RV Battery 12V VS 24V

RV Battery 12V VS 24V : 14 Factors Discussed

Last Updated on July 31, 2022

If you’re choosing a battery for your RV, you’ll have a few options. Without an appropriate battery voltage capacity, your RV will be nothing more than an oversized camper. It can be hard to know which one is right for you. It might make you confused about which RV battery 12V vs 24V would suit your vehicle.

Both have their pros and cons, so it’s important to understand the differences before making a decision. 12V batteries are less expensive and easier to find, but they don’t provide as much power as 24V options.

It is important for a user to know the difference between 12v and 24V RV batteries because they have different power capacities. 12v batteries are typically used for powering smaller RV appliances, while 24V batteries are typically used for powering larger RV appliances.

If you are precautious, you should know which type of battery to use for which appliance can help prevent overloading and damage to the RV. Using the wrong type of battery can void the warranty on the appliance. It is essential for users to be aware of the differences between 12v and 24v RV batteries in order to avoid potential problems.

What is the Difference Between 12V and 24V RV Batteries?

What is the Difference Between 12V and 24V RV Batteries

Number of Cells: The number of cells in a battery determines the voltage output. A 12v RV battery has 6 cells connected in series while a 24v RV battery has 12 cells connected in series. The number of cells also determines the amount of energy that can be stored in the RV battery.

Generally, the more cells in a battery, the longer it will last. 24v batteries may not last as long as 12v batteries if they are used in applications that require high currents, such as starting an RV engine. The number of cells in an RV battery determines its voltage and capacity.

Battery Size: Based on the voltage they produce, RV batteries come in different sizes. The two most common voltages are 12V and 24V. 12V batteries are typically smaller than 24V batteries, making them more convenient for RVers who want to save space.

24V batteries provide more power and can run for longer periods of time before needing to be recharged. They are often the preferred choice for RVs that have more extensive battery needs. The decision of which battery size to choose depends on the individual needs of the RV owner.

Heat Tolerance Capacity:  There is a significant distinction between RV batteries with 12V and 24V, when it comes to heat tolerance. 12V batteries are much more heat-sensitive and can be easily damaged by prolonged exposure to high temperatures.

24V batteries have a much higher heat tolerance capacity and can withstand higher temperatures for extended periods of time. 24 volt batteries are the better option for RVs that are routinely exposed to high temperatures.

Capacity: A 12 volt battery can store about 50 amp hours of power, while a 24 volt battery can store twice as much, or about 100 amp hours. This means that a 24 volt RV battery can power your RV for twice as long as a 12 volt battery before it needs to be recharged.

24 volt batteries are more expensive than 12 volt batteries. This is because they require more material and labor to manufacture. 24 volt batteries are usually only used in RVs that have large electrical loads, such as fifth wheels and motor homes. If you have a smaller RV, or one with relatively low electrical needs, a 12 volt battery will be sufficient.

Price: Price is always a consideration when outfitting an RV, and this is especially true when it comes to choosing batteries. 12V batteries are the most common type of RV battery, and they are typically less expensive than 24V batteries.

24V batteries offer a number of advantages over 12V batteries, including a longer lifespan and higher power output. As a result, many RVers find that the extra cost of 24V batteries is worth it in the long run. When it comes to choosing between 12V and 24V RV batteries, price is only one factor to consider.

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What is the Similarity Between 12V and 24V RV Batteries?

What is the Similarity Between 12V and 24V RV Batteries

Both 12V and 24V are Lead Acid Batteries

Lead acid batteries are dependable, have a long shelf life, and are relatively inexpensive. Lead acid batteries are also recyclable, which helps to reduce environmental pollution. Recycling lead acid batteries prevents the release of toxic heavy metals into the environment and conserves energy and resources.

One of the main reasons why lead acid batteries are good is that they are very dependable. They can withstand extreme temperatures and vibrations, making them ideal for use in vehicles.

Lead acid batteries also have a very long shelf life, often lasting for several years with proper care. Lead acid batteries are relatively inexpensive compared to other types of batteries.

They Both Have Lead Plates Inside the Battery

One of the main similarities between 12V and 24V lead-acid batteries is that they both use lead plates submerged in sulfuric acid. The lead plates serve as the electrodes, and the sulfuric acid acts as the electrolyte.

When the battery is discharged, the chemical reaction between the lead and sulfuric acid creates an electric current. Another similarity is that they can both be recharged by applying an electric current to the electrodes. This reverses the chemical reaction, allowing the battery to be used again.

Both 12V and 24v Batteries Are Used for Starting the RV

Advantages Using a 12V battery in RVs

  • Weight: Lithium batteries are almost half the weight of lead-acid batteries making them much easier to handle when it comes to installation and maintenance.
  • Volume: Lead-acid batteries are bulky due to the fact that they contain a lot of water. Lithium batteries, on the other hand, are much smaller in size which makes them more space-efficient.
  • Efficiency: Lithium batteries can be discharged and recharged much more efficiently than lead-acid batteries. This means that you’ll be able to get more use out of them over time.
  • Cost: Lithium batteries are initially more expensive than lead-acid batteries but they will last longer which means you’ll save money in the long run. If you’re looking for a battery that is more efficient, lightweight, and space-saving, then a lithium battery is the way to go.

