BigBlue 28W Solar Panel Charger with Dual USB-C and USB-A, Portable Solar Phone Charger for Camping, Hiking, Backpacking…
Best for
Best overall
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Current price
$58.39
Updated Jun 23, 2026 · 1 min read
Sources behind this verdict
10 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, the BigBlue 28W is the most validated small solar charger in this category. outdoorgearlab.com, a high-trust testing outlet, called it one of the most efficient panels it tested in both direct and indirect charging, and verified-purchase volume is enormous: a 4.4 average across roughly 9,800 Amazon ratings. Specialist communities echo that: r/SolarUK and r/bicycletouring users report it 'works a charm' under direct sunlight and survives being strapped to panniers, and a r/preppers field-testing thread named it a top pick among large folding chargers.
What reviewers liked
- High-trust testing outlet (outdoorgearlab.com) ranked it among the most efficient compact chargers tested
- Largest verified-purchase sample in the pool (~9,800 Amazon ratings at 4.4 stars)
- Multiple USB outputs and an integrated ammeter praised across prepper and bike-touring communities
- Light enough to clip to a pack, per backpacking and cycling reviewers
Where it falls short
- Output is for phones, power banks, and small USB devices only, not power stations or appliances
- Community reviewers stress it only performs well in direct sun, with steep drop-off under cloud
- Some prepper threads note newer 36W variants add USB-C at a similar price, dating the 28W's port selection
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Across the reviewers we read, the BigBlue 28W is the most validated small solar charger in this category. outdoorgearlab.com, a high-trust testing outlet, called it one of the most efficient panels it tested in both direct and indirect charging, and verified-purchase volume is enormous: a 4.4 average across roughly 9,800 Amazon ratings. Specialist communities echo that: r/SolarUK and r/bicycletouring users report it 'works a charm' under direct sunlight and survives being strapped to panniers, and a r/preppers field-testing thread named it a top pick among large folding chargers.
- Advanced Performance
- BigBlue 28W portable solar charger provides 20% more power from every ray, thanks to shadow-free surface design (No metal lines on the front panel). Engineered heat resistance and advanced N-type solar cells offer superior Low-Light efficiency and extending operational longevity
- Upgraded Triple-Port
- Dual USB-C and one USB-A ports deliver a maximum output of 5V/3A each, collectively achieving 5V/4.8A. This solar panel charger empowers simultaneous multi-device charging. Please note that the portable solar panel can't store the electricity and must be used in direct sunlight while connected to your devices
- High-Efficiency & IP44 Waterproof
- 28W USB solar panel phone charger converts 25.4% sunlight into free energy – industry-leading efficiency. Our most durable design with special polymer surface resists rain, fog, and wear better than conventional panels. Note: USB junction box is not waterproof
- Ultra-Portable Emergency Solar Charger
- Engineered for outdoor camping/hiking and emergency power supply, BigBlue folding solar panel charger folds to just 11x6x1.4 inches and weighs only 1.5 lbs—compact enough for tight backpack. Unfold, Plug, Power, easy to setup, it is critical for hurricane preparedness kits
- Universal Power on the Go
- Charge your smartphones, power banks, GPS, flashlight and small electronics seamlessly with BigBlue's lightweight solar panel charger. Actual output fluctuates with solar irradiance, angular orientation, connected device specifications, ambient temperature etc. Equipped with Intelligent Safety Charging for fast, 100% safe energy in sunlight. (Cable for Apple devices is not included.)
- Package & Support
- You will get a BigBlue 28W Solar Panel Charger, a 50cm USB-C to USB-C Cable, Carabiners, a User Manual and our friendly customer service. Note: we don't suggest you use this foldable solar panel inside of a window or windscreen. The LED light glow solid blue when charging properly - your sign to just relax and let it work
- Note
- This solar panel charger is designed for direct charging and does not have an internal battery to store electricity. Optimal charging speed requires direct sunlight, as insufficient sunlight will result in unstable or reduced power output. Its power output is not sufficient for charging laptops or large power stations
I use the BigBlue 28 watt solar charger with an ammeter and two USB ports, and it works a charm provided you can get it under direct sunlight.
Best large: BigBlue 3 28W. Summary: We ran tests that measured sunlight and power output every 10 seconds, used a FLIR camera to check panel ...
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“BigBlue 28W Solar Charger Review” · YouTube
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