Best 10 400 Watt Solar Panels for 2024 Under $999

Harnessing solar energy has never been more accessible, and 400-watt solar panels are leading the charge for both homes and businesses. These panels offer a perfect balance between efficiency and size, making them ideal for a variety of applications.

Whether you’re looking to power your RV on the road or reduce your home’s carbon footprint, a 400-watt panel can be a game-changer.

But with so many options on the market, how do you choose the best one? We’ve done the legwork for you, sifting through the noise to find the top-performing 400-watt solar panels available today.

From durability to energy output, we’ve considered all the crucial factors to help you make an informed decision.Read on to discover which models stand out and why they could be the perfect addition to your renewable energy setup.

1. High Efficiency and Versatility: DOKIO 2PCS 400 Watt Solar Panels Kit

DOKIO 2PCS 400 Watt Solar Panels Kit
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Perfect for various setups, the DOKIO 2PCS 400 Watt Solar Panels Kit balances efficiency with versatility. Each panel boasts a high conversion efficiency, ensuring you get the most power even in limited sunlight. The lightweight design of these panels makes them easy to transport and install, an advantage for camping or RV trips.

Suitable for residential and mobile applications, this kit provides dependable performance across various environments. With sturdy construction, these panels can withstand adverse weather conditions, enhancing their lifespan. The included IP68 solar connectors guarantee a secure connection, vital for optimizing power delivery.

Effortless setup with pre-drilled holes and included mounting hardware lets you start harnessing solar energy quickly. Combine functionality with portability; rely on the DOKIO kit for consistent power generation.

  • Material: Fiberglass
  • Product Dimensions: 27.9″L x 3.2″W x 33.7″H
  • Item Weight: 30.2 Pounds
  • Connector Type: IP68 solar connectors
  • Included Components: 1x solar panel
  • Maximum Power: 400 Watts

2. Lightweight and Portable: Renogy 400W Solar Suitcase

Renogy 400W Solar Suitcase
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Boasting lightweight portability, the Renogy 400W Solar Suitcase is ideal for those constantly on the move. It only weighs 56.4 pounds, making it easy to carry while camping or traveling.

Featuring efficient monocrystalline panels, this suitcase model ensures you get the most out of your sunlight. Equipped with 20-24% conversion efficiency, this solar panel kit is both reliable and high-performing.

Including built-in kickstands, the Renogy 400W can be easily set up within minutes. The aluminum frame and robust corner protections ensure durability, regardless of where you take it.

Folding easily for storage, the Renogy 400W Solar Suitcase is designed for ultimate convenience. Whether you’re using it for your RV, boat, or outdoor excursions, it fits seamlessly into various uses.

Technical details:

  • Brand: JJN
  • Material: Aluminum
  • Product Dimensions: 30.3″L x 1.4″W x 53.7″H
  • Maximum Power: 400 Watts
  • Connector Type: MC4
  • Included Components: Panels
  • Maximum Voltage: 12 Volts
  • Item Weight: 56.4 pounds

3. Dual Installation Bifacial Panel: Bifacial 400 Watt 12V 10BB Monocrystalline Solar Panels

Bifacial 400 Watt 12V 10BB Monocrystalline Solar Panels
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Featuring a bifacial design, these 400W 12V 10BB Monocrystalline Solar Panels offer versatile installation options. Utilizing monocrystalline silicon, they achieve high efficiency even in partial shade. Equipping yourself with these panels ensures enhanced energy output as they capture sunlight from both sides.

Supporting fast conversion, they reach optimal power levels with the right angle adjustments. Designed durably, they can withstand various weather conditions, making them ideal for outdoor setups. Waterproof build guarantees longevity and reliability, so no need to worry about rain damage. The MC4 connectors simplify installation for smooth integration into your existing system.

Rated at 400W, their real-time output depends on sunlight angle and weather. Adjusting the panels to maximize sun exposure significantly boosts performance. Installing these panels offers an eco-friendly power solution with reduced grid dependency.

