Posted on June 25, 2024
Preparing to buy new batteries for your RV?
Our RV battery guide will provide you the information you'll need to make an informed decision about which type of RV battery will suit your needs best.
We've included a quick-battery comparison chart and the advantages and disadvantages for each battery type to make your battery-buying decision easier.
Let's get started.
When it comes time to replace or upgrade your RV battery, you have two choices: buy the same type of battery or choose a different battery to enhance your camping style.
RV batteries come in four primary types: flooded lead-acid, gel-cell, AGM, and lithium. Understanding the differences between these battery types will help you determine the best RV battery choice for your RV.
Want to try out a different type of RV battery system than what you have or want to buy? Rent an RV and see if you'll need solar and lithium batteries or if you prefer to camp hooked up to shore power and only need an AGM, gel-cell, or lead-acid battery.
Lead-acid batteries are the most common type of RV battery. These batteries require regular maintenance and take a long time to charge. Lead-acid batteries are also called flooded batteries because these types of batteries have a liquid electrolyte solution that covers all of the battery's internal parts.
Pros
Cons
Lead-acid RV batteries are ideal for budget-conscious RVers who don’t mind a bit of maintenance.
Regularly check and top off the electrolyte levels with distilled water and ensure the battery is kept clean and dry to prevent corrosion. Avoid discharging the battery below 50% to extend its lifespan.
Gel-cell batteries are similar to flooded lead-acid batteries, except you don't have to maintain the battery by adding distilled water because the gel replaces the electrolyte solution.
Pros
Cons
Gel-cell RV batteries are ideal for RVers who camp or store their RV in extreme temperatures and don't want to maintain their battery.
Avoid discharging your gel-cell batteries to lower than a 25% charge to maximize their lifespan and performance.
AGM batteries are a type of lead-acid battery, but they are designed differently because fiberglass mats absorb the acid, making them spill-proof and maintenance-free.
Pros
Cons
AGM RV batteries are ideal for RVers who need a reliable, maintenance-free power source that can handle rough conditions and various mounting positions.
Avoid discharging your AGM batteries to lower than a 20% charge to maximize their lifespan and performance.
Lithium-iron phosphate (LiFePO4) batteries are the newest and most advanced type of RV battery. They use lithium ions moving between electrodes to store and release energy instead of lead and acid, which makes them more efficient.
Pros
Cons
Lithium RV batteries are ideal for RVers who prioritize efficiency, long lifespan, and low maintenance and are willing to invest in the best technology available. Because of their high efficiency and deep discharge capabilities, they are particularly suitable for boondocking and off-grid adventures.
Avoid completely discharging your lithium batteries to maximize their lifespan and performance. Although lithium batteries are more resilient than other types, maintaining a charge level above 20% is recommended.
A deep-cycle battery provides a steady amount of power over a long period. It can be discharged and recharged repeatedly, making it ideal for RVs, which need consistent power for appliances and devices. Most RV batteries are deep-cycle.
When an RV battery drops below a certain charge level, it can lead to reduced efficiency and a shorter lifespan. Consistently discharging a battery below this level can damage it and cause failure. It’s important to recharge your battery before it gets too low.
RV batteries must be disposed of properly due to the hazardous materials they contain. Take your old batteries to a recycling center or a designated battery disposal site. Many auto parts stores and service centers also accept old batteries for recycling.
Yes, most RV batteries are available in both the United States and Canada. However, availability can vary by brand and model, so it’s best to check with your local retailer or supplier.
A trickle charger is a device that charges a battery at a very low, steady rate. It is designed to maintain a battery’s charge over a long period without overcharging it.
A trickle charger helps maintain an RV battery's charge when the RV is not in use. It prevents the battery from discharging completely and ensures it remains in good condition for periods of inactivity. Smart battery chargers are even better than a standard trickle charger because they maintain and charge the battery and prevent overcharging.
You should use the RV’s battery disconnect switch when storing the RV for an extended period or performing maintenance. This switch disconnects the battery from the RV’s electrical system, preventing drain and prolonging the battery's life.
RV batteries can be charged using a portable battery charger, shore power, solar panels with a solar charge controller, or a vehicle's alternator.