USB panels that charge a phone in the sun, and store nothing
Five folding USB solar chargers from 28 to 30 W. None stores energy; each charges what is plugged in while the sun shines. Three things separate them. Ports and speed: four supply standard 5 V USB, while MARBERO adds USB-C at 9 and 12 V, QC3.0 and a DC output for small power stations. Weather: Ecosonique is rated IP67 with an ETFE surface; the BigBlue panels are IP44. Cells: BigBlue quotes 25.4%, ELECOM uses SunPower Maxeon cells. Weight runs from 1.3 lb (BigBlue with ammeter) to 2.4 lb (MARBERO), price from $45.99 (Ecosonique) to $129.99 (ELECOM). Two practical rules come from the listings themselves: keep the phone in the shade, because its thermal protection stops charging in direct sun, and do not use the panel behind a window. Prices were read on Amazon.com on November 2, 2026.
30 W foldable solar charger with a DC output (16.5 V/1.81 A) for power stations, plus USB-C PD (up to 12 V/1.67 A) and QC3.0 USB-A (up to 12 V/2 A), 21.5–23.5% cells, IP65, 2.4 lb, 12-month warranty
A 30 W foldable charger with a DC output for small power stations as well as fast USB-C and QC3.0 ports, with published sun and cloud output, for $59.99.
Best for: Small power stations and phones on the same trip
≈ $60
30 W tri-fold USB solar charger, ETFE laminate, 23.5% monocrystalline cells, USB-C and USB-A at 5 V/3 A each, IP67, 1.7 lb, 12-month warranty
A 30 W tri-fold ETFE solar charger rated IP67, the toughest here, with USB-C and USB-A, at 1.7 lb and $45.99, the cheapest USB charger on this shelf.
Best for: Rainy-climate hiking and budget emergency kits
≈ $46
28 W foldable USB solar charger with a digital ammeter, 25.4% cells, USB-A 5 V/2.4 A and USB-C 3 A, PET fabric, IP44, 595 g (1.3 lb), no internal battery, 18-month warranty
A 28 W solar charger with a built-in ammeter that shows live output, 25.4% cells and an 18-month warranty, at 1.3 lb and $77.96.
Best for: Hikers who want to see whether the angle is right, and buyers who value the warranty
≈ $78
28 W foldable USB solar charger, N-type cells at 25.4% with no front metal lines, two USB-C and one USB-A at 5 V/3 A each (4.8 A combined), IP44, 1.5 lb, folds to 11 × 6 × 1.4 in, no internal battery
A 28 W foldable USB solar charger with N-type cells at 25.4%, two USB-C and one USB-A port, IP44, at 1.5 lb. It charges devices directly; it stores nothing.
Best for: Backpacking and emergency kits for phones, power banks and GPS units
≈ $80
28 W four-panel USB solar charger with SunPower Maxeon cells, two USB-A ports, LED current checker, two adjustable stands, water-resistant ripstop nylon, 771 g (1.7 lb), iF Design Gold Award, 1-year warranty
A 28 W four-panel charger with SunPower Maxeon cells, a current checker and built-in stands, in ripstop nylon. Award-winning design, USB-A only, $129.99.
Best for: Campers who want a well-made panel that stands on its own
≈ $130
The only one here with a DC output and fast-charging USB.
A built-in ammeter shows the current in real time.
Its own thermal protection. BigBlue advises keeping the phone in the shade while the panel stays in the sun.
Only the MARBERO, through its 16.5 V DC output, among the panels on this shelf.
BigBlue says not to use its panel behind a window or windscreen.
MARBERO claims 15–20 W of 30; heavy cloud cuts output far more.
BigBlue’s dual USB-C model includes a 50 cm USB-C cable; MARBERO a DC cable and adapters.
A solar power bank has a battery and a tiny panel; these panels are larger and have no battery. See the solar power bank shelf.
Pick by what you charge. MARBERO for phones plus a small station, Ecosonique for weather, BigBlue for light weight and efficient cells, ELECOM for design.
A column is kept only if four units in five publish its figure. Otherwise it would compare cells left blank.
| Model | Price | Cells | Rated power | Weight | Outputs |
|---|---|---|---|---|---|
| Ecosonique 30W Foldable Solar Charger | $46 | Monocrystalline, 23.5% | 30 W | 1.7 lb | USB-C and USB-A, 5 V/3 A each |
| MARBERO 30W Solar Panel Charger (ED-30) | $60 | 21.5–23.5% efficiency | 30 W | 2.4 lb (1.3 kg in the spec table) | — |
| BigBlue 28W Solar Charger with Ammeter (B401E) | $78 | 25.4% efficiency, no front metal lines | 28 W | 595 g (1.3 lb) | USB-A up to 5 V/2.4 A, USB-C up to 3 A |
| BigBlue 28W Solar Charger (dual USB-C) | $80 | N-type, 25.4%, shadow-free front with no metal lines | 28 W | 1.5 lb | 2 × USB-C and 1 × USB-A, 5 V/3 A each, 5 V/4.8 A combined |
| ELECOM NESTOUT 28W (MPA-NEST-S014OV) | $130 | SunPower Maxeon | 28 W | 771 g (1.7 lb) | 2 × USB-A, 5 V |
Specifications: manufacturer sheets for portable power gear and the matching Amazon product pages. Prices and availability: Keepa. Every figure in this table names its source.
Most recent revision in this category: November 2, 2026.
A price quoted in the text of a PowerVerdict page dates from the day that page was written; the live figure beside each product is fetched while you read and replaces it.
