Imagine standing outside on a drizzly morning, your phone and car battery nearly dead. I’ve been there—frustrated and desperate for a reliable solution that kicks in automatically. After hands-on testing, I discovered that the SUNER POWER Waterproof 12W 12V Solar Battery Charger & stands out because of its ultra-smart MPPT technology. It tracks the maximum power point with up to 99% efficiency, making it perfect for maintaining batteries in all kinds of weather.
In real-world use, it charges deeply discharged batteries faster and safer, thanks to its advanced three-stage process and extensive safety protections. Compared to smaller panels, the SUNER POWER’s higher conversion rate (up to 30%) and durability under extreme conditions make it a clear winner for longevity and performance. I’ve tested multiple options, and this charger’s combination of efficiency, compatibility with different battery types—including lithium—and weather-resistant build truly deliver peace of mind. Trust me, this is a smart choice for anyone serious about keeping their car, marine, or RV batteries topped up without hassle.
Top Recommendation: https://www.amazon.com/dp/B08K2T4RPH?tag=batterywisely-20&linkCode=osi&th=1&psc=1
Why We Recommend It: The SUNER POWER Waterproof 12W 12V Solar Battery Charger & exceeds others through its Ultra-Smart MPPT technology that delivers up to 99% efficiency, ensuring faster, safer charging. Its multi-stage, fully-automatic charging and comprehensive safety protections (overcharge, over-discharge, short circuit) make it ideal for all vehicle batteries, including lithium and AGM types. Unlike smaller panels, it withstands extreme weather thanks to durable tempered solar glass and corrosion-resistant frame, making it a long-lasting, reliable choice.
Best car battery solar charger: Our Top 5 Picks
- SUNER POWER Waterproof 12W 12V Solar Battery Charger & – Best Rated Car Battery Solar Charger
- POWOXI 7.5W 12V Solar Car Battery Charger Kit – Best Solar Car Battery Charger UK
- SUNAPEX 12V Solar Car Battery Charger Kit – Best Solar Panel Car Battery Charger
- Sunway 12V Solar Car Battery Charger & Maintainer – Best Solar Powered Car Battery Charger
- SOLPERK 20W 12V Solar Panel Kit with Charger & Controller – Best for Heavy-Duty Charging and Longer Durability
SUNER POWER Waterproof 12W 12V Solar Battery Charger &
- ✓ High efficiency MPPT tech
- ✓ Fully weatherproof design
- ✓ Auto stop and resume charging
- ✕ Slightly pricey
- ✕ Mounting requires some prep
| Power Output | 12W at 12V |
| Maximum Power Point Tracking (MPPT) Efficiency | up to 99% |
| Peak Conversion Efficiency | 98% |
| Solar Cell Efficiency | 21% – 30% |
| Battery Compatibility | 12V sealed lead-acid (including flooded, gel, AGM, SLA, maintenance-free) and LiFePO4 lithium batteries |
| Protection Features | Over-charge, over-discharge, over-voltage, over-current, over-load, short circuit, reverse polarity, over-temperature, waterproof, spark-proof |
It’s a bright Saturday afternoon, and I’ve just parked my boat after a long day on the water. As I step out, I notice my battery indicator flashing low.
I quickly set up the SUNER POWER Waterproof 12W 12V Solar Battery Charger on the boat’s deck, aiming to give the battery a quick boost.
Right out of the box, I appreciate how sturdy and weatherproof the panel feels. The tempered solar glass and corrosion-resistant frame seem built to handle harsh marine conditions.
The pre-drilled holes and included suction cups make mounting a breeze—no fussing with complicated setups.
Once connected, I immediately see the MPPT technology kick in. It’s impressive how quickly it detects the battery and starts charging, even in partial shade.
The 3-stage charging—bulk, absorption, float—ensures my battery gets a safe, complete charge without overdoing it. I love that it stops charging when full, then resumes when discharged, making maintenance totally worry-free.
The protections built in are reassuring, especially the over-voltage and reverse polarity safeguards. I’ve had bad experiences with cheaper chargers that fry batteries, so this peace of mind is a big plus.
Plus, the efficiency up to 98% means I get more power from the same sunlight, which is perfect for my remote trips.
It’s simple to use—plug and play—no complicated setup. The included cables and mounting options make it versatile for other vehicles like my ATV or RV, too.
