CTOLITY 400W Portable Solar Panel (400W-NEW)
#10 in LargeFull review
A low-priced 400 W folding panel, but its listing is too thin and inconsistent to recommend over better-documented panels until CTOLITY publishes full specs.
Amazon $289.99$289.99
3.9/5
A 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.
- 300 WRated output
- Not tested (estimated 87%)Tested output
- 15.2 lbWeight
- $0.60Price / W
Check price at Amazon$179.77
Price checked October 21, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Charges a 12 V battery straight out of the box, with a standalone PWM controller and alligator clips included
- Comes with XT60 and several barrel-plug adapters for power stations too
- Long 9.85 ft cable lets the panel sit in sun while the battery or station stays in shade
- Cheap for a 300 W folding kit
Cons
- DOKIO publishes no voltage, current, efficiency or water-resistance figures, so matching it to a power station is guesswork
- Many power stations cap solar input at 100-200 W, so they can’t use the full 300 W
- 1-year warranty and no independent output test
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Output | |
|---|---|
| Rated power | 300 W |
| Tested output | Not tested (estimated 87%) |
| Cells | Monocrystalline |
| Bifacial | No |
| Connections | |
| Cables included | 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 | 15.2 lb (6.9 kg) |
| Folded size | 19.3 x 37.4 x 1.1 in |
| Warranty | 1 years |
Alternatives in this size
BLUETTI SORA 500 Portable Solar Panel (500W)
#11 in LargeFull review
For owners of large BLUETTI or similar power stations who want maximum watts from one panel at a campsite or during an outage. The short warranty and high voltage rule it out for small stations.
Amazon $798.99 BLUETTI $849$798.99
BLUETTI PV350 350W Portable Solar Panel
#13 in LargeFull review
For BLUETTI and other mid-size station owners who want lots of watts from one panel near the car. Hikers and anyone who moves it often should look at lighter panels.
BLUETTI $649$649
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