How to Keep Your RV Battery Charged? 4 Options

When it comes to RVing, one of the most important considerations is your battery. An RV battery is essential to the vehicle’s electrical system, providing the power needed to start the engine and all appliances and accessories. 

If you don’t want your travel plans ruined, it’s vital to ensure your RV is in good working order and that you have a fully charged battery. Here we review four options to keep your RV battery charged and ready to go. 

RV Battery Basics

Knowing your RV’s battery basics is equally important as knowing how to charge them. There are three types of RV batteries: lead acid, absorbed glass mat (AGM), and lithium-ion. 

Lead Acid Batteries

Lead acid batteries, also known as wet cell batteries, are the most common type used in RVs. They’re reliable and cheap to produce, meaning more savings for the consumer.

However, they do have some drawbacks. They’re heavy and require regular maintenance because they have removable caps that allow users to inspect their electrolyte levels. They also need more frequent charging than AGM or lithium-ion batteries because they discharge more quickly under load than their counterparts.

AGM Batteries 

AGM batteries are an improved version of lead acid batteries that aren’t affected by temperature extremes as much as traditional options. These can be good for cold climates or high altitudes where other types might not perform well enough over time due to a lack of proper ventilation or heat dissipation during charging cycles. 

They have no liquid electrolytes. Instead, an absorbent glass mat surrounds the electrodes to contain their electrolyte material. The glass makes them more resistant to leaks and damage than lead-acid batteries. 

However, they aren’t fail-safe. AGM batteries can become damaged by overcharging or undercharging.

Lithium Batteries

Lithium-ion technology offers several advantages over older technologies like lead-acid batteries. 

First, it’s lighter weight than most other options on today’s market. It also lasts longer without needing recharges between uses. Fewer recharges mean less chance of having something go wrong with them while you’re travelling around. 

The different types of batteries play a part in charging options, which we’ll cover next. 

white and gray propane gas tanks on RV trailer

Gas Generators

Fossil fuel generators are the most common option for charging your RV battery because they can be relatively inexpensive and easily accessible. However, there are quite a few limitations that you should know.

The most significant disadvantage of using a gas generator is the noise. Many RV parks and campgrounds enforce regulations surrounding their use during certain times. Mufflers can reduce the noise level, but that will increase fuel consumption and cost more money to operate.

To reduce the costs of operating a gas generator, you should always use a load controller. This device will ensure that only the necessary appliances are running at any one time and that they aren’t running unnecessarily.

Another disadvantage of gas generators is that they require some maintenance from time to time. Maintenance is critical, especially if you want them to run smoothly for many years without any problems. 

Gas generators also produce unpleasant toxic fumes and greenhouse gases that are harmful to your family and the environment.

The fuel consumption of gas generators can also become costly over time. With rising fuel costs worldwide, their reliance on fossil fuels might limit where and how long you can take out your RV affordably.

Solar Power Kits

EcoFlow Power Kits

The ability to run your vehicle off of solar power is an excellent option for many RV owners and an efficient way to charge your RV battery. A solar power kit will allow you to charge your battery while travelling or parked at home.

A solar power kit consists of several components that work together to generate and store electricity. Solar panels absorb the sun’s light, which an inverter converts into electrical current and stores in the battery. The batteries are what you plug into to power appliances and electronics in your RV. 

These kits are compact and easy to install, making them a convenient option for anyone looking for an off-grid solution

The biggest drawback of using solar power kits is that they may not be able to charge your battery quickly enough if it’s completely drained or if there isn’t enough sunlight available during the day. But, with a bit of preparation, these convenient kits are a great way to begin charging your batteries with a renewable energy source instead of gas or electricity from the campground. 

Solar Generators 

Solar generators are becoming more popular as they offer many benefits over their traditional counterparts. A solar generator is a portable device that converts sunlight into electricity for charging batteries.

These devices come with solar panels to generate electricity and a portable power station to store it. Some models have an expandable capacity, providing enough energy to run larger Class A or Fifth-Wheel RVs.

Solar generators produce clean energy and don’t create pollution or carbon emissions during operation. They also run quietly and don’t require maintenance as gas-powered generators do. Since they don’t need fuel to charge your battery, you can use them anywhere there’s sunlight — including indoors or on cloudy days!

Like all batteries, solar generators must be stored in a cool place between uses so they won’t overheat and damage their internal components. They also require more time to recharge than conventional charging methods. All of the EcoFlow solar generators offer a variety of charging methods. If you’re staying in a campground that provides an electrical hookup, you can fully charge your EcoFlow solar generator using AC power in less than two hours.

Another way to offset this issue without spending money on a second generator is to get smart extra batteries. These expand double the run time when you need more power than what one battery can provide.

Wind Turbines

Free White Windmill Stock Photo

Wind turbines are not common but are an available option for some people that live in an area with consistent wind. 

They aren’t safe to use while driving. They require being stationary. Still, a small wind turbine could benefit people who tend to stay in one place for long periods or move slowly through the countryside. People who want to go off-grid could also benefit from having a wind turbine as a backup energy source in case of power outages and storms.

Frequently Asked Questions

How Does a Battery Stay Charged on an RV?

A battery is like a little power plant. To maintain a charge, you need to have a constant power source. RVs take energy from the alternator and store it in its chemical makeup until you need it. When you turn on your lights or start your engine, the battery sends power out to those devices. If you stop using electricity, the battery slowly drains until it’s empty.
The RV alternator charges the battery when it’s running, but there are other ways to charge it. Solar panels can charge it while you drive through sunny climates or if you park at an RV campground with a hookup where they provide shore power.

How Do I Make Sure My RV Battery Stays Charged When Not in Use?

The most effective way to maintain the charge in your battery when it’s in storage or not in use is to disconnect it. 
Even with everything off, batteries continue to draw electricity, so ensuring that it’s fully disconnected can make sure you’re not disappointed when you’re ready to take your RV back out on the road!

Getting the Most Out of Your RV Battery

In most RVs, there’s only one battery, which means you can’t afford to let it go dead when you’re away from home. If you’ve ever been stranded in the middle of nowhere because your battery died, you know just how important it is to keep it charged. 

With a little bit of planning and one of the methods we mentioned, you can ensure you’re never stuck out on the road with a dead battery again. Switch to solar power and shop EcoFlow to power your RV lifestyle!

EcoFlow is a portable power and renewable energy solutions company. Since its founding in 2017, EcoFlow has provided peace-of-mind power to customers in over 85 markets through its DELTA and RIVER product lines of portable power stations and eco-friendly accessories.


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