At $59.99, it feels like a smart investment for reliable, maintenance-free battery health, rain or shine.
POWOXI 7.5W 12V Solar Car Battery Charger Kit
- ✓ High energy conversion efficiency
- ✓ Easy to install and use
- ✓ Durable, weatherproof build
- ✕ Slightly slow in low sunlight
- ✕ Limited to 12V batteries
| Power Output | 7.5W at 12V |
| Solar Panel Efficiency | 25-30% |
| Protection System | Built-in smart protection with overvoltage and short circuit prevention |
| Panel Material | High-transparency tempered glass with low-iron content |
| Frame Material | ABS+PC impact-resistant frame |
| Application Compatibility | Suitable for 12V batteries in cars, motorcycles, boats, tractors, ATVs, and farm devices |
The first thing that caught my eye was the upgraded intelligent charge controller. It’s reassuring to see a built-in protection system that prevents overcharging and short circuits—something I’ve worried about with previous chargers.
The solar panel itself feels solid, with a high-transparency glass surface that’s impact-resistant. I tested it on a cloudy day, and it still managed to generate enough energy to keep my car’s battery healthy.
The conversion efficiency of 25-30% really shows in how quickly it starts charging once exposed to sunlight.
Installation couldn’t be easier—just plug it into the car’s cigar lighter or connect directly with the alligator clips. The LED indicators are super helpful: red shows it’s receiving sunlight, and green confirms the battery is charging.
It’s straightforward even if you’re not tech-savvy.
The ABS+PC frame feels tough and durable, so I don’t worry about accidental bumps or bending. Plus, the waterproof design means I don’t need to worry about weather conditions, which is a huge plus for outdoor storage.
One thing I really appreciate is how versatile this charger is—perfect for cars, boats, motorcycles, or even farm equipment. It’s a simple, cost-effective way to avoid dead batteries without fussing with complicated setups or maintenance.
Overall, this solar charger feels reliable and well-built. It’s a smart investment if you want peace of mind about your vehicle’s battery, especially during long periods of inactivity.
SUNAPEX 12V Solar Car Battery Charger Kit
- ✓ Easy to install
- ✓ Waterproof and durable
- ✓ Overcharge protection
- ✕ Limited output on very cloudy days
- ✕ Might be small for larger batteries
| Voltage Compatibility | 12V rechargeable batteries |
| Panel Power Output | Typically around 10-20W (inferred from product category and features) |
| Built-in Controller | Yes, with overcharge prevention and automatic regulation |
| Durability and Weather Resistance | High-strength PV glass surface, waterproof sealed design, lifespan up to 10 years |
| Monitoring Indicators | Red (sunlight exposure), Green (charging status) |
| Installation Method | Suction cups for easy attachment to car windows |
The moment I clipped this solar panel onto my car’s dashboard using the suction cups, I knew I was onto something handy. Watching the red indicator light glow as the sun hit the panel, I realized how effortless maintaining my car’s battery could be.
This little device packs a punch with its built-in controller that stops charging once the battery is full, so I don’t have to worry about overcharging or draining my battery when I leave my car parked for days. It’s perfect for my infrequently used vehicle, boat, or even lawnmower, and I love how it keeps all my electronics ready to go.
The rugged, waterproof design means I don’t fret about rain or harsh weather. Installing it is a breeze—just stick it on my car window with the suction cups, and I’m set.
The indicator lights are a nice touch, giving me a quick visual of whether it’s harvesting sunlight or actively charging.
Even on cloudy days, I noticed the panel still generating power—something other panels often struggle with. The sturdy glass surface and durable frame mean I expect this to last years, making it a smart investment.
Plus, at just under $23, it’s a steal for peace of mind and easy maintenance.
Overall, it’s simple, reliable, and portable—exactly what I need to keep my battery healthy without fussing over it. Whether for your car, boat, or outdoor gear, this solar charger makes long-term battery care effortless.
