RV batteries are expensive, so choose your next set carefully. Here are the best RV battery types and choices.
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The Best Batteries for Your RV
Updated on Oct. 14, 2024
Batteries are essential to any RV power system, and the batteries you choose can make all the difference in your RV lifestyle. “As someone who loves nothing more than hitting the open road in my RV, I’ve learned more about picking suitable batteries over the years,” says Rinkesh Kukreja, Senior software engineer and sustainability expert. “Your RV’s battery is the heart of its electrical system, powering everything from lights and appliances to backup systems when you’re off the grid.”
The most important part of understanding RV batteries is first understanding the different types. The two main types of batteries you’ll see for RVs are lead-acid and lithium-ion. Lead-acid batteries break down further into flooded lead-acid (FLA), absorbed glass mat (AGM) and gel. All types have their pros and cons, but here are a few key features.
Flooded lead-acid batteries are the most traditional type of lead-acid battery, however, they do require regular maintenance. AGM are maintenance-free and more resistant to vibration, making them a great option for RVs. Gel batteries are also maintenance free, but are less common in RVs than AGM and FLA batteries. Lithium-ion batteries have a higher energy density, faster charging times, a longer cycle life and weigh less than lead-acid batteries, but they have a higher price tag.
Ultimately, it’s going to come down to factors such as budget, maintenance preferences, performance requirements and intended usage. “AGMs do the job without spending much money if you’re an occasional camper,” says Kukreja. “Lithium batteries give you more freedom if you live on the road. As an RV enthusiast, I love the flexibility lithium provides. I suggest having a pro install your batteries, whichever you choose—batteries can be dangerous if mishandled.”
Before looking through the different options, here are some other key components you should think about when selecting a battery for your RV.
- Battery capacity: Battery capacity, or how much energy the battery can hold, is measured in amp-hours (Ah). Determine your energy needs first and then find a battery with a large enough capacity to meet your consumption needs.
- Voltage: Typical RV batteries come in 12-volt or 6-volt configurations. Look for the voltage requirements of your RVs electrical system to find a battery that matches.
- Cost and cycle life: “AGMs are reliable and affordable, typically lasting around 3-5 years,” says Kukreja. “Lithium batteries usually last much longer, at 5-10 years.” Lithium-ion batteries will have a higher cost upfront, but depending on usage it may be worth it.
- Temperature sensitivity: Some batteries don’t do well in extreme climate conditions. Think about where you travel with your RV and make sure to choose a battery that will do well with the temperature. This information can easily be found in the product’s description.
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Best Big High-End Flooded Cell Battery
Duracell Ultra BCI Group Flooded Deep Cycle Battery
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Best Mid-Size AGM Battery
Duracell Ultra BCI Group AGM Deep Cycle Battery
The durable Duracell Ultra BCI Group AGM Deep Cycle Battery is a starting and cycling battery that can handle all the accessory demands an RV can throw at it.
Compared to traditional flooded batteries, Duracell Ultra AGM batteries offer longer cycle life, shorter charging times and more vibration resistance. These batteries feature a spill-proof design that permits installation in any orientation except upside down.
Pros
- Faster charging;
- Better vibration resistance;
- Thirty-month replacement warranty.
Cons
- Capacity tends to shrink over time;
- Sensitive to overcharging.
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Best Large Brand-Name Gel Cell Battery
Renogy Rechargeable Deep Cycle Hybrid GEL Battery
At 200 amp-hour (Ah), the Renogy Rechargeable Deep Cycle Hybrid GEL Battery is one of the larger RV batteries, made by one of the recognized leaders in solar energy and off-grid power systems. This sealed battery has an excellent track record with RVs, off-grid energy applications and marine use.
With a rated life of 750 cycles when discharged down to 50 percent capacity, you can expect 10-plus years of service from this battery. Gel cell-type batteries like this one are best at delivering relatively low current levels, but for long periods. They do require a special battery charger for full working life (speaking of, check out these rechargeable battery chargers).
Pros
- Long-lasting;
- Delivers low current for a long time;
- No liquid to spill.
Cons
- Gel battery charger required;
- Almost double the size and weight of competitors.
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Best Big High-End Flooded Cell Battery
Duracell Ultra BCI Group Flooded Deep Cycle Battery
With deep cycle batteries, you get the most storage capacity for your dollar from lead acid batteries like this Duracell Ultra BCI Group Flooded Deep Cycle Battery.
Duracell, of course, is one of the most respected names in battery technology, so you’ll get great value from this tried-and-true product. More accurately called a “flooded” lead acid design, this Duracell is like the battery in your car. Liquid acid surrounds lead plates that work together to store electricity.
Batteries like this can spill, but not easily. There are a handful of fancier battery technologies, but good old lead acid still delivers the best bang for the buck.
Pros
- Cost effective;
- Large capacity.
Cons
- Must be installed upright to prevent spills;
- Regular maintenance required.
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Best Lithium Battery
Ampere Time LiFePO4
The Ampere Time LiFePO4 Batteries use Automotive Grade LiFePO4 cells that offer higher energy density, more stable performance and increased power. The battery’s lifespan of approximately 4,000 cycles is 10 times longer than comparable lead acid batteries, at one-third of their weight.
Ampere Time LiFePO4 batteries can discharge the full 12 volts for 95 percent of their capacity, so they can run nearly 45 percent longer than lead acid batteries. An integrated battery management system (BMS) protects it from overcharging, over-discharging, over-currenting and short circuiting.
Pros
- Long-lasting;
- Weighs less;
- Battery Management System.
Cons
- Expensive;
- Shouldn’t be charged in freezing temperatures.
FAQ
Which RV battery lasts the longest?
Lithium-ion batteries typically last the longest for RVs, with a lifespan of up to 10 years or 5,000 cycles, depending on usage and maintenance. They’re more expensive upfront but provide excellent long-term value.
Should I use a deep-cycle battery in my RV?
Yes, deep-cycle batteries are ideal for RVs as they are designed to deliver consistent power over long periods and handle frequent discharging and recharging, making them perfect for powering appliances and devices.
Are AGM batteries better for an RV?
AGM (Absorbent Glass Mat) batteries are a great choice for RVs because they are maintenance-free, spill-proof, and more resistant to vibration. They perform well in cold weather but are generally more expensive than flooded lead-acid batteries.
