The Renogy 100W 12V Flexible is the better portable solar panel overall, rated 4.3 to 4.2. The Renogy 100W 12V Flexible leads on portability and durability. The ZOUPW 100W Portable (F100W) wins on efficiency and features. The ZOUPW 100W Portable (F100W) costs $4 less ($105.99 vs $109.99).
The default pick for a stealthy 100 W on a curved van, RV or boat roof where a framed panel will not fit. If the roof is flat and can take the weight, a rigid panel lasts longer for less money.
Amazon $109.99A plug-and-play 100 W panel for owners of small and mid-size power stations who want every common adapter in the box and USB ports for direct charging. Hikers should look at lighter panels.
Amazon $105.99Prices 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 100W 12V Flexible | ZOUPW 100W Portable (F100W) |
|---|---|---|
| Overall rating | 4.3/5 | 4.2/5 |
| Value 30% | 100 $1.10 per rated watt | 100 $1.06 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 | 100 not yet tested; estimated 92% of rated watts from 1 test of ZOUPW panels and the median of the 11 tested panels |
| Portability 15% | 100 18.9 W per lb (5.3 lb (2.4 kg)) | 38 10.5 W per lb (9.5 lb (4.3 kg)) |
| Durability 15% | 100 IP67, 5-year warranty | 60 IP67, 1-year warranty |
| Efficiency 10% | 0 15.7% claimed efficiency | 75 23.5% claimed efficiency |
| Features 10% | 0 no kickstand, USB or bifacial cells | 55 built-in kickstand, USB output |
| Renogy 100W 12V Flexible | ZOUPW 100W Portable (F100W) | |
|---|---|---|
| Output | ||
| Rated power | 100 W | 100 W |
| Tested output | Not tested (estimated 91%) | Not tested (estimated 92%) |
| Efficiency | 15.7% (module efficiency per Renogy's spec table; the Amazon listing quotes 22%) | 23.5% (cell efficiency per ZOUPW's spec table) |
| Cells | Monocrystalline (9BB) | Monocrystalline |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 24.4 V | 24.3 V |
| Voltage at max power (Vmp) | 20.7 V | 20.2 V |
| Short-circuit current (Isc) | 5.2 A | 5.2 A |
| Current at max power (Imp) | 4.8 A | 5 A |
| Connections | ||
| Output connector | MC4 | - |
| Cables included | - | 10 ft 5-in-1 solar extension cable (DC8020, XT60, Anderson, DC7909, DC5521) |
| USB ports | None | On the built-in controller: 1x USB-C (up to 15V/3A), 1x USB-A QC3.0 (up to 12V/1.5A), 1x USB-A 5V/3A; the controller pocket is not waterproof |
| Build | ||
| Weight | 5.3 lb (2.4 kg) | 9.5 lb (4.3 kg) |
| Flexible | Yes, bends up to 240° | - |
| Dimensions | 43.0 x 22.9 x 0.1 in | - |
| Folded size | - | 24.13 x 21.06 x 1.77 in (613 x 535 x 45 mm) |
| Unfolded size | - | 48.43 x 21.06 x 0.98 in (1230 x 535 x 25 mm) |
| Kickstand | No | Yes |
| Water resistance | IP67 | IP67 |
| Warranty | 5 years | 1 years |
| Output warranty | at least 90% output for 5 years | - |
| Released | 2025-09 | 2025-08 |