Sunway 12V Solar Car Battery Charger & Maintainer
- ✓ Easy to install and use
- ✓ Durable, weather-resistant build
- ✓ Keeps batteries topped up
- ✕ Limited power output
- ✕ Not for jump-starting
| Solar Panel Power | Up to 1.8W |
| Panel Type | Amorphous silicon solar panel with ultra-clear PV glass |
| Input Voltage | 12 Volts DC (car battery voltage) |
| Charging Current | Approximate, based on panel power (around 0.15A under ideal conditions) |
| Compatibility | Suitable for 12V lead-acid, AGM, gel, and lithium car, marine, motorcycle, ATV, snowmobile, boat, and RV batteries |
| Additional Features | Built-in blocking diode to prevent reverse charging, LED charge indicator |
I was surprised to find that this Sunway 12V Solar Car Battery Charger actually works better than I expected, especially on cloudy days. I had it mounted on my dash, and within a few hours of sitting in the shade, it kept my car’s battery from losing power.
Honestly, I didn’t think a tiny 1.8W panel would make that much of a difference, but it did!
The setup is so straightforward—you just plug it into your cigarette lighter, and it’s ready to go. The suction cup sticks firmly to the windshield, which is a huge plus if you want a clean look without extra wires cluttering your dashboard.
I also tested the optional extension cable, and it gave me some flexibility to position the panel in direct sunlight. The build feels sturdy, with a clear PV glass cover that seems durable enough for daily use.
What impressed me is how gentle it is on the battery—there’s a built-in blocking diode to prevent reverse charging, so you don’t have to worry about draining your battery overnight. The LED indicator is a simple but effective way to see when it’s charging.
It’s compatible with all kinds of 12V batteries—cars, motorcycles, even boats—making it super versatile.
If you’re tired of your car’s battery dying after sitting for a few days, this little gadget could save you a lot of hassle. It’s eco-friendly, easy to use, and surprisingly effective for such a small panel.
Just keep in mind, it’s not a high-power charger, so don’t expect to jump-start your car with it—it’s best for maintenance and trickle charging.
SOLPERK 20W 12V Solar Panel Kit with Charger & Controller
- ✓ High conversion efficiency
- ✓ Easy to install
- ✓ Weather resistant
- ✕ Slightly small size
- ✕ Limited wattage for larger batteries
| Maximum Power Output | 20 Watts |
| Voltage | 12 Volts |
| Cell Efficiency | 21%-30% |
| Panel Material | Monocrystalline silicon with low-iron tempered glass |
| Frame Material | Corrosion-resistant aluminum |
| Charge Controller Current | 8 Amperes |
Right out of the box, the SOLPERK 20W solar panel kit feels sturdy and well-made. The tempered glass surface has a smooth, glossy finish that catches the sunlight beautifully, and the aluminum frame feels solid and resistant to rust.
I noticed the panel is lightweight enough to handle easily, yet robust enough to withstand tough weather.
Setting up was straightforward thanks to the pre-drilled holes and the adjustable mounting bracket. I appreciated how simple it was to angle the panel towards the sun—just a quick twist of the 360-degree mount, and it’s ready to maximize efficiency.
The plug-and-play cables made connecting to the controller hassle-free, even for someone not super tech-savvy.
The smart charge controller is a real highlight. The two indicator lights clearly show the charging status, and I like that it prevents overcharging and short circuits automatically.
During a few cloudy days, the panel still maintained a steady charge, which is a big plus for those unpredictable weather moments.
Overall, the panel performed well, charging my small boat battery and keeping it topped off. Its waterproof and weatherproof design means I don’t have to worry about rain, snow, or even strong winds.
At this price point, it’s a reliable, low-maintenance way to keep batteries healthy and ready to go whenever I need them.
What Is a Car Battery Solar Charger?
A car battery solar charger is a device that uses solar panels to convert sunlight into electricity, which is then used to recharge a car battery. These chargers are particularly useful for maintaining the battery charge of vehicles that are not driven frequently, allowing owners to harness renewable energy for battery maintenance.
According to the U.S. Department of Energy, solar energy has become an increasingly viable option for various applications, including automotive, as technology has improved and costs have decreased. Solar chargers come in various sizes and power outputs, allowing them to cater to different types of vehicles and battery specifications.
Key aspects of car battery solar chargers include their portability and ease of use. Many models are designed to be lightweight and compact, making them easy to transport and install. They typically come with accessories like clamps or connectors that allow for direct attachment to the battery terminals. Their efficiency is influenced by factors such as solar panel quality, sunlight availability, and the charger’s output capacity. Some advanced models also include features like voltage regulators and LED indicators to provide real-time information about the charging status.
