The Ecosonique 100W (UC-100A) is the better portable solar panel overall, rated 4.3 to 4.1. The Ecosonique 100W (UC-100A) leads on portability. The Ecosonique 100W (UC-100A) costs $26.99 less ($82.99 vs $109.98).
A 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 $82.99A dependable, low-voltage 100 W briefcase panel for small power stations, with adapters for most older barrel and Anderson inputs. Owners of XT60 stations should budget for an adapter.
Amazon $109.98Prices 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 | Ecosonique 100W (UC-100A) | GRECELL 100W Portable (SP-100) |
|---|---|---|
| Overall rating | 4.3/5 | 4.1/5 |
| Value 30% | 100 $0.83 per rated watt | 100 $1.10 per rated watt |
| Tested output 20% | 92 not yet tested; estimated 88% of rated watts from the median of the 11 tested panels | 100 best measured 100% of rated watts (1 test) |
| Portability 15% | 88 16.5 W per lb (6.1 lb (2.8 kg)) | 35 10.2 W per lb (9.8 lb (4.5 kg)) |
| Durability 15% | 36 IP65, 1-year warranty | 50 IP rating and warranty not published (neutral score used) |
| Efficiency 10% | 75 23.5% claimed efficiency | 75 23.5% claimed efficiency |
| Features 10% | 55 built-in kickstand, USB output | 55 built-in kickstand, series/parallel |
No independent test published yet.
| Tested by | Measured peak | Of rated | Conditions |
|---|---|---|---|
| The Gadgeteer | 100 W | 100% | Reviewer saw the wattage ‘jump right to 100+ watts’ and hold there on a winter day, kickstands angled for the low sun, charging a GRECELL T-500 power station; metering method not stated. Review published December 2022. |
| Ecosonique 100W (UC-100A) | GRECELL 100W Portable (SP-100) | |
|---|---|---|
| Output | ||
| Rated power | 100 W | 100 W |
| Tested output | Not tested (estimated 88%) | 100 W (100%) |
| Efficiency | 23.5% (cell efficiency per the Amazon listing's description; its spec table says 24%) | 23.5% (cell efficiency per GRECELL's SP-100 spec table (grecell.com product feed)) |
| Cells | Monocrystalline | Monocrystalline |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | - | 23.9 V |
| Voltage at max power (Vmp) | 20 V | 20 V |
| Short-circuit current (Isc) | - | 5.2 A |
| Current at max power (Imp) | 5 A | 5 A |
| Series / parallel | - | Yes |
| Connections | ||
| Output connector | - | MC4 |
| Cables included | 3 m DC5521 male-to-male cable, 0.5 m DC5521 to XT60 and Anderson cable, DC7909, DC5525 and DC35135 connectors | MC4 to Anderson cable, MC4 to DC5521 cable, DC5521 to DC5525 adapter, DC5521 to DC7909 (8 mm) adapter, DC5521 to DC3515 adapter |
| USB ports | 1x USB-C PD3.0 (max 45W), 1x USB-A QC3.0 (max 24W), plus a 20V DC output | - |
| Build | ||
| Weight | 6.1 lb (2.8 kg) | 9.8 lb (4.5 kg) |
| Folded size | 15.68 x 10.44 x 2.96 in | 25.2 x 21.1 x 2.5 in (640 x 536 x 65 mm) |
| Unfolded size | 68.28 x 15.68 x 0.99 in | 50.55 x 21.1 x 0.2 in (1284 x 536 x 5 mm) |
| Kickstand | Yes | Yes |
| Water resistance | IP65 | - |
| Warranty | 1 years | - |
| Released | 2025-07 | 2022-09 |
