The Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel is the better portable solar panel overall, rated 4.5 to 4.2. The Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel leads on efficiency. The Renogy Black Division 100W Lightweight Flexible Solar Panel (RSP100DL-36) wins on value. The Renogy Black Division 100W Lightweight Flexible Solar Panel (RSP100DL-36) costs $45.50 less ($104.49 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 low-profile 100 W panel for curved or weight-limited van, RV and boat roofs, especially where an all-black look matters. On a flat roof that can take the weight, a rigid panel lasts longer for less money.
Amazon $104.49 Renogy $139.99Prices 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 | Renogy Black Division 100W Lightweight Flexible Solar Panel (RSP100DL-36) |
|---|---|---|
| Overall rating | 4.5/5 | 4.2/5 |
| Value 30% | 89 $1.50 per rated watt | 100 $1.04 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 | 91 not yet tested; estimated 87% of rated watts from 1 test of Renogy panels and the median of the 10 tested panels |
| Portability 15% | 100 23.9 W per lb (4.2 lb (1.9 kg)) | 100 18.9 W per lb (5.3 lb (2.4 kg)) |
| Durability 15% | 100 IP68, 3-year warranty | 100 IP67, 5-year warranty |
| Efficiency 10% | 100 25% claimed efficiency | 0 15.7% claimed efficiency |
| Features 10% | 0 no kickstand, USB or bifacial cells | 0 no kickstand, USB or bifacial cells |
| Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel | Renogy Black Division 100W Lightweight Flexible Solar Panel (RSP100DL-36) | |
|---|---|---|
| Output | ||
| Rated power | 100 W | 100 W |
| Tested output | Not tested (estimated 87%) | Not tested (estimated 87%) |
| Efficiency | 25% (cell efficiency ("up to 25%")) | 15.7% (module efficiency per Renogy's spec table; the Amazon listing quotes 22%) |
| Cells | Monocrystalline (N-type TOPCon, cell-level bypass diodes (ShadowFlux)) | Monocrystalline (half-cut PERC) |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 33.6 V | 23.5 V |
| Voltage at max power (Vmp) | 28.8 V | 19.4 V |
| Short-circuit current (Isc) | 3.7 A | 5.5 A |
| Current at max power (Imp) | 3.5 A | 5.2 A |
| Connections | ||
| USB ports | None | None |
| Build | ||
| Weight | 4.2 lb (1.9 kg) | 5.3 lb (2.4 kg) |
| Flexible | Yes, bends up to 270° | Yes, bends up to 240° |
| Dimensions | 37.09 x 24.13 x 0.10 in | 43.0 x 22.9 x 0.8 in (1093.0 x 582.0 x 20.5 mm) |
| Kickstand | No | No |
| Water resistance | IP68 | IP67 |
| Warranty | 3 years | 5 years |
| Output warranty | 3-year power output warranty | 5-year output warranty |
