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FlexSolar 40W Solar Panel for Outdoor Adventures and Emergencies

With dual USB ports and smart charging capabilities, it offers a reliable power source in sunlight.

I purchased the FlexSolar 40W Solar Panel for camping trips and outdoor adventures, and it has exceeded my expectations. The lightweight and foldable design made it easy to carry in my backpack, and the durable construction with waterproof properties ensured it could withstand various weather conditions. I was impressed by how fast it charged my devices and appreciated the auto-restart function when moving in and out of shadows, ensuring consistent charging.

FlexSolar 40W Solar Panel: Dual USB Charging Ports

FlexSolar 40W Solar Panel


The FlexSolar portable solar panel features dual USB charging ports, including one USB-A and one USB-C output port. Each port can deliver a maximum of 18W, making it suitable for charging a variety of devices such as phones, power banks, tablets, and more. These ports are ideal for powering electronic devices in outdoor settings, providing a convenient solution for power emergencies. It’s important to note that while the solar panel can charge devices directly, it does not have the capability to store power.

FlexSolar 40W Solar Panel: Lightweight and Portable Design

FlexSolar 40W Solar Panel


With its four foldable panels and lightweight design at 3.3lbs (1500g), the FlexSolar solar panel is highly portable. When unfolded, it has a size of 35.9x12x0.6 inches, similar to an iPad, and when folded, it measures 12×9.8×0.7 inches. This compact size makes it easy to store in a backpack or carry by hand. The panel also features four hanging holes and two carabiners, allowing for easy attachment to a backpack while hiking, making it perfect for outdoor power emergencies or DIY solar projects.

FlexSolar 40W Solar Panel: Smart Charging Technology

FlexSolar 40W Solar Panel


The FlexSolar panel is equipped with integrated IC technology that enables auto-restart functionality, ensuring consistent charging even when moving in and out of shadows. The panel can detect connected devices and optimize the charging process accordingly. A built-in LED light indicates the charging status, providing users with real-time feedback. Additionally, the panel offers protection against overcurrent, overheating, and short-circuits, ensuring safe and efficient charging for your electronic devices.

FlexSolar 40W Solar Panel: Rugged and Durable Construction

FlexSolar 40W Solar Panel


The FlexSolar solar panel utilizes durable ETFE film lamination and encapsulation technologies, providing wear resistance and self-cleaning properties. It has an IP67 waterproof and dustproof rating, making it suitable for use in various weather conditions. The thin and flexible ETFE panels are more durable than traditional PET panels and can withstand rugged outdoor environments. While the solar panel itself is rugged, it’s important to note that the junction box is not waterproof.

FlexSolar 40W Solar Panel: High Solar Conversion Rate

FlexSolar 40W Solar Panel


The FlexSolar panel is made of Grade A+ monocrystalline silicon, ensuring high solar conversion efficiency. With a conversion rate of up to 24%, the panel effectively converts sunlight into electricity, outperforming other cells of the same size. To maximize its performance, the panel needs to be placed in direct sunlight. The high conversion rate makes the FlexSolar solar panel an efficient and reliable source of green energy for your electronic devices.


  • The FlexSolar 40W Solar Panel has dual USB charging ports, allowing you to charge multiple devices at once.
  • This solar panel is portable and lightweight, making it easy to carry and store in your backpack for outdoor activities.
  • The smart charging technology of the FlexSolar panel ensures optimized charging for connected devices, with auto-restart function and LED indicators for charging status.


  • The junction box of the solar panel is not waterproof, which may limit its functionality in wet environments.
  • Some users have reported issues with the durability of the stand, indicating a potential need for better construction in certain parts.
  • The solar panel does not have the ability to store power, so it must be used directly to charge devices in sunlight.

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In conclusion, the FlexSolar 40W Solar Panel is a highly efficient and rugged portable solar charger that is perfect for outdoor enthusiasts and emergency preparedness. Its high solar conversion rate, smart charging capabilities, and durable design make it a reliable companion for powering electronic devices on the go. I highly recommend this solar panel for anyone looking for a dependable and portable power source.

Questions & Answers:

Question: How many charging ports does the FlexSolar 40W Solar Panel have?

Answer: The FlexSolar 40W Solar Panel comes with dual USB charging ports – one USB-A and one USB-C.

Question: Is the FlexSolar panel suitable for outdoor use?

Answer: Yes, the FlexSolar panel is designed for outdoor use, with rugged and waterproof properties that make it suitable for various weather conditions.

Question: What is the solar conversion rate of the FlexSolar 40W Solar Panel?

Answer: The FlexSolar 40W Solar Panel has a high solar conversion rate of up to 24%, thanks to its Grade A+ monocrystalline silicon construction.

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