The Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel is the better portable solar panel overall, rated 4.5 to 4.3. The Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel leads on durability, efficiency and portability. The Ecosonique 100W Portable Solar Panel (UC-100A) wins on features and value. The Ecosonique 100W Portable Solar Panel (UC-100A) costs $64 less ($85.99 vs $149.99).
For curved roofs with vents, racks or antennas that shade part of the panel during the day. With clear sun on an open roof, Renogy’s standard 100 W flexible panel costs less.
Amazon $149.99 Renogy $172.99A cheap, light 100 W panel for small power stations and direct USB charging on camping and hiking trips. Buyers who want a longer warranty or verified output should look elsewhere.
Amazon $85.99Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Each factor is scored 0-100 against the same fixed reference points for every small portable solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel | Ecosonique 100W Portable Solar Panel (UC-100A) |
|---|---|---|
| Overall rating | 4.5/5 | 4.3/5 |
| Value 30% | 89 $1.50 per rated watt | 100 $0.86 per rated watt |
| Tested output 20% | 91 not yet tested; estimated 87% of rated watts from 1 test of Renogy panels and the median of the 10 tested panels | 89 not yet tested; estimated 87% of rated watts from the median of the 10 tested panels |
| Portability 15% | 100 23.9 W per lb (4.2 lb (1.9 kg)) | 88 16.5 W per lb (6.1 lb (2.8 kg)) |
| Durability 15% | 100 IP68, 3-year warranty | 36 IP65, 1-year warranty |
| Efficiency 10% | 100 25% claimed efficiency | 75 23.5% claimed efficiency |
| Features 10% | 0 no kickstand, USB or bifacial cells | 55 built-in kickstand, USB output |
| Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel | Ecosonique 100W Portable Solar Panel (UC-100A) | |
|---|---|---|
| Output | ||
| Rated power | 100 W | 100 W |
| Tested output | Not tested (estimated 87%) | Not tested (estimated 87%) |
| Efficiency | 25% (cell efficiency ("up to 25%")) | 23.5% (cell efficiency per the Amazon listing's description; its spec table says 24%) |
| Cells | Monocrystalline (N-type TOPCon, cell-level bypass diodes (ShadowFlux)) | Monocrystalline |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 33.6 V | - |
| Voltage at max power (Vmp) | 28.8 V | 20 V |
| Short-circuit current (Isc) | 3.7 A | - |
| Current at max power (Imp) | 3.5 A | 5 A |
| Connections | ||
| Cables included | - | 3 m DC5521 male-to-male cable, 0.5 m DC5521 to XT60 and Anderson cable, DC7909, DC5525 and DC35135 connectors |
| USB ports | None | 1x USB-C PD3.0 (max 45W), 1x USB-A QC3.0 (max 24W), plus a 20V DC output |
| Build | ||
| Weight | 4.2 lb (1.9 kg) | 6.1 lb (2.8 kg) |
| Flexible | Yes, bends up to 270° | - |
| Dimensions | 37.09 x 24.13 x 0.10 in | - |
| Folded size | - | 15.68 x 10.44 x 2.96 in |
| Unfolded size | - | 68.28 x 15.68 x 0.99 in |
| Kickstand | No | Yes |
| Water resistance | IP68 | IP65 |
| Warranty | 3 years | 1 years |
| Output warranty | 3-year power output warranty | - |
