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Description
Longi 490W S10 HJBB Double Glass Bifacial All Black Solar PanelLONGi S10 490W Mono 54cell All Black SDM1 Solar Panel The LONGi 490W S10 HJBB is a premium all black solar panel designed for high end residential and commercial systems. Featuring cutting edge HIBC back contact cell technology, it delivers exceptional efficiency and reliability with a sleek, seamless appearance. Its dual glass design enhances durability, while the low temperature coefficient ensures stable performance in all conditions. Key Features
LONGi S10 - 490W Mono 54cell All Black SDM1 Solar Panel
The LONGi 490W S10 HJBB is a premium all-black solar panel designed for high-end residential and commercial systems. Featuring cutting-edge HIBC back-contact cell technology, it delivers exceptional efficiency and reliability with a sleek, seamless appearance. Its dual-glass design enhances durability, while the low-temperature coefficient ensures stable performance in all conditions.
Key Features
- High Efficiency: 24.0% maximum module efficiency for superior energy yield in limited space.
- Dual Glass Design: 2.0mm + 1.6mm semi-tempered glass for improved strength and extended lifespan.
- Robust Durability: Withstands front loads up to 6000Pa and rear loads up to 3600Pa for wind and snow resistance.
- Real Black Aesthetic: Full black finish with no visible gridlines for a modern, clean look.
- Advanced HIBC Technology: Higher energy output in all weather conditions and reduced shading losses.
- Enhanced Longevity: 30-year linear power output warranty and 30-year materials and workmanship warranty.
- Fire Rating Class A: Certified to IEC fire safety standards for peace of mind.
Specifications
- Model: LR7-54HJBB-490M
- Cell Type: Monocrystalline HIBC (Half-Cut, 108 cells)
- Rated Power (Pmax): 490 W
- Module Efficiency: 24.0%
- Open-Circuit Voltage (Voc): 41.25 V
- Short-Circuit Current (Isc): 15.04 A
- Voltage at Max Power (Vmp): 34.07 V
- Current at Max Power (Imp): 14.38 A
- Power Tolerance: 0 ~ +3%
- Maximum System Voltage: 1500 V (IEC)
- Maximum Series Fuse Rating: 30 A
- Temperature Coefficient (Pmax): -0.24% / °C
- Temperature Coefficient (Voc): -0.21% / °C
- Temperature Coefficient (Isc): +0.05% / °C
- Nominal Operating Cell Temperature (NOCT): 45 ± 2 °C
- Operational Temperature Range: -40 °C to +85 °C
- Dimensions: 1800 × 1134 × 30 mm
- Weight: 23.5 kg
- Frame: Black anodized aluminium alloy
- Glass: Dual glass (2.0mm front / 1.6mm rear semi-tempered)
- Junction Box: IP68 rated
- Connector Cable: 4mm², +400mm / -200mm (customisable ±1200mm)
- Mechanical Load: 6000Pa (front) / 3600Pa (rear)
- Fire Rating: Class A (IEC)
Applications
Ideal for residential rooftops, small commercial projects, and design-conscious installations where performance and aesthetics matter.
What’s Included in the Box
-
1× LONGi 490W S10 HJBB Mono 54-Cell All Black Solar Panel
-
Product documentation & warranty information
Why Buy This Product
- High Power Output: 490W with excellent power density around 240 W/m², delivering more energy per square metre.
- 108 Half-Cells Layout: Reduces shading losses, improves performance under partial shade, and enhances durability.
- All-Black Design: Black frame and black backsheet for a sleek, uniform appearance that suits rooftop aesthetics.
- Glass-Glass Module Structure: For enhanced mechanical strength, better moisture resistance, and a longer lifespan.
- Exceptional Durability: Designed to withstand heavy snow loads (6000 Pa), strong wind loads (3600 Pa), and hail resistance class RG3.
- Long-Term Investment: 30-year warranty for both performance and materials.
- Environmentally Friendly: Low carbon footprint across the full lifecycle.
Combined with LONGi’s reputation as one of the world’s leading solar manufacturers, this panel represents a strong investment in both clean energy and long-term value.
Disclaimer:
All product information provided by Solareon UK is intended for general guidance only and may be subject to change or error. Solareon UK does not accept liability for any inaccuracies or omissions in the product specifications displayed. For accurate and detailed technical information, please refer to the manufacturer’s official datasheet available in the 'Downloads' section. We strongly advise confirming all critical details directly with the manufacturer prior to making purchasing or installation decisions.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 246 reviews
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Product Reviews
★★★★★ 5
Great blanket for keeping cool, but doesn't magically defy physics.
Size: King（103“*90”）, Color: Luxury Grey
This blanket is pretty awesome, and functions exactly as stated; however you might get the wrong impression from the image of the blanket in a the snowy mountains glowing blue as if its actively cooling. The blanket has two sides, the "cold" and "normal" side -- the cold side is the one that has the Q-max 0.45 effect, it actually feels cool to the touch. That being said, covering yourself with this blanket feels pretty similar to using a down blanket with a silk (or some cooler) fabric. It feels quite cool initially but eventually your body puts out enough heat and it "runs out" of cooling.