  • Brand: Anker
  • Material: Monocrystalline Silicon
  • Product Dimensions: 35.94″L x 26.89″W x 1.97″H
  • Item Weight: 25.64 Pounds
  • Connector Type: MC4
  • Maximum Power: 400 Watts
  • Color: Gray
  • Batteries Included?: No
  • Batteries Required?: No

4. Smart Technology for Outdoors: Anker SOLIX PS400 Solar Panel

Anker SOLIX PS400 Solar Panel
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Enjoy enhanced efficiency with the Anker SOLIX PS400 Solar Panel, perfect for outdoor enthusiasts. Boasting a remarkable 400-watt power capacity, this panel ensures your off-grid adventures remain powered. Featuring an advanced monocrystalline design, it converts up to 23% of solar energy into usable power. This high conversion rate means more energy for your gadgets and fewer panels to carry.

Survive any weather with its sturdy construction, designed to withstand high wind (2400 Pa) and snow loads (5400 Pa). This makes the Anker SOLIX PS400 perfect for unpredictable outdoor conditions. The IP67 waterproof rating assures reliability even during heavy rain, ensuring your power needs are met regardless of the climate.

Install easily with pre-drilled holes on the back of the panel, eliminating the need for heavy tools. This feature saves valuable time and effort, which is vital when setting up in remote areas. The lightweight design, weighing just 35.6 pounds, adds to its portability, making it an excellent choice for RVs or camping.

Overall, the Anker SOLIX PS400 marries functionality and durability seamlessly, ideal for anyone looking to minimize their carbon footprint while enjoying modern conveniences outdoors.

  • Maximum Power: 400 Watts
  • Connector Type: Solar Connector
  • Efficiency: High Efficiency
  • Included Components: Solar Panels
  • Product Dimensions: 65″L x 41″W x 1.38″H
  • Item Weight: 35.6 Pounds
  • Maximum Voltage: 40 Volts (DC)
  • Waterproof Rating: IP67

5. High-Efficiency Class A Cells: BougeRV 400 Watts Solar Panel

BougeRV 400 Watts Solar Panel
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Offering high-efficiency Class A cells, BougeRV’s 400 Watts solar panel stands out for its reliable performance. Built with monocrystalline technology, it delivers up to 22% efficiency, ensuring optimal power output in various conditions. This panel is designed to perform exceptionally well even on cloudy days, maximizing solar energy conversion.

Durable, tempered glass and the robust aluminum frame enhance the longevity of the BougeRV solar panel. Weather-resistant, it can withstand harsh outdoor conditions, including snow and high winds, making it perfect for residential, commercial, and RV applications.

Installation is made easy with pre-drilled holes, allowing compatibility with different mounting systems. This flexibility ensures you can set it up either on rooftops, ground mounts, or RVs without hassle. The BougeRV 400W panel is ideal for those looking to harness the sun’s power reliably and efficiently.

  • Brand: ECO-WORTHY
  • Material: Glass
  • Product Dimensions: 38.6″L x 21.1″W x 1.4″H
  • Efficiency: High Efficiency
  • Included Components: Fuse
  • AC Adapter Current: 3.76 Amps
  • Maximum Voltage: 12 Volts
  • Maximum Power: 100 Watts
  • Item Weight: 62.9 pounds
  • Size: 400W 12V MPPT KIT

6. Complete Premium Kit: ECO-WORTHY 400 Watt Solar Panel Kit

ECO-WORTHY 400 Watt Solar Panel Kit
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Enjoy a seamless solar experience with the ECO-WORTHY 400 Watt Solar Panel Kit. Known for its all-encompassing components, this kit includes everything needed for efficient energy harnessing. Panels are built with high-efficiency monocrystalline cells, ensuring optimal performance even on cloudy days.

Experience flexible use with its compatibility for various setups such as RVs, boats, and home systems. The included 40A MPPT charge controller optimizes the charging process, preventing overcharging and ensuring safe energy storage for extended battery life.

Installing the panels is made easy with pre-drilled holes and an accompanying Z-bracket mounting kit, catering to multiple surface types.

Benefit from real-time monitoring with the LCD display on the charge controller, offering insights into voltage, current, and battery status. Harvesting energy effectively and maintaining battery health has never been simpler. This kit also stands out for its robust build, featuring tempered glass and a corrosion-resistant aluminum frame, enabling durability in harsh weather conditions.