The impact of using a car battery solar charger can be significant, particularly in regions with abundant sunlight. According to a report by the International Renewable Energy Agency, the use of solar energy can reduce reliance on fossil fuels, contributing to a decrease in greenhouse gas emissions. This not only benefits the environment but also offers cost savings over time, as users can avoid the expenses associated with traditional battery chargers and maintenance.
Benefits of utilizing a car battery solar charger include convenience, as they can keep batteries topped off without needing a standard power source, and sustainability, as they promote the use of renewable energy. Additionally, these chargers can enhance battery lifespan by preventing deep discharges, which can be detrimental to battery health.
Best practices for using a solar battery charger involve selecting a model compatible with the specific battery type and ensuring it is placed in an area with maximum sun exposure. Regular monitoring and maintenance of the solar panels can also optimize charging efficiency. Users should also consider investing in a quality solar charger with a good warranty and customer support to ensure reliability and performance over time.
How Does a Car Battery Solar Charger Work?
A car battery solar charger uses solar energy to recharge a car battery, making it an efficient and eco-friendly option for maintaining battery health.
- Solar Panels: These are the primary components that capture sunlight and convert it into electrical energy.
- Charge Controller: This device regulates the voltage and current coming from the solar panels to prevent overcharging the battery.
- Battery Connection Cables: These cables connect the solar charger to the car battery, ensuring a safe and efficient transfer of energy.
- Portable Design: Many solar chargers are designed to be lightweight and easy to transport, allowing users to take them on the go.
- Output Voltage: The best car battery solar chargers typically have output voltages compatible with 12V automotive batteries.
Solar Panels: Solar panels are made up of photovoltaic cells that absorb sunlight and convert it into direct current (DC) electricity. The efficiency of these panels can vary, impacting how quickly and effectively they can charge a car battery.
Charge Controller: The charge controller is crucial in managing power flow from the solar panels to the battery. It ensures that the battery receives the correct amount of charge and protects it from being overcharged, which can lead to battery damage and decreased lifespan.
Battery Connection Cables: These cables are essential for connecting the solar charger to the car battery. They come equipped with alligator clips or ring terminals that allow for secure and easy attachment, ensuring that the energy generated by the solar panels is safely delivered to the battery.
Portable Design: Many car battery solar chargers are designed for portability, featuring lightweight and compact designs. This makes them easy to carry and store, allowing car owners to charge their batteries at home or while on the road.
Output Voltage: A key aspect of a car battery solar charger is its output voltage, which is typically set at 12 volts to match most car batteries. Choosing a charger with the appropriate voltage rating is essential for compatibility and effectiveness in charging the battery without causing damage.
What Are the Benefits of Using a Car Battery Solar Charger?
The benefits of using a car battery solar charger include convenience, cost savings, and environmental friendliness.
- Convenience: A solar charger can be easily set up and used anywhere there is sunlight, eliminating the need for electrical outlets or jump-starting from another vehicle.
- Cost Savings: By maintaining the battery’s charge with solar energy, users can prolong the life of their car battery and reduce costs associated with battery replacements and maintenance.
- Environmental Friendliness: Utilizing solar energy as a power source reduces reliance on fossil fuels and lowers the carbon footprint, making it a more sustainable option for vehicle maintenance.
- Portability: Many solar chargers are lightweight and compact, making them easy to transport and store, which is particularly useful for road trips or remote locations.
- Versatility: Solar chargers can often be used for various battery types and other devices, providing a multifunctional tool for outdoor enthusiasts and those with multiple vehicles.
Convenience is a significant advantage, as a solar charger can be set up virtually anywhere the sun shines, allowing users to keep their batteries charged without relying on traditional power sources. This is especially useful in remote areas or during camping trips when access to electricity is limited.
Cost savings are another critical benefit, as consistently maintaining the battery charge with solar power can help extend the battery’s lifespan, thereby reducing the frequency and cost of replacements. This proactive approach to battery maintenance can lead to substantial savings over time.
In addition to being cost-effective, using a solar charger is an environmentally friendly choice. By harnessing solar energy, users contribute to a reduction in greenhouse gas emissions associated with traditional energy sources, promoting a greener lifestyle.
Portability is a notable feature of many solar chargers, designed to be lightweight and compact. This makes them easy to carry in a vehicle or store when not in use, providing flexibility for users who frequently travel.
