The Anker SOLIX PS400 Bifacial Portable Solar Panel is the better portable solar panel overall, rated 4.3 to 3.9. The Anker SOLIX PS400 Bifacial Portable Solar Panel leads on durability and features. The DOKIO 300W Foldable Solar Panel Kit wins on value. The DOKIO 300W Foldable Solar Panel Kit costs $420.21 less ($179.77 vs $599.98).
For owners of large power stations who want 400 W from a single panel they can still carry. It is much lighter than older 400 W folding panels.
Amazon $599.98 Anker SOLIX $699.99A low-cost all-in-one kit for keeping a 12 V RV, boat or camper battery topped up. Power-station owners are better served by a panel with published electrical specs.
Amazon $179.77Prices 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 large portable solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | Anker SOLIX PS400 Bifacial Portable Solar Panel | DOKIO 300W Foldable Solar Panel Kit |
|---|---|---|
| Overall rating | 4.3/5 | 3.9/5 |
| Value 30% | 57 $1.50 per rated watt | 100 $0.60 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% | 100 18.3 W per lb (21.9 lb (9.9 kg)) | 100 19.7 W per lb (15.2 lb (6.9 kg)) |
| Durability 15% | 100 IP68, 5-year warranty | 0 no IP rating, 1-year warranty |
| Efficiency 10% | 100 25% claimed efficiency | 50 efficiency not published (neutral score used) |
| Features 10% | 60 built-in kickstand, bifacial | 20 USB output |
| Anker SOLIX PS400 Bifacial Portable Solar Panel | DOKIO 300W Foldable Solar Panel Kit | |
|---|---|---|
| Output | ||
| Rated power | 400 W | 300 W |
| Tested output | Not tested (estimated 87%) | Not tested (estimated 87%) |
| Efficiency | 25% ("25%+ conversion efficiency" per Anker; cell vs module not stated) | - |
| Cells | - | Monocrystalline |
| Bifacial | Yes | No |
| Electrical | ||
| Voltage at max power (Vmp) | 48 V | - |
| Current at max power (Imp) | 8.3 A | - |
| Connections | ||
| Cables included | 2x 8.2 ft (2.5 m) solar charging cable, 1.6 ft (0.5 m) XT-60i solar charging cable | 9.85 ft (3 m) cable, PWM controller, SAE, XT60 and alligator-clip leads, DC5521, DC5525, DC35135 and DC6440 adapters |
| USB ports | - | Dual USB ports; they charge devices when a 12 V battery is connected |
| Build | ||
| Weight | 21.9 lb (9.9 kg) | 15.2 lb (6.9 kg) |
| Folded size | 22.3 x 38.7 x 3.2 in | 19.3 x 37.4 x 1.1 in |
| Unfolded size | 90.2 x 38.7 x 0.7 in | - |
| Kickstand | Yes | - |
| Water resistance | IP68 | - |
| Warranty | 5 years | 1 years |
