#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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#3 on this list
SolarPowa 20 TOPCon
BigBlue
The SolarPowa 20 TOPCon gives you two ports and 20 W rated for a group, at under 1.4 lb. **Highlights** - Two ports - Lighter than the SunJack 15W per maker - IP68 excluding junction box **Watch-outs** - No independent measurements - 5V output only 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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Specs side by side
| Spec | E10 10W USB Solar Charger | SolarPowa 20 TOPCon |
|---|---|---|
| Rated panel power | 10 W | 20 W |
| Ports | 1 x USB-A, 5V/2A | 1 x USB-C, 1 x USB-A (5V/3A each), 5V/4.2A total |
| Built-in battery | None | None |
| Weight | 200 g panel per maker (the same page also lists 300 g net) | 0.6 kg (1.32 lb) per maker |
| Folded | 193 x 224 x 17 mm | — |
| Water rating | IP67 controller box per maker | IP68 excluding junction box per maker |
| Wild10 evidence | Research only, not field tested | Research only, not field tested |
| Best for | Lowest pack weight | Group charging on a budget |
What our reviewers liked and didn't
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
SolarPowa 20 TOPCon
- Two ports
- Lighter than the SunJack 15W per maker
- IP68 excluding junction box
- No independent measurements
- 5V output only
Prices change constantly — the figure shown is the last verified catalog price, and the buy buttons always go to the current listing.