The Renogy Black Division 100W Flexible is the better portable solar panel overall, rated 4.3 to 3.7. The Renogy Black Division 100W Flexible leads on value and portability. The Lion Energy 100W LW 12V Folding wins on features. The Renogy Black Division 100W Flexible costs $93.91 less ($125.09 vs $219).
A 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 $125.09Best 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 $219Prices 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.
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 Black Division 100W Flexible | Lion Energy 100W LW 12V Folding |
|---|---|---|
| Overall rating | 4.3/5 | 3.7/5 |
| Value 30% | 98 $1.25 per rated watt | 65 $2.19 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 | 92 not yet tested; estimated 88% of rated watts from the median of the 11 tested panels |
| Portability 15% | 100 18.9 W per lb (5.3 lb (2.4 kg)) | 48 11.8 W per lb (8.5 lb (3.9 kg)) |
| Durability 15% | 100 IP67, 5-year warranty | 50 IP rating and warranty not published (neutral score used) |
| Efficiency 10% | 0 15.7% claimed efficiency | 50 efficiency not published (neutral score used) |
| Features 10% | 0 no kickstand, USB or bifacial cells | 55 built-in kickstand, series/parallel |
| Renogy Black Division 100W Flexible | Lion Energy 100W LW 12V Folding | |
|---|---|---|
| Output | ||
| Rated power | 100 W | 100 W |
| Tested output | Not tested (estimated 91%) | Not tested (estimated 88%) |
| Efficiency | 15.7% (module efficiency per Renogy's spec table; the Amazon listing quotes 22%) | - |
| Cells | Monocrystalline (half-cut PERC) | Monocrystalline |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 23.5 V | 20.5 V |
| Voltage at max power (Vmp) | 19.4 V | 17.1 V |
| Short-circuit current (Isc) | 5.5 A | 6.1 A |
| Current at max power (Imp) | 5.2 A | 5.8 A |
| Series / parallel | - | Yes |
| Connections | ||
| USB ports | None | - |
| Build | ||
| Weight | 5.3 lb (2.4 kg) | 8.5 lb (3.9 kg) |
| Flexible | Yes, bends up to 240° | - |
| Dimensions | 43.0 x 22.9 x 0.8 in (1093.0 x 582.0 x 20.5 mm) | - |
| Kickstand | No | Yes |
| Water resistance | IP67 | - |
| Warranty | 5 years | - |
| Output warranty | 5-year output warranty | Lion rates it for 20 years of solar output performance |
| Released | 2025-09 | 2024-04 |
