1. Introduction
The BigBlue 28W Solar Charger is a portable and foldable solar panel designed to provide reliable power for your electronic devices on the go. Featuring advanced solar cell technology and multiple USB output ports, it's an ideal companion for outdoor activities, travel, and emergency preparedness.
What's in the Box:
- BigBlue 28W Solar Panel Charger x1
- 50cm USB-C to USB-C Cable x1
- Carabiners x4
- User Manual x1
Image: The BigBlue 28W Solar Charger in its folded, compact state and fully unfolded, showcasing its multiple solar panels.
2. Key Features
Advanced Performance & High-Efficiency
The 28W solar charger features a shadow-free surface design and advanced N-type solar cells, providing 20% more power from every ray. It boasts an industry-leading 25.4% sunlight conversion efficiency, ensuring superior low-light performance and extended operational longevity.
Image: A cross-section diagram illustrating the high-quality construction of BigBlue's solar cells, emphasizing their efficiency and durability compared to conventional designs.
Upgraded Triple-Port Output
Equipped with dual USB-C and one USB-A ports, each delivering a maximum output of 5V/3A, and a collective total of 5V/4.8A. This allows for simultaneous charging of multiple devices.
Image: The charging hub of the solar panel with three USB ports actively charging a smartphone, a tablet, and a power bank.
IP44 Waterproof & Ultra-Portable Design
The durable polymer surface resists rain, fog, and wear. The charger folds to just 11x6x1.4 inches and weighs only 1.5 lbs, making it compact and easy to carry in a backpack.
Note: The USB junction box is not waterproof.
Image: The solar charger being attached to a backpack, demonstrating its compact size and the included carabiners for easy transport. Insets show temperature resistance and water resistance.
Universal Compatibility & Intelligent Safety Charging
Charge smartphones, power banks, GPS, flashlights, and other small electronics. Equipped with smart chips for 100% safe energy delivery. If clouds block the sun, the charger will automatically restart charging your electronic device in approximately 30 seconds when sufficient sunlight returns.
Image: A visual representation of the wide range of devices compatible with the solar charger, including various mobile phones, tablets, and portable electronics.
Image: The solar panel demonstrating its smart detection of sunlight, showing how it automatically resumes charging after temporary cloud cover.
3. Setup Guide
- Unfold the Solar Panel: Carefully unfold all four solar panels to their full extension.
- Position for Optimal Sunlight: Place the solar panel directly under sunlight. For best results, adjust the angle of the panel to face the sun directly. You can use the included carabiners to attach the panel to a backpack, tent, or other stable surface to maintain optimal sun exposure.
- Access USB Ports: Locate the USB junction box within the zippered pouch on the side of the panel.
- Connect Your Device: Use the provided USB-C to USB-C cable or your device's original charging cable to connect your device to one of the available USB-A or USB-C output ports.
The LED indicator light on the USB junction box will glow solid blue when the charger is receiving sufficient sunlight and charging properly.
Image: The solar charger shown in both its compact, folded state and its fully extended form, illustrating its portability and ease of deployment.
Setup Demonstration Video:
Video: An official BigBlue video demonstrating the unfolding, port access, and device connection process for the 28W Solar Charger.
4. Operating Instructions
- Direct Charging: Connect your device directly to the solar charger's USB ports. Ensure the panel is in direct sunlight for optimal charging speed.
- Charging Multiple Devices: The triple-port design allows you to charge up to three devices simultaneously. Note that charging speed may vary depending on the number of devices connected and the intensity of sunlight.
- Using a Power Bank (Recommended): For more consistent power delivery, especially in fluctuating sunlight conditions, it is recommended to charge a power bank first. Once the power bank is charged, you can then use it to charge your devices at any time, regardless of sunlight availability. This also helps protect your devices from inconsistent power flow.
The charging strength will differ based on weather conditions (sunny, cloudy, rainy).
Important: The solar panel cannot store electricity. It must be used in direct sunlight while connected to your devices or a power bank. Do not leave your phone or other devices in direct sunlight while charging, as this can be detrimental to their battery health. Always keep the device being charged in the shade or within the charger's integrated pouch.
5. Maintenance
- Cleaning: Wipe the solar panels with a soft, damp cloth to remove dust or dirt. Avoid using harsh chemicals or abrasive materials.
- Storage: When not in use, fold the solar charger and store it in a cool, dry place away from direct sunlight and extreme temperatures.
- Water Resistance: The panel's surface is IP44 waterproof, protecting against occasional rain or fog. However, the USB junction box is not waterproof and should be kept dry.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not charging / LED indicator not lit | Insufficient sunlight; panel not positioned correctly; device not properly connected. | Ensure the panel is in direct, strong sunlight. Adjust the panel's angle towards the sun. Check all cable connections. |
| Slow charging speed | Weak sunlight; multiple devices connected; long/low-quality charging cable; device in use while charging. | Move to stronger sunlight. Charge fewer devices simultaneously. Use a shorter, high-quality cable. Avoid using the device while charging. Turn off the device for faster charging. |
| Charger stops working temporarily | Temporary cloud cover; device overload. | The smart IC technology will automatically restart charging in about 30 seconds once sufficient sunlight returns. If overloaded, unplug devices and reconnect. |
| USB junction box is wet | Exposure to water. | Immediately disconnect all devices. Dry the junction box thoroughly before re-use. Avoid exposing it to water. |
7. Specifications
| Attribute | Value |
|---|---|
| Model Number | B401DD |
| Product Dimensions (Folded) | 11.1 x 6.3 x 1.34 inches |
| Item Weight | 1.48 pounds |
| Power Output | 28W Max |
| USB Output 1 (USB-C) | 5V/3A Max |
| USB Output 2 (USB-C) | 5V/3A Max |
| USB Output 3 (USB-A) | 5V/3A Max |
| Total Output | 5V/4.8A Max |
| Solar Cell Efficiency | 25.4% |
| Waterproof Rating | IP44 (Panel surface only, USB box not waterproof) |
| Connectivity Technology | USB |
| Manufacturer | BigBlue |
8. Warranty & Support
BigBlue offers a 2-Year Quality Guarantee for this product. For any questions, concerns, or technical assistance, please contact our friendly customer service team.
You can also refer to the official User Manual PDF for more detailed information: BigBlue 28W Solar Charger User Manual (PDF)
