The GEYOTO S200 200W Bifacial Portable Solar Panel is the better portable solar panel overall, rated 4.5 to 4.2. The GEYOTO S200 200W Bifacial Portable Solar Panel leads on durability, efficiency and portability. The MHPOWOS 220W 40V Portable Solar Panel (MH-SP-002) wins on value. The MHPOWOS 220W 40V Portable Solar Panel (MH-SP-002) costs $40 less ($179.99 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 good fit for owners of mid-size and larger power stations whose solar input accepts around 50 V, where the higher voltage helps on long cable runs. Check your station’s input voltage limit before buying.
Amazon $189.99 MHPOWOS $179.99Prices 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 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 | MHPOWOS 220W 40V Portable Solar Panel (MH-SP-002) |
|---|---|---|
| Overall rating | 4.5/5 | 4.2/5 |
| Value 30% | 90 $1.10 per rated watt | 100 $0.82 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)) | 48 11.7 W per lb (18.7 lb (8.5 kg)) |
| Durability 15% | 100 IP68, 3-year warranty | 70 IP67, 1.5-year warranty |
| Efficiency 10% | 100 26% claimed efficiency | 75 23.5% claimed efficiency |
| Features 10% | 60 built-in kickstand, bifacial | 55 built-in kickstand, series/parallel |
| GEYOTO S200 200W Bifacial Portable Solar Panel | MHPOWOS 220W 40V Portable Solar Panel (MH-SP-002) | |
|---|---|---|
| Output | ||
| Rated power | 200 W | 220 W |
| Tested output | Not tested (estimated 87%) | Not tested (estimated 87%) |
| Efficiency | 26% (cell efficiency per GEYOTO's product description) | 23.5% (MHPOWOS lists a maximum conversion rate of 23.5% without saying cell or module) |
| Cells | Monocrystalline (N-type) | Monocrystalline |
| Bifacial | Yes | No |
| Electrical | ||
| Open-circuit voltage (Voc) | - | 48 V |
| Voltage at max power (Vmp) | 25.2 V | 40 V |
| Short-circuit current (Isc) | - | 6 A |
| Current at max power (Imp) | 7.9 A | 5.5 A |
| Series / parallel | - | Yes |
| Connections | ||
| Output connector | MC4 | MC4 |
| Cables included | 10 ft (3 m) MC4 to XT60 cable, reflective EVA carrying case | 7-in-1 solar connector cable (XT60, Anderson, DC7909, DC8020, DC5525, DC5521, DC35135) |
| USB ports | None | - |
| Build | ||
| Weight | 15 lb (6.8 kg) | 18.7 lb (8.5 kg) |
| Folded size | 20.6 x 26.5 x 1.1 in (522 x 673 x 28 mm) | 23.5 x 21.25 x 2.3 in (59.6 x 54.0 x 5.8 cm) |
| Unfolded size | 82.2 x 26.5 x 1.1 in (2088 x 673 x 28 mm) | 85.2 x 23.5 x 1.1 in (216.3 x 59.6 x 2.8 cm) |
| Kickstand | Yes | Yes |
| Water resistance | IP68 | IP67 |
| Warranty | 3 years | 1.5 years |
