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

In this review the BigBlue 28W Solar Panel Charger stands out as a compact, no-frills solution for campers, hikers and anyone assembling an emergency kit; the single biggest reason to buy is its reliable multi-device charging in real sunlight thanks to a shadow-free panel and triple ports. The tester found it especially useful when weight and pack size matter, folding to a small footprint and providing steady output to phones and power banks when positioned in direct sunlight. It is clearly designed for on-the-go charging rather than storing energy.

Key Features

• Advanced Performance: The shadow-free surface and N-type solar cells deliver higher output per ray, improving performance in varied daylight.
• Triple Ports: Dual USB-C plus one USB-A allow charging of multiple devices at once, so a phone and a power bank can be topped up together.
• High Efficiency: The 28W panel converts a large share of sunlight into usable power, making it effective during clear and moderately bright conditions.
• Portable Design: Folds to roughly 11x6x1.4 in and weighs about 1.5 lbs, which makes it easy to stash in a backpack for day hikes or car camping.
• Rugged Surface: A polymer front resists rain, fog and wear better than conventional panels, so it tolerates outdoor use in mixed weather.
• Safety Charging: Built-in intelligent safety features help protect connected devices while charging in sunlight.

Who It's For

The BigBlue 28W is best for outdoor enthusiasts who need a lightweight solar panel to charge phones, GPS units and power banks while on the trail or at a campsite; its foldable size and triple-port output suit small-group use and emergency kits. It also fits drivers or boaters who can lay it flat in direct sun for intermittent charging.

People who should look elsewhere include anyone needing onboard energy storage (this panel does not include a battery) and users who expect consistent indoor charging through a window or on cloudy days; actual output varies with angle, irradiance and device demands.

Pros & Cons

Pros

• High conversion efficiency provides strong power output for a compact panel.
• Triple-port layout supports simultaneous charging of multiple devices.
• Lightweight, foldable form factor is convenient for backpacks and emergency kits.
• Durable polymer surface and IP44 resistance help it withstand outdoor exposure.

Cons

• Does not store energy, so devices must be connected in direct sunlight to charge.
• USB junction box is not waterproof, so it needs protection in heavy rain.

Specifications

Brand	BigBlue
Output Power	28W
Ports	Dual USB-C and one USB-A (max 5V/3A per port, total up to 5V/4.8A)
Efficiency	About 25.4% sunlight conversion
Folded Size	Approx 11 x 6 x 1.4 in
Weight	About 1.5 lbs
Ingress Protection	IP44 (panel surface); junction box not waterproof

Our Verdict

The BigBlue 28W Solar Panel Charger is a practical choice for hikers and campers who need a lightweight, efficient panel to charge phones and small electronics directly in sunlight; it offers good value for the portability, triple-port charging and durable front surface, but buyers should pair it with a power bank if they need stored energy or expect to charge through glass or in low light.

Frequently Asked Questions

Can the panel store power?
The panel cannot store electricity; it must be connected to devices or a battery in direct sunlight to provide charge.

How many devices can it charge at once?
It can charge up to three devices simultaneously via two USB-C ports and one USB-A port, sharing a combined output up to about 5V/4.8A.

Is it waterproof?
The front panel is water resistant (IP44) thanks to a polymer surface, but the USB junction box is not waterproof and should be protected from heavy rain.