Renogy Flex ShadowFlux 100W
#2 in SmallFull review
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 $172.99$172.99
The Renogy Flex ShadowFlux 100W is the better portable solar panel overall, rated 4.5 to 4.3. The Renogy Flex ShadowFlux 100W leads on durability and efficiency. The FlexSolar S60 60W wins on value and features. The FlexSolar S60 60W costs $110 less ($62.99 vs $172.99).
FlexSolar S60 60W
#7 in SmallFull review
A light, packable panel for campers who mainly charge phones, power banks and small power stations, and it did well in independent testing. Anyone filling a larger station should step up to 100 W or more.
Amazon $62.99$62.99
Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Renogy Flex ShadowFlux 100W for durability (IP68, 3-year warranty vs IP67) and efficiency (25% claimed efficiency vs 24% claimed efficiency).
- Choose the FlexSolar S60 60W for value ($1.05 per rated watt vs $1.73 per rated watt) and features (USB output vs no kickstand, USB or bifacial cells).
Scores side by side
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 | FlexSolar S60 60W |
|---|---|---|
| Overall rating | 4.5/5 | 4.3/5 |
| Value 30% | 81 $1.73 per rated watt | 100 $1.05 per rated watt |
| Tested output 20% | 100 not yet tested; estimated 91% of rated watts from 2 tests of Renogy panels and the median of the 11 tested panels | 78 best measured 83% of rated watts (1 test) |
| Portability 15% | 100 23.9 W per lb (4.2 lb (1.9 kg)) | 100 23.1 W per lb (2.6 lb (1.2 kg)) |
| Durability 15% | 100 IP68, 3-year warranty | 60 IP67 |
| Efficiency 10% | 100 25% claimed efficiency | 83 24% claimed efficiency |
| Features 10% | 0 no kickstand, USB or bifacial cells | 20 USB output |
Independent output tests
Renogy Flex ShadowFlux 100W
No independent test published yet.
FlexSolar S60 60W
| Tested by | Measured peak | Of rated | Conditions |
|---|---|---|---|
| OutdoorGearLab | 50 W | 83% | OutdoorGearLab says the panel delivered over 50 W on a few occasions when charging a small power station over DC, propped toward the sun on clear summer days in Idaho; over USB-C it averaged more than 5,100 mAh per hour of midday July sun. Review published August 2026. |
Specifications
| Renogy Flex ShadowFlux 100W | FlexSolar S60 60W | |
|---|---|---|
| Output | ||
| Rated power | 100 W | 60 W |
| Tested output | Not tested (estimated 91%) | 50 W (83%) |
| Efficiency | 25% (cell efficiency ("up to 25%")) | 24% (Amazon listing and FlexSolar both claim up to 24% conversion efficiency without saying cell or module) |
| 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 | - |
| Short-circuit current (Isc) | 3.7 A | - |
| Current at max power (Imp) | 3.5 A | - |
| Connections | ||
| Cables included | - | Solar charging cable with XT60, Anderson, DC7909 and DC5521 ends |
| USB ports | None | 1x USB-C PD3.0 up to 40W, 1x USB-A QC3.0 up to 18W per the Amazon listing; DC output up to 60W at 20-28V. The junction box is not waterproof |
| Build | ||
| Weight | 4.2 lb (1.9 kg) | 2.6 lb (1.2 kg) |
| Flexible | Yes, bends up to 270° | - |
| Dimensions | 37.09 x 24.13 x 0.10 in | - |
| Folded size | - | 12.0 x 9.8 x 0.7 in |
| Unfolded size | - | 54.8 x 12 x 1 in |
| Folding sections | - | 6 |
| Kickstand | No | No |
| Water resistance | IP68 | IP67 |
| Warranty | 3 years | - |
| Output warranty | 3-year power output warranty | - |
| Released | 2026-09 | 2025-07 |