A good pick for hikers and car campers who want 100 W-class solar that packs small and weighs about 4 lb. Anyone charging a bigger power station should look at a heavier panel with a stand and published electrical specs.
Price checked October 21, 2026. As an Amazon Associate we earn from qualifying purchases.
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
The most power independent reviewers measured from the panel in real sun. Heat, haze, sun angle and the device being charged all cut output, so 70-85% of the rated watts is a normal real-world result.
| Tested by | Measured peak | Of rated | Conditions |
|---|---|---|---|
| OutdoorGearLab | 70 W | 70% | OutdoorGearLab’s measured-watts figure from its charging test (70 W generated in one hour); panel lay flat, exact sun conditions not given |
| Output | |
|---|---|
| Rated power | 100 W |
| Tested output | 70 W (70%) |
| Efficiency | 23% (Amazon listing claims 23%+ conversion efficiency without saying cell or module; FlexSolar's own page gives no figure) |
| Cells | Monocrystalline |
| Bifacial | No |
| Connections | |
| Cables included | 2 m 4-in-1 DC adapter cable (Anderson, XT60, DC7909, DC5521) |
| Build | |
| Weight | 4.1 lb (1.9 kg) |
| Folded size | 12.99 x 10.43 x 2.17 in (330 x 265 x 55 mm) |
| Unfolded size | 45.47 x 26.18 x 0.59 in (1155 x 665 x 15 mm) |
| Folding sections | 10 |
| Kickstand | No |
| Water resistance | IP67 |
For tightly curved or irregular surfaces such as boat biminis and teardrop roofs, where silicon flexible panels would crack. On a gently curved roof, a silicon flexible panel gives more watts per dollar.
Amazon $209.99 BougeRV $249.99For hikers and campers with a mid-size Jackery or other 30 V-capable station who want a 100 W panel light enough to carry all day. Check your station’s solar input range before buying.
Amazon $249 Jackery $249Best suited to Lion Energy Summit or UT 1300 owners who want a matching, rugged 100 W briefcase panel. Owners of other stations can get the same watts for much less.
Amazon $219 Lion Energy $219Compare the FlexSolar S100 100W Foldable Portable Solar Panel with any other portable solar panel →
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