solar powered battery charger for RV

Best RV Solar Battery Chargers For Extended Off-Grid Stays

In an era of growing environmental consciousness and increasing interest in off-grid living, RV solar battery chargers are becoming essential for modern nomads and adventurers. RVers who want to explore remote destinations and minimize their carbon footprint are turning to solar-powered solutions to power their RVs.

Solar battery chargers harness the power of the sun to charge and maintain RV batteries, providing a sustainable and cost-effective source of energy. These innovative devices are becoming increasingly popular as RVers seek out ways to reduce their impact on the environment and enjoy the freedom of the open road without sacrificing comfort or convenience.

As technology advances, the market for RV solar battery chargers is booming, with a wide range of options available to RVers. With so many camper solar battery chargers on the market, it can be tough for you to choose the best one for your needs. That’s why we’ve put together a list of the best solar powered battery chargers for RVs on the market.

In this exploration of the best RV solar battery chargers, we delve into the key factors that make these chargers essential for the modern road-tripper. We’ll provide insights on the various types of solar chargers available as well as explore the key factors to consider when choosing an RV solar battery charger for specific needs.

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What is a Solar Battery Chargers for RV?

RV solar battery chargers are specialized devices that use solar energy to charge and maintain the batteries in recreational vehicles (RVs). They work by converting sunlight into electricity, which is then used to power the batteries. It serves as an eco-friendly and self-sufficient alternative to traditional methods of charging RV batteries, such as generators or plugging into shore power.

Comprising solar panels, a charge controller, and often an inverter, an RV solar battery charger system works by capturing sunlight through solar panels and converting it into direct current (DC) electricity. The charge controller manages the charging process by regulating the flow of electricity to prevent overcharging and ensure the batteries are charged optimally. Inverters, if included, convert the DC electricity into alternating current (AC) electricity, which can power appliances and devices within the RV.

Solar powered battery charger for RV are designed to be efficient, durable, and compact, making them suitable for the limited space available on RVs. They enable RV owners to tap into a renewable energy source, reducing their reliance on fossil fuels and external power sources while also saving on fuel costs and reducing noise pollution.

The capacity and capabilities of RV solar battery chargers can vary, with options available for different sizes and types of RVs. From small portable solar panels that can be set up temporarily to larger, more permanent installations on the roof of the RV, these chargers cater to a diverse range of needs and preferences among RV enthusiasts.

rv solar battery chargers

How Do RV Solar Battery Chargers Work?

An RV solar battery charger operates through a sophisticated process that harnesses solar energy and converts it into electricity to charge and maintain the batteries in recreational vehicles.

In short, they take advantage of the sun’s energy to provide a sustainable and renewable source of power for an RV’s electrical needs. This approach not only offers greater energy independence but also reduces environmental impact and operating costs over time.

Here’s a step-by-step breakdown of how it works:

Solar panels capture sunlight: The process begins with solar panels, also known as photovoltaic (PV) panels, mounted on the roof of the RV or in a location with optimal sun exposure. These panels are made up of individual solar cells that contain semiconductor materials. When sunlight strikes these cells, they generate an electric current through the photovoltaic effect.

Conversion of sunlight into DC electricity: The solar cells within the panels convert sunlight into direct current (DC) electricity. DC electricity consists of a continuous flow of electrons in one direction.

Routing electricity to charge controller: The generated DC electricity is then directed to a component called the charge controller. The charge controller plays a crucial role in managing the charging process. It regulates the amount of electricity flowing into the RV’s battery bank, preventing overcharging and ensuring that the batteries are charged safely and efficiently.

Battery charging: The charge controller sends the appropriate amount of DC electricity to the RV’s battery bank. The batteries store this energy for later use. As sunlight continues to strike the solar panels, the batteries continue to charge, gradually replenishing their energy levels.

Optional inverter for AC conversion: Some RV solar setups also include an inverter. If present, the inverter converts the stored DC electricity from the batteries into alternating current (AC) electricity. AC electricity is the type of electricity used to power most household appliances and devices.

