--- title: "WINAICO WST-480BDX54-B2 Solar Panel: Specs & Datasheet | ComparePV" description: "WINAICO WST-480BDX54-B2 solar panel. Specs: 23.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/winaico-wst-480bdx54-b2" image: "https://comparepv.com/og/panel/winaico-wst-480bdx54-b2.png" updated: 2026-10-23 --- # WINAICO WST-480BDX54-B2 Middle of its segment, heavy for its output 167 panels in the segment Back Contact 450-500 W ## Identity - **Manufacturer:** WINAICO - **Model:** WST-480BDX54-B2 - **Series:** WST-BDX54-B2 WBC Series - **Rated power:** 480 W - **Cell technology:** Back Contact - **Bifacial:** yes ## How it compares Compared against segment Back Contact 450-500 W (167 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 480 W | 475 W | Typical | | | Module efficiency | 23.50% | 23.52% | Typical | 749 | | Power density | 235.2 | 235.2 | Typical | 752 | | Temperature coefficient | -0.260 | -0.260 | Typical | 515 | | Weight (kg) | 25.0 kg | 23.5 kg | Weak - bottom 12% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.50% | 23.52% | Typical | 749 | | Power density | 235.2 | 235.2 | Typical | 752 | | Temperature coefficient | -0.260 | -0.260 | Typical | 515 | | Weight per kWp | 52.1 | 48.5 | Weak - bottom 12% | 5,553 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **52.1 kg per kWp** - Bottom 12% of the Back Contact 450-500 W segment, against a median of 48.5. - **Best for:** Residential and BIPV. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 480 W - **Efficiency:** 23.50 % - **Voltage at Pmax (Vmp):** 33.84 V - **Current at Pmax (Imp):** 14.19 A - **Open-circuit voltage (Voc):** 40.76 V - **Short-circuit current (Isc):** 14.96 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.260 %/degC - **Temperature coefficient of Voc:** -0.220 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** Back Contact - **Cell count:** 108 - **Bifacial:** yes - **Bifacial gain:** 20.00 ### Physical - **Length:** 1800 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 25.0 kg - **Area:** 2.04 m2 - **Power density:** 235.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 30 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 88.8 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.35 % - **Output after 30 years:** 426 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 749 of 14129 | | Power density | 752 of 14129 | | Temperature coefficient | 515 of 14129 | | Weight | 5553 of 14129 | | Warranty | 21 of 14129 | ## About this series The WST-BDX54-B2 WBC series is WINAICO's flagship module line built around **back contact technology**, in which all cell electrical connections are moved to the rear side of the panel. As a result, the front surface stays completely free of visible grid lines and interconnect ribbons, producing a uniform, deep black finish known as **Ultra Black aesthetics** - a solution particularly valued on pitched residential roofs, where the look of the installation genuinely matters. The panels are built on **N-type monocrystalline bifacial cells**, which reduce power losses at high operating temperatures and capture additional reflected irradiance on the rear side. The **glass-glass construction**, combined with a reinforced 35 mm frame, increases resistance to microcracks and mechanical damage, translating into a longer system lifespan. The manufacturer backs the series with a **30-year product and performance warranty**, supported by a German guarantor, and the first year of operation is additionally covered by insurance for the entire solar system. The WBC series suits investors looking to combine high energy efficiency with a modern, premium look for their photovoltaic installation. ## Notable figures - At 23.5% efficiency, this panel is on par with typical \*\*Back Contact 450-500W\*\* modules - At 235.2 W/m² power density, roof space requirements are typical for \*\*Back Contact 450-500W\*\* panels - At -0.26%/°C, hot weather performance is typical for \*\*Back Contact 450-500W\*\* panels - At 25.0 kg (1.5 kg above \*\*Back Contact 450-500W\*\* median of 23.5 kg), requires checking roof load capacity - Bifacial design (70% factor) captures reflected light - adds 4-10% yield on ground-mount or white roof ## Questions ### What is back contact technology in WINAICO WST-BDX54-B2 WBC panels and does it improve efficiency? Back contact means all electrical interconnections between cells are moved to the rear side of the module. This leaves the front surface free of visible busbars and ribbons, reducing shading losses from those elements and improving light capture. Combined with N-type monocrystalline cells, the WBC series reaches up to 485 Wp while maintaining a uniform black appearance. ### Are WINAICO WBC panels with Ultra Black aesthetics suitable for sloped roofs on single-family homes? Yes, the uniform black surface without visible busbars or ribbons is particularly recommended for sloped roofs on residential buildings where the appearance of the installation matters. The reinforced 35 mm frame and glass-glass construction provide added rigidity and mechanical resistance, which is important for typical roof structures and demanding snow loads. ### What does bifacial cell technology mean in the WST-BDX54-B2 WBC series, and is it worth the extra cost? Bifacial cells capture solar radiation on both the front and rear sides of the panel, allowing additional energy gains from light reflected off the ground, roof, or surrounding surfaces. In practice, the gain is variable and depends on mounting type and ground albedo. The effect is more noticeable on light-colored ground or ground-mounted installations than on a standard rooftop installation over dark roofing tiles. ### What warranty comes with WINAICO WBC panels, and what is covered during the first year of operation? The manufacturer provides a 30-year product warranty and a 30-year performance warranty, one of the longer warranty terms available on the market. The warranty is backed by a German guarantor, increasing claim security for the investor. Additionally, the first year of operation of the entire installation is covered by insurance, protecting the investor during commissioning and early use. ### Do N-type cells in WINAICO WBC panels handle high temperatures better than standard P-type cells? N-type monocrystalline cells have a lower power temperature coefficient than typical P-type cells, meaning smaller power losses at high module operating temperatures. This matters in summer, when panel temperature on a roof can far exceed ambient temperature. Thanks to this technology, the WBC series maintains more stable energy production on hot days compared to older P-type designs. ### How does the WINAICO WST-BDX54-B2 WBC differ from standard monocrystalline panels without back contact technology? The main difference is the absence of visible busbars and interconnect ribbons on the front, plus a glass-glass construction instead of a typical glass-with-backsheet design. This delivers better aesthetics, higher resistance to microcracks, and longer service life, but comes at a higher price compared to standard P-type monocrystalline modules without bifacial or back contact technology. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/WINAICO_WST-485BDX54-B2_EU_1026-8365c3e2dcab.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +30 W, cooler, +1.5 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +15 W, lighter, +1.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +25 W, cooler, +1.2 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | +25 W, +1.2 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +10 W, lighter, +1.0 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +20 W, cooler, +1.0 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +20 W, lighter, +1.0 pp | | [WINAICO WST-475BDX54-A2](https://comparepv.com/panel/winaico-wst-475bdx54-a2) | 475 W | Very close match | | [WINAICO WST-485BDX54-A2](https://comparepv.com/panel/winaico-wst-485bdx54-a2) | 485 W | +0.3 pp | | [WINAICO WST-490BDX54-A2](https://comparepv.com/panel/winaico-wst-490bdx54-a2) | 490 W | +10 W, +0.5 pp | | [WINAICO WST-495BKX54-B2](https://comparepv.com/panel/winaico-wst-495bkx54-b2) | 495 W | +15 W, +0.8 pp | --- Source: https://comparepv.com/panel/winaico-wst-480bdx54-b2 Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.