Pay in installments of $27.84 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
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
4.3 ★★★★★
Based on 10 reviews
Sort
Product Reviews
★★★★★ 5
Maestro House Mini Coffee Scale
I have begun to drink tea, pu’erh tea to be specific. I have several varieties and I have had a problem with getting consistent results. The varieties can be very different in size depending on when the leaves are harvested (leaves harvested in spring are much smaller). So the easiest way to get consistent results is by weight. This scale is very easy to use with a ceramic tea scoop, set the tea scoop on the scale, zero it out and add tea leaves. This has made my results much better, without the wild swings in strength I had been getting before trying to eyeball even measures. This scale gives me accurate measurements to one tenth of a gram.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
★★★★★ 4
Mostly great, except one little annoyance
Color: Black&Silver, Color: Black&Silver
Pros- lightweight, small, very accurate, easy to clean, timer included.
Cons- I use this to brew espresso on my Breville Touch and to get an accurate reading, you have to place something flat (structured) under the scale. Otherwise the reading just jumps all over the place. I know lot of espresso machines have the same base, so this might be an issue for some!
This is my reason for 4/5 stars. It’s an easy fix, it’s just kind of annoying. Value for the price seems to be on point. It’s easy to clean. It has a timer as well as scale (nice for espresso). Buttons work the first time you push them.
That’s it that’s all
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
★★★★★ 5
4.95 stars
Color: Black
TLDR: Buy it. It works well, it has impressive and useful features, it looks great, it’s thin/low-profile, and it’s a great price.
Detailed review: I’m very happy with this scale, and it has certainly upped my espresso game by leaps and bounds. I’m able to weigh my beans very precisely down to a tenth of a gram (roughly the weight of a single bean), so my dosing is on point. Also, it fits beneath the portafilter with room to spare for my cup, so I can weigh my shots and accurately measure my input/output ratio. And automatic mode is magic! When the espresso hits the cup, the timer starts running, so I can measure flow rate along with everything else! Overall, super easy to use and very necessary for the at-home barista.
One caveat: It acted weird on the 2nd or 3rd day, and I thought I was going to have to return it. The weight would slowly creep up even though I wasn’t adding any coffee. I dusted it off, made sure it was dry, set it on a more stable surface… I still don’t know what the matter was, but it stopped freaking out and it hasn’t really given me any trouble since. Also, I should mention that the automatic function doesn’t always work 100% perfectly; it works, and usually works quite well, but depending on the flow rate, you might get some drops dribbling into the cup and the timer not detect it right away. (I think the timer must be activated according to some sort of algorithm that looks for a certain increase in a certain amount of time, so a slower initial drip rate might not trigger it at first.) Also weirdly, it seems like about half of the time when the weight stops increasing (i.e., espresso stops flowing) , the timer pauses (as I think it’s supposed to do), but other times, the timer keeps running until you manually stop it. I don’t know… It’s a weird glitch, I guess, but it doesn’t really make any difference. The weight is accurate, and that’s the primary thing to keep an eye on.
So, is it perfect? No, I guess not. But, it works extremely well and functions perfectly for my purposes. In fact, it’s a lot nicer and fancier than I expected – plus, it’s more affordable and more streamlined than its obvious rival the Acacia.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2024
★★★★★ 5
Excellent and super accurate
Color: Black, Color: Black
I had a precision oxo which was more expensive than this one but not great though, it would register .4 grams suddenly and not sensitive to the 1-2 bean increments. I bought this one for espresso specifically and man it is fantastic so accurate, super responsive, well built, size is great if you want to weigh your shot under your portafilter. I have a fellow series 1 and it’s amazing working with it. Overall highly recommend and for the price it’s amazing great value! Not sure why would I buy a bookoo for $130 or a fellow scale for $200. This one works great for $40
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
★★★★★ 5
Just a tiny, accurate scale
Color: Black
Works flawlessly after I calibrated it compared to my other. Out of the box it was (very) off. Now it's within .1 of a gram. It's far more responsive than I expected. It's perfect for espresso and it's tiny so it fits on the smallest drip trays.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026