Although this blanket doesn't magically actively generate cooling, its quite effective because it operates fundamentally differently from most blankets. Most blankets are engineered to keep you warm by trapping heat in; this blanket is explicitly designed to draw heat away from your body. As such, it is extremely effective if you use a fan or run the AC, because your body heat is drawn away from the top surface and the inner surface can "grab" and remove more heat. As you probably know, air is a great insulator so this blanket has to be making contact with your body to achieve the cooling effect. If you are familiar with the way "Under Armor" works, I believe this blanket uses a similar principle to keep you cool.
This blanket is quite light weight and comfortable, with a very silky (polyester) feeling outer surface. I have not owned this for a year yet, but I'm quite confident that this blanket would be suitable for winter (in Southern California); except if you live in a snowy region.
5/5 for a somewhat high tech blanket that keeps you cool; its the best in cooling you can get without resorting to "active" cooled blankets such as ones with water circulation.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Fascinating product.
Size: Twin（90“ * 67”）, Color: Luxury Grey
It is a nightly struggle. My wife is a hot sleeper. I am not. It’s resulted in more than one argument. One of us is usually left shivering or sweating. So when Amazon offered to send me this cooling blanket, I thought I would give it a try. I’m really glad that I did.
This item arrived well packaged and in good condition. It is lightweight and made of a polyester type material. The stitching is strong. The first test was the washing machine. We washed it with cold water on the gentle cycle. We then line dried it. It held up fine.
We have a king size bed, but I decided to get a twin sized blanket. I put a warm blanket on my side of the bed and the cooling blanket on her side of the bed. It worked brilliantly. I don’t know what the science is buying these blankets, but it really does lower your body temperature. The moment that you open the package and feel the blanket, you’ll realize that it has some sort of cooling gel inside of it or something that draws heat away from you.
Suffice it to say that our first night with this product was one of the best nights sleep that both of us had. If you have a problem like this, I would definitely recommend this blanket as a viable solution.
In terms of value, I understand that this is not cheap; however, ask yourself what the value is of a good nights sleep. Overall, I’m very pleased with the quality, design, and functionality of the cooling blanket. I would definitely recommend it.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Cooler than my thinner blankets
Size: Queen (90" * 90"）, Color: Luxury Grey
This is a really nice cooling blanket—silky, soft, and comfortable. I actually tried it on a cold day (classic flip flip Rocky Mountain weather where it swings from 90° to 30° overnight), and it was absolutely freezing, lol. On warmer days, I can clearly tell that it's cooler than even my thinner blankets. My husband tends to sleep hot, and this works great for him. I run cold; it can feel a bit too cool initially, but that fades after a few minutes and stays comfortable.
I also have two cats and was worried they’d snag it right away. We keep their nails trimmed, but they’re still cats. So far (about a week in), no snags or pulls—but I’ll update if that changes since that’s a big factor for me.
At almost $100, it’s definitely not cheap for a blanket. I think it makes the most sense if you’re a hot sleeper or deal with night sweats—then the cooling effect feels more worth it. If you tend to run cold, it might feel like overkill unless you specifically want something for summer. Overall good value for a nice quality cooling blanket.
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Reviewed in the United States on May 4, 2026
★★★★★ 5
Surprisingly strong cooling effect and really comfortable
Size: Queen (90" * 90"）, Color: Luxury Grey, Size: Queen (90" * 90"）, Color: Luxury Grey
This comforter honestly impressed me more than I expected. The cooling effect is very noticeable right away. Like actually noticeable, not just one of those things brands say. When you first touch it, it feels cool to the skin and that feeling sticks around instead of fading instantly.
I’ve been using it at night and it definitely helps with overheating. I tend to get cery hot when I sleep, also I’m pregnant right now so that makes it even worse, and this has made a difference. It feels lightweight but still cozy enough that it doesn’t feel like you’re just using a thin sheet.
The fabric is really soft and smooth, also it lays nicely on the bed without feeling stiff or bulky. It gives that clean, almost silky feel without being slippery.
One thing to keep in mind is it’s not a super thick comforter, but i will say there is some heft to it. Like if i wrap myself around in it, it has some weight to it.
Overall, I’m really happy with it. It actually does what it claims with the cooling, and it’s comfortable enough for everyday use. Great option if you’re a hot sleeper or just want something lighter and refreshing at night.
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Reviewed in the United States on April 22, 2026
★★★★★ 5
I love this comforter! It is so silky soft, feels so nice to sleep under.
Size: King（103“*90”）, Color: Luxury Grey, Size: King（103“*90”）, Color: Luxury Grey
I absolutely love this comforter! It is super lightweight and has a very silky soft shell on both sides. It feels so good to sleep under! Ever since I have been using it, I haven't been waking up in sweat covered sheets. It constantly has a cool feel to it 24/7. It is large enough that it fits my king size bed pretty good. It doesn't hang far over the edges, but it fits. It is dual sided, so you can have a light gray look on one side and a dark gray look on the other side, depending on what fits your decor better. I definitely recommend getting if you are on the lookout for a cooling comforter, especially because of the silky soft feel.
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Reviewed in the United States on May 11, 2026
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