Advantages Using 24V battery in RVs

  • Higher power: 24V batteries provide a higher level of power than 12V batteries, making them ideal for running high-powered appliances such as air conditioners.
  • Less overheat: 24V batteries are less likely to overheat than 12V batteries, making them safer to use in hot weather.
  • Charges quickly: 24V batteries can be charged more quickly than 12V batteries, which is convenient when you need to get back on the road quickly.
  • Longer lifespan: 24V batteries tend to have a longer lifespan than 12V batteries, meaning you won’t have to replace them as often.

Disadvantages of using 12V battery in RVs

  • One downside is that 12V batteries are not as widely available as other types of batteries, so it can be difficult to find replacement batteries if yours goes bad.
  • 12V batteries tend to be less powerful than other types of batteries, so they may not be able to run all of the RV’s appliances.

Disadvantages of using 24V battery in RVs

  • One downside is that 24V batteries require more maintenance than 12V batteries. In order to keep them functioning properly, you need to regularly check the electrolyte levels and clean the terminals.
  • 24V batteries tend to be more expensive than 12V batteries.

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How do you Know Which Battery to Choose?

How do you Know Which Battery to Choose

RV batteries aren’t just about the size; the first thing you need to consider is what voltage you need. The two most common voltages for RVs are 12-volt and 24-volt. If you have a smaller RV, then a 12-volt battery will likely suffice. If you have a larger RV or one that has more electrical equipment, a 24-volt battery would most likely be required.

Another factor to consider is how much power you will need to run your RV. If you only need to run a few basic appliances, then a 12-volt battery should be sufficient. If you need to run multiple appliances or run them for extended periods of time, then you will likely need a 24-volt battery.

Finally, you also need to consider the cost of the batteries. 12-volt batteries are typically less expensive than 24-volt batteries, so if cost is a factor, then that may be the deciding factor for you. The decision of which battery voltage to choose for your RV depends on your individual needs and preferences.

How Do You Maintain Your RV Battery Prolong Its life?

How Do You Maintain Your RV Battery Prolong Its life

It’s important to take steps to prolong their life.

1. Keep it clean: One of the worst enemies of a battery is dirt and grime. That’s why it’s important to keep your battery clean and free of debris. A simple way to do this is to use a toothbrush and some baking soda to scrub away any build-up.

2. Avoid extreme temperatures: Both extreme cold and extreme heat can shorten the life of a battery. That’s why it’s important to store your battery in a cool, dry place when it’s not in use.

3. Charge regularly: If you let your battery run all the way down before charging it, you’ll shorten its overall life span. To avoid this, charge your battery regularly, even if you’re not using it.


1. Can You Put a 24V Battery In a 12V System?

The answer is maybe, but it’s not recommended. Here’s why: most 12v systems are designed to work with lead-acid batteries, which have a nominal voltage of 12.6v. 24v batteries are typically lithium-ion batteries with a nominal voltage of 25.2v. While it’s possible to connect a 24v battery to a 12v system, the higher voltage could damage components or cause the system to operate less efficiently.

Putting a 24 volt battery into a 12 volt system can cause damage to the system and pose a safety hazard. The increased voltage can overload the system and cause wires to overheat or catch fire. Using a 24V battery in a 12V system will reduce the overall efficiency of the system and shorten its lifespan. For these reasons, it is always best to use the voltage rating that is specified for your particular system.

2. How Long Will a 24V Battery Last with an Inverter?

This depends on a few factors, such as the size of the battery, the wattage of the inverter, and how many appliances are plugged into the inverter. A small battery may only run a 100 watt light bulb for a few hours, while a larger battery can power multiple appliances for several hours or even days.

The number of appliances also plays a role in how long the battery will last – if only one appliance is plugged in, it will use less power than if multiple appliances are running at once. By taking these factors into consideration, you can get a better idea of how long your 24v battery will last with an inverter.

3. Does a 24V Battery Charges Faster Than a 12V Battery?

The difference between a 12 volt and a 24 volt battery is the amount of current that flows through them. The 24 volt battery will charge faster because the current is greater. This is due to the fact that the voltage is doubled, so the current is doubled as well.

The reason that the current is greater is because there are more electrons flowing through the battery. When you have a higher volume of electrons flowing through the cells in the battery, it will charge faster. If you were to put a 12 volt battery in a 24 volt charger, it would take twice as long to charge because the current would be halved.

4. Does a 24V Battery Discharge Slower Than a 12V Battery?

The answer to this question depends on a few factors, including the type of battery and how it is being used. A 24 volt battery will discharge more slowly than a 12 volt battery under the same conditions. This is because a 24V battery has twice as many cells as a 12V battery, so it can store more energy. 

When discharging at the same rate, a 24V battery will last longer than a 12V battery. If the 24V battery is being used to power high-draw devices, such as lights or motors, it will discharge more quickly than a 12V battery.


If you’re looking for a battery that will charge faster, last longer and discharge more slowly, a 24V battery is the way to go. It will discharge slower than a 12V battery, and it can store more energy. A 24V battery can provide power for multiple appliances with careful use.

Keep in mind that when using a 24 volt battery in a 12 volt system, you may experience decreased efficiency and shortened lifespan of the system. Overall, a 24V battery is a great choice for those who need a long-lasting, reliable power source. Thanks for reading.

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