Unlock the full potential of solar energy with ECO-WORTHY’s reliable and user-friendly kit.

  • Material: ETFE, Monocrystalline Silicon, Rubber, Oxford, TCPC
  • Product Dimensions: 30.7″L x 27.3″W x 2″H
  • Item Weight: 22 Pounds
  • Efficiency: 24%
  • Connector Type: DC5525, DC7909, Anderson, XT60, MC4
  • Folded Size: 30.727.32in
  • Included Components: Solar Connector 4-in-1 (XT60, DC5525, Anderson, DC7909) Adapter Cable, solar panel
  • AC Adapter Current: 11 Amps
  • Maximum Voltage: 48 Volts
  • Upper Temperature Rating: 65 Degrees Celsius
  • Maximum Power: 400 Watts

7. Ultra-Light with High Conversion: 400W Portable Foldable Solar Panel

400W Portable Foldable Solar Panel
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Unfold the NURZVIY 400W Portable Foldable Solar Panel and you’re greeted by high-performance monocrystalline silicon cells wrapped in a sleek, ultra-light design. Weighing just 36 pounds, this panel proves an ideal companion for those on the move, be it camping, RVing, or any off-grid adventure.

Enjoy high conversion efficiency, thanks to the advanced monocrystalline technology. It ensures maximum power output even in low-light conditions. Hook it up easily with MC4 connectors, offering a hassle-free setup.

Pack and go quickly with a folded size of just 41.7 x 24.7 x 1.1 inches. These compact dimensions make it effortless to carry along, whether stowed in your vehicle or carried by hand. The included carry bag and supportive hooks add convenience.

Equipped with multiple protections—voltage control, overcharging, overcurrent, overload, and short circuit—the NURZVIY panel safeguards your devices and ensures reliable operation. Paired with the user guide, this makes it straightforward to get started.

Some quick highlights include:

  • Material: Monocrystalline Silicon
  • Folded Size: 41.724.71.1 inch
  • Connector Type: MC4
  • Item Weight: 36 Pounds
  • Maximum Voltage: 40 Volts
  • Maximum Power: 400 Watts
  • Included Components: User Guide, Carry Bag with Support, MC4 Connector (MC4 to Anderson/XT60/DC7909), 4 Hooks

8. Luggable and Durable Design: 400 Watts Foldable Solar Panel

400 Watts Foldable Solar Panel
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Looking for portability and durability in a 400 watt solar panel? Renogy’s 400 Watt Foldable Solar Panel Kit might be your answer. Designed for RVs, this kit offers easy setup and silent battery recharging. Setup takes minimal time thanks to the pre-installed connectors and included accessories.

Folding down neatly, the Renogy panel maximizes space without sacrificing power. Each panel provides up to 100 watts, combining different panels for a total of 400 watts of harnessed sunlight. Carry it around effortlessly—the entire kit only weighs 88 pounds.

Ensuring durability, Renogy uses UV-resistant ABS plastic, so you don’t have to worry about weather wear. Combined with a 25-year power output warranty, you get efficiency and longevity. The PWM charge controller optimizes battery compatibility and safety.

Travel with more freedom, docking and parking without power hookups. Operating silently, it lets you run limited electrical equipment without the buzz of a generator. Examples include running a small fridge or charging portable devices.

  • Material: UV-resistant ABS Plastic
  • Product Dimensions: 41.8″L x 20.9″W x 1.38″H
  • Item Weight: 88 Pounds
  • Efficiency: 22%
  • Connector Type: USB
  • Included Components: 1
  • AC Adapter Current: 30 Amps
  • Maximum Voltage: 600 Volts
  • Maximum Power: 400 Watts
  • Power Source: Solar-Powered

9. Off-Grid Kit for RVs: Renogy 400 Watts Monocrystalline Solar RV Kit

Renogy 400 Watts Monocrystalline Solar RV Kit
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Looking for a reliable off-grid solar solution for your RV? Renogy’s 400 Watts Monocrystalline Solar RV Kit could be your best bet. This kit includes four 100-watt monocrystalline panels, each renowned for high efficiency and durability. It’s designed to deliver robust power output, perfect for RV adventures, providing steady power regardless of weather conditions.