Powering RV appliances: The AC electricity generated by the inverter can be used to power various appliances and devices within the RV, similar to the electricity provided by traditional shore power connections. This allows RV occupants to use lights, outlets, kitchen appliances, and other equipment using the energy stored in the batteries.

Monitoring and maintenance: Modern RV solar systems often include monitoring features that allow users to track the performance of the solar panels, the state of charge of the batteries, and the overall health of the system. Regular maintenance, such as cleaning the solar panels and ensuring all components are functioning correctly, helps optimize the system’s efficiency.

Types of Solar Battery Chargers for RV?

There are 3 main types of RV solar battery chargers available, each with its own characteristics, installation methods, and advantages.

Solar trickle chargers

Solar trickle chargers for RV are the most basic type of RV solar battery charger. They’re small, lightweight, and low-capacity solar panels designed to maintain the charge of your RV’s batteries over extended periods of inactivity. They are particularly useful when your RV is in storage or not in use for an extended period.

These RV solar trickle chargers provide a continuous low-level charge to prevent battery depletion and sulfation, a common issue in batteries left unused for long periods. Solar trickle chargers for RV battery are often portable and easy to set up. However, they are not intended to rapidly charge depleted batteries and are best suited for maintenance purposes.

Portable solar panel kits

Portable solar panel kits are a more powerful option than solar trickle chargers. Portable solar panel kits consist of foldable or compact solar panels that can be set up outside your RV to capture sunlight efficiently. These kits usually include solar panels, a charge controller, cables, and sometimes a storage bag. They offer a versatile solution for RVers who want the flexibility to position the panels for optimal sun exposure.

Portable RV solar battery charger kits come in various power outputs, allowing you to choose a size that matches your energy needs. They are ideal for those who prefer not to install permanent solar panels on their RV roofs or want the option to move the panels to avoid shading.

Full RV solar systems

Full RV solar systems are comprehensive setups that include roof-mounted solar panels, charge controllers, inverters (if desired), and the necessary wiring and components. These systems are designed to provide a substantial amount of power to meet the energy demands of the entire RV. Roof-mounted solar panels are permanently affixed to the RV’s roof, allowing for maximum sun exposure while driving or parked.

Full RV solar systems are capable of charging and maintaining the RV’s batteries, powering appliances, lights, and other electrical devices. They offer a high degree of energy independence and are suitable for RVers who frequently boondock or spend extended periods off-grid.

FactorSolar Trickle ChargersPortable Solar Panel KitsFull RV Solar Systems
Power OutputLowMediumHigh
Suitable forOnly for RV battery chargingRVs of all sizesLarge RVs, off-grid living

Why Solar Battery Chargers Are Essential for RVers?

RV solar battery chargers offer a plethora of benefits for both the environment-conscious traveler and the avid adventurer seeking greater independence on the road. Here are some of the key advantages:

Clean and Renewable Energy: One of the most significant benefits of RV solar battery chargers is their utilization of clean and renewable energy from the sun. Solar power produces no emissions or pollutants during operation, contributing to a reduced carbon footprint and a healthier environment. By using solar energy to power your RV, you contribute to reducing the demand for fossil fuels and lowering greenhouse gas emissions. This environmentally conscious choice aligns with a growing global effort to combat climate change.

Cost Savings: While the initial investment for installing RV solar panels and battery chargers can be relatively high, they lead to long-term cost savings. Once installed, solar panels generate electricity for free, decreasing reliance on expensive fuels and traditional power sources. This can lead to significant savings on fuel and campground electricity fees over time.

Energy Independence: Solar powered battery chargers for RV provide the freedom to travel to remote locations without worrying about the availability of power sources. This is especially valuable for boondocking or dry camping, where conventional power outlets are scarce or nonexistent. Solar power allows you to enjoy off-grid experiences without sacrificing modern conveniences.

