenance-free.

It boasts a unique SpiralCell design with the formation of continuous lead plates to maintain optimum performance. Consequently, the design provides a strong, clean, and safe power source for you and the environment.

Hey, camper! What’s up? What battery do you use to power your RV up? Do you think we missed some great options in our roundup list? Do comment your thoughts and suggestions below! Don’t forget to share this post too. Cheers!​

Best Rv Battery (Deep Cycle) – Do NOT Buy Before Reading This!
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