Included is a 30A PWM charge controller an essential component for regulating battery charging, ensuring your battery’s longevity. The controller features an LCD display for easy monitoring with programmable parameters for various battery types, making it versatile.

Pre-drilled mounting holes on the back of the panels simplify installation. Additionally, it includes all necessary cables and connectors making it a true plug-and-play solution. Best for those who need a reliable and straightforward off-grid option.

  • Wattage: 400 watts
  • Efficiency: High Efficiency
  • Connector Type: Solar connector
  • Material: Etfe
  • Product Dimensions: 40.94″L x 23.62″W x 4.72″H
  • Item Weight: 40.8 Pounds
  • Folded Size: 41.3 x 104 x 2.5
  • Included Components: SP037 Solar panel, 2 Years warranty
  • Maximum Voltage: 37.5 Volts

10. Waterproof and Reliable: ALLPOWERS SP037 400W Portable Solar Panel

ALLPOWERS SP037 400W Portable Solar Panel
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Searching for a waterproof and reliable solar panel? Look no further than the ALLPOWERS SP037 400W Portable Solar Panel. Designed with monocrystalline technology, it delivers high efficiency, harnessing the maximum amount of sunlight.

Creating a durable, high-performing product, ALLPOWERS ensured the SP037 is waterproof with an IP67 rating. This means it can withstand tough weather conditions like rain and snow, ensuring uninterrupted power supply.

Offering portability, the SP037 is foldable and lightweight at just 14.3 pounds. Perfect for outdoor enthusiasts, it’s easy to transport and set up, making it ideal for camping and RV trips.

Equipped with advanced features, the SP037 includes four adjustable kickstands. These allow you to position the panel for optimum sun exposure, boosting its efficiency. The internal smart chip optimizes charging, ensuring your devices get the best power delivery.

Providing versatility, the panel includes multiple connector types for various applications. Supporting USB, 12V, and 24V outputs, it can charge power stations, batteries, and mobile devices. You’ll appreciate the hassle-free connection options, fitting different needs.

Durability is enhanced with a rugged ETFE coating, making the SP037 resistant to corrosion. This coating extends the panel’s lifespan, ensuring long-term performance.

Compared to other panels, the ALLPOWERS SP037 stands out for its construction, user-friendliness, and efficiency. While some panels are cumbersome to move, this one’s designed for convenience and reliability.

You’ll find the ALLPOWERS SP037 400W Portable Solar Panel a worthy investment. Its waterproof design, high efficiency, ease of portability, and versatile applications make it an essential for outdoor power needs. Effortlessly blending performance with durability, it proves to be a go-to choice for reliable energy anytime, anywhere.

Factors to Consider When Choosing a 400 Watt Solar Panel

When choosing a 400-watt solar panel, several factors should be considered to ensure that it meets your energy needs, budget, and installation requirements. Here are some key factors to consider:

Panel Efficiency and Cell Type

Efficiency directly impacts power output under given conditions. High-efficiency panels convert more sunlight into electricity, maximizing space use. For instance, monocrystalline panels often offer up to 22% efficiency, outperforming polycrystalline ones.

Bifacial panels capture reflected light, improving efficiency even in partial shade. Brands like BougeRV use Class A cells to ensure peak performance. Checking efficiency ratings and cell types helps determine if a panel meets your energy needs.

Portability and Weight

Weight plays a crucial role in portability. Lightweight panels like the Renogy 400W Solar Suitcase enhance ease of transport and setup, ideal for RVs and camping. Portable panels often feature foldable designs, balancing size and power output without sacrificing performance.

Panels weighing 20-30 lbs are generally easy to handle. Consider how often you’ll move the panel to decide if portability is a priority.

Durability and Weather Resistance

Durability ensures long-term investment protection. Look for panels with tempered glass and sturdy aluminum frames. These materials withstand harsh weather. Anker SOLIX panels, for example, offer robust construction, resisting rain, hail, and high winds.