Reduced Noise and Pollution: Unlike generators that produce noise and emissions, solar panels operate silently and without pollution. This contributes to a more peaceful and serene camping experience while respecting the tranquility of natural surroundings and fellow campers.

Low Maintenance: Solar panels have minimal moving parts and require little maintenance. Regular cleaning to remove dirt and debris is usually sufficient to keep them operating efficiently. This reduces the need for frequent maintenance and servicing.

Extended Battery Life: Properly managed RV solar systems often include charge controllers, which prevent overcharging and extend the lifespan of the RV’s batteries. This means fewer battery replacements and reduced waste over time.

Emergency Backup: In case of unexpected power outages or emergencies, an RV with a solar system can serve as a reliable backup power source, ensuring essential devices and appliances remain functional.

Best RV Solar Battery Chargers: In-Depth Reviews

Topsolar 20W Solar Battery Charger

Topsolar Solar Panel Kit 20W 12V Monocrystalline

At a glance:

Solar Cell TypePolycrystalline
Maximum Power20W
Maximum System Voltage1000V DC
Optimum Operating Voltage (Vmp)18V
Optimum Operating Current (Imp)1.11A
Connector TypeUSB
Weight4.8 pounds
Dimensions18.9 x 13.4 x 0.7 inch
Warranty1 Year

Why we love it:

The Topsolar 20W is a powerful and versatile solar battery charger that is perfect for off-grid power applications. It is designed to maintain 12 volt batteries in cars, RVs, and other vehicles, and it can also be used to power a variety of DC appliances.

One of the standout features of this kit is its 10A solar charger controller. This controller adds a layer of intelligence to the charging process, preventing the battery from overcharging, over-voltage, discharge, and short-circuit mishaps. It also has reversed polarity protection, which ensures that the battery is always safe from damage.

This Topsolar 20W solar battery charger also impresses me with its ability to efficiently harness the sun’s energy. The panels are designed to be tilted towards the sun, which can boost solar panel efficiency by up to 25% compared to laying them flat. This intelligent design ensures that you extract maximum power from the available sunlight, optimizing your charging capabilities.

The panels themselves are a testament to advanced technology and durability. Encased in multi-layered sheet laminations, they boast exceptional cell performance and a prolonged service life. With a robust tempered glass front and corrosion-resistant aluminum frame, these panels are built to withstand the test of time, even in outdoor environments. In fact, the combination of advanced materials and thoughtful construction means that these panels can potentially provide reliable service for decades.

In addition to their performance, the Topsolar Solar Panel Kit is designed for ease and convenience. The panels are compact and lightweight, making them easy to carry and transport. They also have pre-drilled holes on the back, making them quick and easy to mount using DIY brackets. This makes them a perfect companion for camping trips and outdoor activities.

SOLPERK 20W 12V Solar Battery Trickle Charger

SOLPERK Solar Panel Kit 20W 12V, Solar Battery Trickle Charger Maintainer

At a glance:

Solar Cell TypeMono Crystalline
Maximum Power20W
Maximum Power Voltage18V
Maximum Power Current1.11A
Open Circuit Voltage21.6V
MaterialAluminum, Monocrystalline Silicon
Charge Controller8A controller
Dimensions15 x 13.2 x 0.7 inches
Weight3 pounds
Mounting Stand360° adjustable
Warranty1 Year

Why we love it:

If you are looking for a powerful, durable, and easy-to-use solar charger for your 12V rechargeable batteries, the SOLPERK 20W 12V Solar Battery Trickle Charger is a great option. It is the perfect solution for keeping your batteries charged and ready to use, no matter where you are.

The solar panel’s monocrystalline A+ solar cells are the driving force behind its remarkable performance. With an impressive cell efficiency ranging from 21% to 30%, this solar panel is highly efficient at generating power from the sun’s rays. This efficiency translates to effective charging and maintenance of 12V batteries, ensuring they stay ready to use whenever needed.

