The GEYOTO S200 200W Bifacial Portable Solar Panel is the better portable solar panel overall, rated 4.5 to 4.1. The GEYOTO S200 200W Bifacial Portable Solar Panel leads on durability and features. The Holdwell S 200W Semi-Flexible Solar Panel wins on value. The Holdwell S 200W Semi-Flexible Solar Panel costs $106.90 less ($113.09 vs $219.99).
A bifacial 200 W panel for car campers and RV owners with an XT60-input power station, where the reflective case can add some extra output. Not one to carry far.
Amazon $219.99 GEYOTO $259.99A low-cost 200 W flexible panel for a curved RV, boat or van roof, for buyers willing to work without a spec sheet. Anyone who needs published voltages should pick an established brand.
Amazon $113.09Prices 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 mid-size portable solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | GEYOTO S200 200W Bifacial Portable Solar Panel | Holdwell S 200W Semi-Flexible Solar Panel |
|---|---|---|
| Overall rating | 4.5/5 | 4.1/5 |
| Value 30% | 90 $1.10 per rated watt | 100 $0.57 per rated watt |
| Tested output 20% | 89 not yet tested; estimated 87% of rated watts from 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% | 61 13.3 W per lb (15 lb (6.8 kg)) | 50 weight not published (neutral score used) |
| Durability 15% | 100 IP68, 3-year warranty | 60 IP67 |
| Efficiency 10% | 100 26% claimed efficiency | 100 25% claimed efficiency |
| Features 10% | 60 built-in kickstand, bifacial | 0 no kickstand, USB or bifacial cells |
| GEYOTO S200 200W Bifacial Portable Solar Panel | Holdwell S 200W Semi-Flexible Solar Panel | |
|---|---|---|
| Output | ||
| Rated power | 200 W | 200 W |
| Tested output | Not tested (estimated 87%) | Not tested (estimated 87%) |
| Efficiency | 26% (cell efficiency per GEYOTO's product description) | 25% (per the Amazon listing, not stated as cell or module) |
| Cells | Monocrystalline (N-type) | Monocrystalline |
| Bifacial | Yes | No |
| Electrical | ||
| Voltage at max power (Vmp) | 25.2 V | - |
| Current at max power (Imp) | 7.9 A | - |
| Connections | ||
| Output connector | MC4 | - |
| Cables included | 10 ft (3 m) MC4 to XT60 cable, reflective EVA carrying case | - |
| USB ports | None | None |
| Build | ||
| Weight | 15 lb (6.8 kg) | - |
| Flexible | - | Yes, bends 180-240° per the Amazon listing |
| Dimensions | - | 53.15 x 30.12 x 0.77 in |
| Folded size | 20.6 x 26.5 x 1.1 in (522 x 673 x 28 mm) | - |
| Unfolded size | 82.2 x 26.5 x 1.1 in (2088 x 673 x 28 mm) | - |
| Kickstand | Yes | No |
| Water resistance | IP68 | IP67 |
| Warranty | 3 years | - |