Weather resistance in the form of IP65 or higher ratings signifies protection against dust and water jets. Durable panels reduce maintenance costs and enhance outdoor applications.

Compatibility and Installation Requirements

Installation variety adds to the panel’s versatility. Pre-drilled holes simplify mounting on roofs, RVs, or ground setups. Compatible panels work seamlessly with existing charge controllers and inverters.

Panels from WindyNation and HQST typically include comprehensive kits, ensuring easy integration with solar systems. Verify voltage and connector types like MC4 for hassle-free connections. Compatibility ensures your panel fits your specific energy setup.

Solar Panel Maintenance Tips

Maintaining your solar panels is crucial to ensure they operate efficiently and have a long lifespan. Here are some key maintenance tips:

  1. Clean Panels Regularly: Dirt, dust, and debris can reduce efficiency. Use a soft brush or cloth with water to clean them. Avoid using abrasive materials or harsh detergents.
  2. Check Connections Frequently: Inspect all connections, wires, and cables for signs of wear or damage. Loose or corroded connections can reduce efficiency and pose a fire risk. Tighten any loose connections and replace damaged wires.
  3. Monitor Performance: Regular monitoring helps you spot performance issues early. Use the LCD display on your charge controller to check the system output. Comparing daily performance stats can help identify drops in efficiency.
  4. Trim Nearby Vegetation: Ensure no plants or trees cast shadows over the panels. Shading reduces solar panel efficiency significantly. Keep the area around the panels clear.
  5. Inspect for Damage: Regularly inspect your panels for cracks, chips, or other physical damage. Panels with damaged glass or frames need immediate attention to maintain performance and safety.
  6. Check the Mounting Structure: Ensure the mounting structure remains secure. High winds and other weather conditions can loosen mounts. Tighten all bolts and screws and check for rust or corrosion.
  7. Follow Manufacturer Guidelines: Each panel comes with specific maintenance recommendations. Ensure you’re following these guidelines, as they’re tailored to the specific materials and components of your panels.
  8. Test Batteries and Controllers: If using a complete solar kit, test your batteries and charge controllers regularly. Ensure they’re working properly and efficiently. Faulty batteries or controllers can drastically affect the system’s overall performance.
  9. Seasonal Adjustments: Adjust the tilt angle of your solar panels seasonally for optimal sunlight capture. During summer, a lower angle is better, and in winter, a steeper angle helps maximize exposure.
  10. Protect from Extreme Weather: In areas prone to extreme weather, consider portable or movable panels. Store them during severe weather to prevent damage from hail, heavy snow, or strong winds.

By maintaining your 400 watt solar panel properly, you’ll ensure optimal performance and longevity, getting the most out of your investment.

Additional Accessories for 400 Watt Solar Panels

To optimize the use and performance of 400-watt solar panels, several additional accessories can be considered. These accessories can enhance energy storage, safety, and system efficiency. Here are some important ones:

Essential Mounting and Installation Gear

Mounting gear is crucial for your 400 watt solar panel’s stability and efficiency. Aluminum mounting brackets are lightweight and corrosion-resistant, perfect for rooftop or ground installations. Adjustable tilt mounts maximize sun exposure, crucial for optimal energy output.

Adding cable management kits keeps wires neat, reducing the risk of damage and improving overall appearance. Quick-connect clamps simplify wiring, making installation faster and safer.

Including a sturdy weather-resistant junction box is imperative to protect electrical connections from the elements, ensuring the longevity of your setup.

Optimizing Performance through Accessories

Performance can be greatly enhanced with the right accessories. MPPT charge controllers increase energy harvest by up to 30%, vital for efficient storage and usage. Battery temperature sensors help prevent overheating and extend battery life, protecting your investment.

Voltage meters provide real-time data, letting you monitor system health and performance easily. Adding diodes prevents reverse current, safeguarding against potential panel damage.

Investing in mobile app-based monitoring systems allows you to track energy production and consumption remotely, ensuring everything’s running smoothly.

Safety Equipment for Installation

Safety should never be overlooked when installing 400 watt solar panels. Safety harnesses and lanyards are non-negotiable for rooftop installations, preventing falls and ensuring worker safety. Insulated gloves protect against electrical shocks, especially when dealing with live wires.