The SOLPERK 20W 12V Solar Battery Trickle Charger is equipped with an upgraded 8A controller that enhances its capabilities even further. The controller boasts charging efficiency that surpasses other controllers on the market, with a 20% to 30% higher efficiency. This ensures optimal energy conversion and maximizes the power harnessed from the sun. The controller also has an intelligent three-stage charging design that safeguards batteries from overcharging, over-voltage, and short circuits. This ensures the longevity of your batteries. Notably, the controller’s operation doesn’t siphon power from the battery, contributing to efficient energy management.

The solar panel is also built to last. It is encased in a durable aluminum frame and tempered glass, making it resistant to damage from the elements. It can withstand pressures as high as 2400Pa wind and 5400Pa snow load, making it perfect for use in even the harshest conditions.

The 360-degree angle adjustable mounting bracket is a valuable asset for anyone who wants to get the most out of their solar charger. It also ensures that your solar panels are always facing the sun, maximizing their efficiency.

ECO-WORTHY 10W Solar Panel Kit 12V Solar Battery Charger

ECO-WORTHY 10W Solar Panel Kit 12V Solar Battery Charger for RV

At a glance:

Connector TypeUSB
Maximum Power10W
Maximum Voltage (Vmp)18V
Open Circuit Voltage (Voc)22.41 V
Short Circuit Current0.61A
Maximum Current0.56A
Product Dimensions13.19 x 8.46 x 1.18 inches
Weight1.67 pounds
Warranty1 Year

Why we love it:

The ECO-WORTHY 10W Solar Battery Charger is a smart and durable solution for trickle charging batteries. It uses the power of the sun to keep your batteries charged and ready to use, even during storage or standby periods.

The charger’s trickle charging method prevents battery loss during idle periods, which can extend the life of your batteries. The charger is also made with durable materials, such as low-iron tempered glass and corrosion-resistant aluminum, which makes it resistant to weathering and wear. This ensures that the charger will last for many years of outdoor use.

The charger’s heart is its high-efficiency monocrystalline silicon, which can generate up to 40Wh of electricity per day under sunny conditions. This potent power generation potential gives you the power to fuel your devices and appliances, no matter where your adventures take you.

The ECO-WORTHY 10W Solar Battery Charger includes a 10A charge controller that protects your batteries from a variety of dangers, including overcharging, over-discharging, over-voltage, short circuits, and reverse current. This controller is a vigilant guardian for your batteries, helping to extend their lifespan.

The charge controller also has two indicators that provide real-time insights into the charging and discharging status of your batteries. This makes it easy to monitor your power supply at a glance.

In addition to its protective features, the charge controller also offers a USB 5V/2A output port. This port allows you to connect devices like USB fans, which can enhance your comfort during outdoor activities.

The ECO-WORTHY 10W Solar Battery Charger takes multitasking to a new level by empowering you to simultaneously offer power to a DC load and charge your phone. This makes it a versatile and useful tool for any outdoor adventure.

SUNER POWER 12V Solar Battery Trickle Charger & Maintainer

SUNER POWER 12V Solar Car Battery Charger & Maintainer, 12W Waterproof Solar Trickle Charger

At a glance:

MaterialCrystalline silicon + Solar energy glass
Maximum Power12W
Dimensions13.2 x 10.3 x 0.51 inches
Weight4.89 pounds
Warranty1 Year

Why we love it:

The SUNER POWER 12V solar trickle charger is a great choice for anyone who wants to keep their 12V batteries in good condition. It is perfect for use in all seasons and can be used to maintain batteries in a variety of applications, including cars, RVs, boats, and more.

The solar powered battery charger converts sunlight into 12 volt DC electricity, which is then transported to your batteries. This trickle charging method helps to prevent battery drain and extend the life of your batteries.

Moreover, this RV solar trickle charger is also designed to prevent overcharging and reverse discharge, which can damage your batteries. The built-in blocking diode ensures that your batteries will not drain even when the charger is not in use.

