The ZOUPW 100W Lightweight Foldable Solar Panel (ZOUPW-QZ100W) is the better portable solar panel overall, rated 4.4 to 4.3. The ZOUPW 100W Lightweight Foldable Solar Panel (ZOUPW-QZ100W) leads on durability and efficiency. The Ecosonique 100W Portable Solar Panel (UC-100A) wins on portability. The Ecosonique 100W Portable Solar Panel (UC-100A) costs $14 less ($85.99 vs $99.99).
A plug-and-play 100 W panel for owners of small power stations who want every common adapter in the box and USB ports for direct charging. It is about 1.5 lb lighter than ZOUPW’s older F100W.
Amazon $99.99 ZOUPW $109.99A 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 | ZOUPW 100W Lightweight Foldable Solar Panel (ZOUPW-QZ100W) | Ecosonique 100W Portable Solar Panel (UC-100A) |
|---|---|---|
| Overall rating | 4.4/5 | 4.3/5 |
| Value 30% | 100 $1.00 per rated watt | 100 $0.86 per rated watt |
| Tested output 20% | 100 not yet tested; estimated 91% of rated watts from 1 test of ZOUPW 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% | 54 12.5 W per lb (8 lb (3.6 kg)) | 88 16.5 W per lb (6.1 lb (2.8 kg)) |
| Durability 15% | 60 IP67, 1-year warranty | 36 IP65, 1-year warranty |
| Efficiency 10% | 100 25% claimed efficiency | 75 23.5% claimed efficiency |
| Features 10% | 55 built-in kickstand, USB output | 55 built-in kickstand, USB output |
| ZOUPW 100W Lightweight Foldable Solar Panel (ZOUPW-QZ100W) | Ecosonique 100W Portable Solar Panel (UC-100A) | |
|---|---|---|
| Output | ||
| Rated power | 100 W | 100 W |
| Tested output | Not tested (estimated 91%) | Not tested (estimated 87%) |
| Efficiency | 25% (cell efficiency per ZOUPW) | 23.5% (cell efficiency per the Amazon listing's description; its spec table says 24%) |
| Cells | Monocrystalline (N-type, 16BB, 182 mm cells) | Monocrystalline |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 23.8 V | - |
| Voltage at max power (Vmp) | 19.8 V | 20 V |
| Short-circuit current (Isc) | 5.3 A | - |
| Current at max power (Imp) | 5 A | 5 A |
| Connections | ||
| Output connector | MC4 | - |
| Cables included | 10 ft MC4 extension cable with XT60, Anderson, DC7909 and DC5521 ends plus a DC8020 adapter, 10-in-1 DC5521 adapter set | 3 m DC5521 male-to-male cable, 0.5 m DC5521 to XT60 and Anderson cable, DC7909, DC5525 and DC35135 connectors |
| USB ports | On the built-in controller: 1x USB-C (5/9/12/15 V at 3 A; ZOUPW's site also lists 20 V/2.25 A, 45 W max), 1x USB-A 5V/3A, 1x USB-A up to 12V/1.5A; the controller is not water-resistant | 1x USB-C PD3.0 (max 45W), 1x USB-A QC3.0 (max 24W), plus a 20V DC output |
| Build | ||
| Weight | 8 lb (3.6 kg) | 6.1 lb (2.8 kg) |
| Folded size | 23.38 x 23.22 x 1.77 in (594 x 590 x 45 mm) | 15.68 x 10.44 x 2.96 in |
| Unfolded size | 46.85 x 23.23 x 0.98 in (1190 x 590 x 25 mm) | 68.28 x 15.68 x 0.99 in |
| Kickstand | Yes | Yes |
| Water resistance | IP67 | IP65 |
| Warranty | 1 years | 1 years |
