BigBlue 28W High-Efficiency Solar Panel Charger with Dual USB-C and USB-A

The BigBlue 28W High-Efficiency Solar Panel Charger is a foldable power source designed to charge personal electronics directly from sunlight during camping trips, hikes, and emergency outages. It converts up to 25.4% of solar energy into electricity using advanced N-type cells without front metal lines, providing reliable output in full sun and low-light environments.

Equipped with dual USB-C ports and a standard USB-A port, this panel delivers up to 5V/3A per port and a shared maximum output of 5V/4.8A. You can plug in multiple devices at once, including smartphones, GPS units, flashlights, and power banks. A built-in LED light glows solid blue when proper charging is underway, letting you confirm power delivery at a glance without constantly checking your phone screen.

Portability is a central feature of the design. The unit folds down to 11 by 6 by 1.4 inches and weighs 1.5 pounds, fitting easily into a tight backpack or emergency kit. It includes carabiners for straightforward attachment to gear and features a special polymer surface with an IP44 rating to resist outdoor rain and fog.

Keep in mind that this panel does not contain an internal battery and cannot store power for later. It requires direct sunlight and cannot power larger electronics such as laptops or large power stations. The USB junction box is also not waterproof, and devices should be kept shaded during use to prevent their internal thermal protection from slowing down charging speeds.

Verdict: The BigBlue 28W Solar Panel is a dependable, compact charging solution for hikers, campers, and emergency preppers. It offers fast direct charging for small USB devices whenever you have open sunlight.

• Power Rating: 28W
• Solar Efficiency: 25.4%
• Cell Type: N-type solar cells
• Port Configuration: 2x USB-C, 1x USB-A
• Max Port Output: 5V/3A per port (5V/4.8A total)
• Folded Dimensions: 11 x 6 x 1.4 inches
• Weight: 1.5 lbs
• Water Resistance: IP44 (panel surface only)
• Included Accessories: 50cm USB-C to USB-C cable, carabiners, user manual

A great fit if you:

• Need off-grid daytime power for smartphones, GPS units, flashlights, or small power banks.
• Want a lightweight, foldable solar panel for backpacking, camping, or emergency preparedness kits.
• Prefer having both modern USB-C and standard USB-A charging options in one compact unit.

Consider something else if you:

• Need to power laptops or large portable power stations.
• Expect to store solar energy directly inside the panel without connecting an external power bank.
• Plan to operate the charger behind a window or vehicle windscreen.

Does this solar charger store power for nighttime use?
No, it does not have an internal battery. It charges connected devices directly in real time under direct sunlight.

Can I use this charger inside behind a window or car windshield?
The manufacturer advises against using this solar panel behind a window or windscreen, as direct outdoor sunlight is required for optimal performance.

Is the entire charger waterproof?
The polymer panel surface has an IP44 rating to resist rain and fog, but the USB junction box itself is not waterproof and must be protected from moisture.

Does it come with a charging cable for Apple devices?
No, a cable for Apple devices is not included in the package, though a 50cm USB-C to USB-C cable is provided.