This SUNER POWER charger is a rugged and durable charger that is built to withstand the harshest conditions. It is made with high-quality materials, including 30% high-conversion efficiency crystalline silicon material and high-strength solar energy glass. This combination of materials ensures that the charger is both efficient and durable.

The charger also features a waterproof design that protects it from the elements. This makes it the perfect charger for use in any climate, even in the rain or snow.

Sunway Solar 8W Battery Trickle Charger & Maintainer for RV

Sunway Solar Battery Trickle Charger & Maintainer 12Volt 8W

At a glance:

Brand‎Sunway Solar
Solar Cell TypeMono Crystalline
Maximum Power8W
Dimensions0.6 x 14.9 x 8.3 inches
Weight‎2.66 pounds
Warranty1 Year

Why we love it:

The last charger we would like to recommend today is the Sunway Solar 8W charger, a versatile and durable solar charger for RV that can be used to trickle charge batteries in a variety of applications.

One of the best things about the RV solar battery charger is its easy and flexible installation. The suction cups included with the RV solar battery charger make it easy to mount the charger to the windshield or dash of your RV. The suction cups are also strong enough to hold the charger securely in place.

Coming equipped with a cigarette lighter plug, you can connect this battery charger to your RV’s 12 volt power system with ease. This is a great option if you want to be able to charge your batteries while you’re driving. The long cable gives you plenty of flexibility to position the charger where it gets the most sunlight. Alternatively, you can connect the charger to the battery using the crocodile clips provided. This gives you a variety of installation options to choose from, depending on your needs and preferences.

The Sunway trickle charger is covered with ultra clear PV glass, which makes it more efficient. It also has a durable ABS plastic housing that makes it more resistant to damage. Similar to the Sun Power charger, this solar battery charger also possesses a built-in diode that prevents reverse charging from batteries. It also has a 12volt LED charge indicator that lights up when the charger is working.

How to Choose the Right RV Solar Battery Charger


Efficiency is key when choosing an RV solar battery charger. Solar panel efficiency is measured as a percentage and indicates how well it converts sunlight into electricity. A higher efficiency panel will generate more electricity from the same amount of sunlight, which is important for RVers who want to maximize their battery charging capabilities.

Monocrystalline solar panels are typically the most efficient type of panel available. This is because they are made from a single crystal of silicon, which allows for a more uniform and efficient solar cell. Monocrystalline panels are also more durable than other types of panels, making them a good choice for RVers who want a long-lasting charger.

Polycrystalline solar panels are less efficient than monocrystalline panels, but they are also less expensive. They are made from multiple silicon crystals, which results in a less uniform solar cell. Polycrystalline panels are still a good option for RVers who are looking for an affordable charger.


The capacity of an RV solar battery charger is the amount of energy it can store. This is measured in watt-hours (Wh). The capacity of a solar battery charger will determine how long it can power your RV’s appliances and devices.

The capacity of an RV solar battery charger will depend on a few factors, including:

  • The size of the solar panels: The larger the solar panels, the more energy they can collect, and the more capacity the charger will have.
  • The efficiency of the solar panels: More efficient solar panels can collect more energy from the sun, which will also increase the capacity of the charger.
  • The type of battery: Different types of batteries have different capacities. For example, lead-acid batteries have a lower capacity than lithium-ion batteries.
  • The number of batteries: The more batteries you have, the more capacity the charger need to have.
Charger TypeCapacity (Wh)
Basic solar trickle charger10-100 Wh
Portable solar panel kit100-500 Wh
Full RV solar system1,000-10,000 Wh

RV Battery’s Capacity

When choosing a solar charger for your RV battery, it is important to consider the battery’s capacity.

