400W Folding Solar Power Panel, IP67 Waterproof Portable Solar Charger for Emergency Home‑Use
Our 300W & 400W foldable solar panel chargers deliver reliable off‑grid solar power for home backup, road trips and outdoor adventures. Built‑in high‑efficiency solar cells (>22 % conversion rate) paired with durable ETFE‑coated waterproof fabric. Light‑weight, fold‑and‑go portable design with multi‑interface output, easily compatible with portable power stations, RV batteries and most outdoor electronics. Custom‑logo service is available to meet your branding needs.
| Parameter | Value |
|---|---|
| Output Power (@STC) | 300.0 W ±5% |
| Open Voltage (@STC) | 43.52V ±5% |
| Standard Voltage (@STC) | 37.12V ±5% |
| Standard Current (@STC) | 8.539A ±5% |
| Short Circuit (@STC) | 9.223A ±5% |
| Brand Name | KM SOLAR |
| Model Number | KM-YT40W |
| Place of Origin | Guangdong |
| Cell Size | 182mm x 182mm |
| Type | Flexible, Foldable |
| Panel Dimensions | 92.6 × 34.15 × 0.3 cm |
| Panel Efficiency | 23% |
| Weight | 700g |
| Cell Type | Mono Solar Cell |
| Color | Black |
| Application | Outdoor |
| Maximum Power | 40W |
- Camping, hiking, beach trips & outdoor adventures
- RV, campervan & motorhome off-grid power supply
- Home emergency backup power during blackouts
- Off-grid cabin, backyard and remote-site power
- Van-life road travel, overlanding & expedition trips
- Outdoor work, field research and mobile job-site power
- Charging portable power stations, laptops, refrigerators & mobile electronics
Q1: Can this solar panel charge my portable power station?
A: Yes. Our 300W/400W foldable solar panels are widely compatible with most mainstream portable power stations. Please double‑check the voltage match before connection.
Q2: Is the solar panel waterproof?
A: The 400W version comes with IP67 waterproof ETFE surface. It can resist light rain and splashes. Do NOT submerge the panel or connectors in water.
Q3: What is the solar conversion efficiency?
A: Both 300W and 400W models feature high‑efficiency solar cells with ≥22% conversion efficiency.
Q4: Can I add my own logo on the product?
A: Yes, custom‑logo printing on the accessory storage bag is available for bulk orders.
Q5: How do I store the solar panel when not in use?
A: Fold it up and store in a dry, cool place, avoid long‑time exposure to sharp objects.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.