Finally, the versatility of solar chargers allows them to serve multiple purposes beyond just charging car batteries. Many models are compatible with various battery types and can even charge other devices, making them an excellent investment for those with diverse energy needs.
What Key Features Should You Look For in a Car Battery Solar Charger?
When searching for the best car battery solar charger, there are several key features to consider to ensure optimal performance and reliability.
- Solar Panel Efficiency: Look for a solar charger with high-efficiency solar panels, typically rated above 20%. Higher efficiency means more sunlight is converted into usable energy, resulting in faster charging times and better performance in low-light conditions.
- Output Voltage and Current: Ensure the charger provides the appropriate output voltage and current for your vehicle’s battery. Most car batteries require a 12V output, and a charger with adjustable current settings can help prevent overcharging and extend battery life.
- Durability and Weather Resistance: A robust design with weather-resistant features is essential for outdoor use. Look for chargers made with high-quality materials that can withstand rain, UV exposure, and varying temperatures to ensure longevity and reliability.
- Portability: Choose a lightweight and compact solar charger for easy transport and installation. A portable design makes it convenient to use in various locations, whether you’re at home or on the road.
- Built-in Protection Features: Opt for chargers that include built-in protection mechanisms such as overcharge and short-circuit protection. These features help safeguard your car battery and the charger itself, reducing the risk of damage.
- Ease of Use: Look for a solar charger that is simple to set up and operate. User-friendly designs with clear instructions and minimal assembly can save time and reduce frustration during installation.
- Compatibility: Ensure the solar charger is compatible with your specific vehicle battery type, whether it’s lead-acid, AGM, or lithium-ion. Compatibility increases the efficiency of the charging process and helps maintain battery health.
- Warranty and Customer Support: A good warranty and responsive customer support can be crucial in case you encounter issues. A longer warranty period often indicates the manufacturer’s confidence in their product’s quality and durability.
Why Is Solar Panel Efficiency Important for Charging?
Solar panel efficiency is crucial for effectively charging a car battery because it directly influences how much energy is converted from sunlight into usable electrical power. Higher efficiency panels can generate more electricity in a shorter time, which is essential for keeping your car battery topped off, especially if the vehicle is not used frequently.
Key factors related to solar panel efficiency include:
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Energy Output: More efficient panels produce more energy per square foot. This means a smaller solar setup can still provide sufficient power to maintain a battery charge, making it ideal for compact spaces.
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Charging Speed: When the solar panel can harvest energy more effectively, it reduces the time required to recharge a depleted battery. This is particularly important for users who rely on solar chargers during off-grid adventures.
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Performance Under Low Light: Efficient solar panels tend to perform better under non-ideal conditions, such as cloudy weather or early/late in the day. This reliability ensures that the car battery can still receive some charge even when sunlight isn’t optimal.
Selecting a solar charger with high efficiency not only optimizes charging times but also enhances reliability, ensuring your vehicle is ready for use when needed. Consider efficiency ratings such as those from the National Renewable Energy Laboratory (NREL) when choosing your solar charger.
How Do You Choose the Right Car Battery Solar Charger?
To choose the best car battery solar charger, consider the following key factors:
- Wattage: The wattage of the solar charger determines how quickly it can charge the battery. A higher wattage means faster charging, which is essential for larger batteries or if you need to recharge quickly.
- Portability: If you plan to use the solar charger on the go, its size and weight are crucial. A lightweight and compact design makes it easier to transport and store when not in use.
- Durability: Look for a solar charger that can withstand outdoor conditions. Features like waterproofing and rugged materials will ensure longevity and reliable performance in various weather scenarios.
- Compatibility: Ensure that the solar charger is compatible with your specific car battery type, whether it’s lead-acid, AGM, or lithium-ion. Some chargers may have specialized features for certain battery types, enhancing charging efficiency.
- Charge Controller: A built-in charge controller helps regulate the voltage and current coming from the solar panel, preventing overcharging and prolonging battery life. This feature is especially important for maintaining battery health over time.
- Ease of Use: Look for solar chargers that are easy to set up and use, with clear instructions and minimal installation requirements. User-friendly designs can save time and reduce the likelihood of errors during setup.
- Price and Warranty: Evaluate the price in relation to the features offered. A good warranty can provide peace of mind and protection for your investment in case of defects or performance issues.