The capacity of an RV battery is measured in amp-hours (Ah). This is the amount of current the battery can deliver for 20 hours at a usable voltage (10.5 volts or higher). To calculate the minimum wattage of a solar battery charger you need, divide the battery’s amp-hour rating by 20. For example, if your battery has a capacity of 100 Ah, you will need a solar charger with a minimum wattage of 100 Ah / 20 hours = 5 amps.

However, this is just the minimum wattage you need. To ensure that your battery charges quickly and efficiently, it is best to get a solar charger with a wattage that is at least double the battery’s amp-hour rating. For example, if your battery has a capacity of 100 Ah, you should get a solar charger with a minimum wattage of 100 Ah * 2 = 200 watts.

RV Battery Type

The best solar powered charger for your RV also depends on the type of battery you have. Lead acid batteries and lithium batteries have different charging requirements, so you’ll need to choose a charger that is compatible with your battery type.

  • Lead acid batteries should not be deeply discharged, as this can shorten their lifespan. It is important to charge lead acid batteries daily to prevent premature death. If your RV has lead acid batteries, you will need a large solar system to ensure that they are fully charged in a reasonable amount of time. In most cases, RVers who boondock often will pair their solar charger with a generator as a backup.
  • Lithium batteries are more expensive than lead acid batteries, but they have a longer lifespan and can withstand deeper discharges without being damaged. Lithium batteries do not need to be charged as often as lead acid batteries, so you may be able to get away with a smaller solar system. In some cases, you may not even need a generator as a backup.
solar powered battery charger for RV


The cost of an RV solar battery charger can vary widely based on several factors, including the type of system, the capacity of the panels.

Solar trickle chargers

Basic solar trickle chargers are a great option for RVers who want to keep their batteries topped up without breaking the bank. They are typically very affordable, starting at just $20 to $50. However, they also tend to be less powerful, making them suitable for smaller RVs or batteries.

If you have a larger RV or need more power, you may want to consider a higher capacity solar trickle charger. These models typically range in price from $50 to $150 and provide slightly more wattage. They are suitable for larger RVs, boats, or other vehicles with bigger batteries.

Portable solar panel kits

Portable solar panel kits are a great option for RVers who want a more powerful and versatile way to charge their batteries. They typically range in price from $100 to $800, depending on the size and wattage of the panels, as well as the features included.

Entry-level portable kits with lower capacity panels can start at around $100 to $300. These kits are a good option for RVers who want to be able to charge their batteries while boondocking or camping in remote areas. However, they may not be powerful enough to charge larger RVs or batteries.

More powerful and versatile kits with higher wattage panels might range from $300 to $800 or more. These kits are a good option for RVers who want to be able to charge their batteries quickly and efficiently, even in overcast weather. They also typically come with additional features, such as built-in battery chargers and USB ports.

Full RV solar systems

A full-scale RV solar system can cost anywhere from $2,000 to $10,000 or more, depending on the size and quality of its components. The system typically includes multiple roof-mounted solar panels, a charge controller, a battery bank, and possibly an inverter.

Premium systems with higher capacities and advanced features will be on the higher end of this range. For instance, a system with 500 watts of solar panels, a 2,000 amp-hour battery bank, and a 2,000 watt inverter could cost around $5,000. A system with 1,000 watts of solar panels, a 4,000 amp-hour battery bank, and a 4,000 watt inverter could cost around $10,000.

Weight & Size

Solar chargers can range in weight from a few pounds to several hundred pounds, and in size from small, portable units to large, roof-mounted units. Depending on your camping setup, you should choose the solar charger with suitable size and weight.

  • If you have a small RV or limited space, you will need to choose a lightweight and compact charger. This will make it easier to transport the charger and store it in your RV.
  • If you plan on boondocking or camping in remote areas, you will need a portable charger that is easy to set up. This will allow you to quickly and easily get your batteries charged up when you are in the middle of nowhere.
  • If you have a large RV or need to power a lot of appliances and devices, you will need a more powerful charger that is larger and heavier. This will ensure that your batteries are able to keep up with the demand for power.

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