Fire extinguishers rated for electrical fires provide an additional layer of safety, ready for emergencies. Circuit breakers and fuses are essential, preventing overloads and protecting your system from electrical faults.

Including lockout/tagout kits ensures that no one accidentally energizes the system during maintenance, boosting overall safety for your setup.

FAQs About 400 Watt Solar Panels

What Is the Average Cost of a 400 Watt Solar Panel?

The average cost of a 400 Watt solar panel ranges between $200 and $350. Renogy’s models, known for their efficiency and durability, often hover around the higher end, closer to $350.

Brands like HQST and ECO-WORTHY offer more budget-friendly options around $200. Keep in mind, prices can vary based on the panel’s features, such as portability or inclusion of a charge controller.

In some cases, purchasing a complete kit like the Renogy 400 Watt Kit, which includes installation accessories, may be more cost-effective. Checking multiple options can help ensure you get the best value.

Can a 400 Watt Solar Panel Power My Entire Home?

A 400 Watt solar panel alone can’t power an entire home. On average, homes require significant energy, far beyond a single panel’s capability. However, a 400 Watt panel can supplement energy needs by powering specific appliances or devices. For an off-grid cabin or RV, it can be very effective.

Pairing multiple panels, such as using the Renogy 400 Watts Monocrystalline Solar RV Kit with four 100W panels, can increase overall power output, making it more feasible to meet a home’s energy requirements. Consulting with a solar energy professional can provide tailored advice.

What Maintenance Does a 400 Watt Solar Panel Require?

Routine maintenance for a 400 Watt solar panel is minimal but essential for optimal performance. Regular cleaning with water and a soft cloth to remove dust and debris is recommended. Inspect the panel’s glass for cracks and the frame for signs of corrosion or damage.

Check connections and wiring periodically to ensure there are no loose or frayed wires. With kits like the ALLPOWERS SP037, which are designed to be waterproof, maintenance ensures longevity even in harsh conditions.

Performing maintenance at least twice a year or after severe weather events keeps the panels efficient and extends their lifespan.

How Do I Install a 400 Watt Solar Panel?

Installing a 400 Watt solar panel involves several steps. First, select an optimal location with maximum sunlight exposure, usually a rooftop or open yard area. Mount the panel using brackets and frames included in kits like the ECO-WORTHY 400 Watt Solar Panel Kit.

Connect wiring from the panel to a charge controller, ensuring connections are secure. Finally, connect the panel to a battery bank or inverter to store and convert the solar energy for use.

For ease, some models, such as the Renogy 400 Watt Foldable Solar Panel Kit, offer portable, pre-wired setups with detailed instructions, making DIY installation straightforward.

Final Recommendations and Top Picks

Choosing the best 400 watt solar panel depends on your specific needs. For those seeking portability, the NURZVIY 400W Portable Foldable Solar Panel stands out with its lightweight design and high-performance cells, perfect for camping and RVing.

If durability and efficiency are top priorities, the Renogy 400W Solar Suitcase and BougeRV 400 Watts Solar Panel offer reliable off-grid solutions with high-efficiency monocrystalline panels.

For comprehensive kits, the ECO-WORTHY 400 Watt Solar Panel Kit and Renogy 400 Watts Monocrystalline Solar RV Kit provide everything needed for seamless installation and optimal performance.

The ALLPOWERS SP037 400W Portable Solar Panel is ideal for versatile charging needs, thanks to its waterproof design and portability.

By considering the unique features and benefits of each option, you can find the perfect 400 watt solar panel to meet your energy requirements, whether for home, RV, or outdoor adventures.

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Kimberly Lemmon

As a dedicated listener and fervent decorator, my focus is on elevating clients' homes with uniquely tailored interiors and exceptional service. Specializing in green room decoration, I integrate sustainable and eco-friendly elements seamlessly into designs. By attentively understanding clients' preferences and needs, I create personalized spaces that harmonize beauty with environmental consciousness. My mission is to provide unparalleled service, ensuring clients' homes reflect their values and inspire sustainable living. LinkedIn

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