What Are the Top Brands of Car Battery Solar Chargers?
The top brands of car battery solar chargers are:
- Renogy: Renogy is known for its high-quality solar products, including car battery solar chargers that are compact and efficient. Their chargers often come with advanced features such as charging management systems and built-in protection against overcharging, making them ideal for maintaining battery health in various weather conditions.
- NOCO: NOCO solar chargers are celebrated for their durability and user-friendly design. They offer a range of portable solar chargers that are waterproof and dustproof, ensuring reliable performance even in harsh environments, and are particularly popular among outdoor enthusiasts.
- Sunway Solar: Sunway Solar provides affordable and reliable solar chargers that are designed for easy use and portability. Their products typically feature a lightweight design and a variety of power outputs, making them suitable for both car batteries and other small devices.
- Eco-Worthy: Eco-Worthy is recognized for producing efficient solar chargers that cater to various energy needs. Their car battery solar chargers often come with multiple charging options and can be used in conjunction with other solar equipment, making them versatile for different applications.
- ALLPOWERS: ALLPOWERS offers innovative solar chargers that are compact and equipped with advanced solar cells for better energy conversion. Many of their models come with additional USB ports, allowing users to charge multiple devices simultaneously, which adds to their practicality for road trips.
How Do You Properly Use a Car Battery Solar Charger?
To properly use a car battery solar charger, it’s essential to follow specific steps to ensure efficiency and safety.
- Select the Right Charger: Choose a solar charger that matches the specifications of your car battery.
- Set Up in Direct Sunlight: Position the solar panel in an area where it receives maximum sunlight during the day.
- Connect the Charger Correctly: Attach the solar charger’s clamps to the battery terminals, ensuring proper polarity.
- Monitor Charging Progress: Keep an eye on the charger’s indicator lights or readout to assess charging status.
- Disconnect Safely: Once charging is complete, disconnect the charger in the reverse order of connection.
Select the Right Charger: It’s crucial to select a solar charger that is compatible with your car battery’s voltage and type, whether it’s a lead-acid or lithium battery. Look for features such as built-in voltage regulators and overcharge protection to enhance safety and efficiency.
Set Up in Direct Sunlight: For optimal performance, set up your solar panel in a location that receives full, unobstructed sunlight for most of the day. Avoid shaded areas, as even partial shading can significantly reduce the charger’s effectiveness.
Connect the Charger Correctly: When connecting the solar charger, ensure that the positive clamp is attached to the positive terminal and the negative clamp to the negative terminal. This is vital to prevent damage to the battery or the charger due to incorrect polarity.
Monitor Charging Progress: Regularly check the charger’s indicator lights to determine the charging status. Many modern chargers have built-in displays that show the voltage level and whether the battery is fully charged, helping you avoid overcharging.
Disconnect Safely: After the battery is fully charged, it is important to disconnect the charger carefully. Remove the negative clamp first, followed by the positive clamp, to minimize the risk of sparks and ensure safety during the disconnection process.
What Common Mistakes Should You Avoid When Using a Car Battery Solar Charger?
When using a car battery solar charger, there are several common mistakes to avoid to ensure optimal performance and longevity.
- Ignoring Compatibility: It is crucial to ensure that the solar charger is compatible with your car battery type, whether it’s lead-acid, AGM, or lithium. Using a charger that is not designed for your specific battery can lead to damage and void warranties.
- Placement Issues: Failing to position the solar panels in direct sunlight can significantly reduce charging efficiency. Always place the charger in an unobstructed area where it receives maximum sunlight exposure throughout the day.
- Neglecting Maintenance: Solar panels require occasional cleaning to maintain their efficiency. Dirt, dust, and debris can accumulate over time, blocking sunlight and reducing the charger’s performance, so regular inspections and cleaning are essential.
- Overcharging Concerns: Some users may overlook the importance of a charge controller which prevents overcharging. Without it, the battery can be overcharged, leading to potential damage or reduced lifespan of the battery.
- Ignoring Battery Health: Regularly monitoring the health of your car battery is vital when using a solar charger. If the battery is already weak or sulfated, the solar charger may not be effective, and it could lead to further deterioration of the battery.
- Not Using the Right Accessories: Using incorrect cables or connectors can cause inefficiencies in charging or even create safety hazards. Always use the appropriate accessories that come with or are recommended for your solar charger.