#1 on this list
15W ETFE Foldable Solar Charger
SunJack
The SunJack 15W gave the best measured output for its weight in the independent data we found, and it has both USB-C and USB-A. **Highlights** - Strong measured USB-C output - USB-C and USB-A - IP67 USB ports per maker - In stock at SunJack when checked **Watch-outs** - No built-in battery - 1.4 lb panel only per maker Research only: Wild10 has not field tested this model. Specifications come from the maker page; any measured figure is credited to the outlet that measured it.
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#2 on this list
E10 10W USB Solar Charger
FlexSolar
The FlexSolar E10 is the lightest panel in this list, aimed at keeping a power bank topped up rather than charging fast. **Highlights** - Lightest panel here - Low cost - IP67 controller box per maker **Watch-outs** - USB-A only - Conflicting weight figures - No independent measured output for this model Research only: Wild10 has not field tested this model. Specifications come from the maker page; any measured figure is credited to the outlet that measured it.
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- How we assessed it
- Specification researched
Specs side by side
| Spec | 15W ETFE Foldable Solar Charger | E10 10W USB Solar Charger |
|---|---|---|
| Rated panel power | 15 W | 10 W |
| Ports | 1 x USB-C, 1 x USB-A (5V/3A each), 15 W max combined | 1 x USB-A, 5V/2A |
| Built-in battery | None | None |
| Weight | 1.4 lb (0.64 kg) panel only, per maker | 200 g panel per maker (the same page also lists 300 g net) |
| Folded | 7.8 x 8.82 x 1 in | 193 x 224 x 17 mm |
| Measured output | 10.1 W USB-C sun, 4.8 W USB-C cloud (Outdoor Life) | — |
| Wild10 evidence | Research only, not field tested | Research only, not field tested |
| Best for | Best balance for backpacking | Lowest pack weight |
| Water rating | — | IP67 controller box per maker |
What our reviewers liked and didn't
15W ETFE Foldable Solar Charger
- Strong measured USB-C output
- USB-C and USB-A
- IP67 USB ports per maker
- In stock at SunJack when checked
- No built-in battery
- 1.4 lb panel only per maker
E10 10W USB Solar Charger
- Lightest panel here
- Low cost
- IP67 controller box per maker
- USB-A only
- Conflicting weight figures
- No independent measured output for this model
Prices change constantly — the figure shown is the last verified catalog price, and the buy buttons always go to the current listing.