--- title: "Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W 445W Solar Panel - Specs & Review | ComparePV" description: "Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W 445W solar panel. Specs: 22.30% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-trend-full-black-445-w" updated: 2026-09-11 --- # Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W Efficiency leader, heavy for its output 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Solar-Fabrik - **Model:** Mono S4 Halfcut Trend Full Black 445 W - **Series:** Mono S4 Halfcut Trend Full Black - **Rated power:** 445 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 445 W | 435 W | Strong - top 8% | | | Module efficiency | 22.30% | 22.00% | Strong - top 17% | 5,100 | | Power density | 222.7 | 220.2 | Typical | 5,302 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 24.9 kg | 22.0 kg | Weak - bottom 23% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.30% | 22.00% | Strong - top 17% | 5,100 | | Power density | 222.7 | 220.2 | Typical | 5,302 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 56.0 | 51.4 | Weak - bottom 23% | 10,301 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **22.30% module efficiency** - Top 17% of the TOPCon 400-450 W segment, against a median of 22.00%. ### Watch out for - **56.0 kg per kWp** - Bottom 23% of the TOPCon 400-450 W segment, against a median of 51.4. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 445 W - **Efficiency:** 22.30 % - **Voltage at Pmax (Vmp):** 33.71 V - **Current at Pmax (Imp):** 13.20 A - **Open-circuit voltage (Voc):** 40.05 V - **Short-circuit current (Isc):** 14.10 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.048 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 - **Bifacial:** yes ### Physical - **Length:** 1762 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 24.9 kg - **Area:** 2.00 m2 - **Power density:** 222.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 30 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 5100 of 14005 | | Power density | 5302 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 10301 of 14005 | | Warranty | 21 of 14005 | ## About this series The **Mono S4 Halfcut Trend Full Black** series is Solar-Fabrik's response to the growing demand for solar panels that combine high performance with impeccable aesthetics. The uniform black appearance - black frame, black laminate, and black grid lines - allows the installation to seamlessly blend into dark roofs, without disrupting the building's architecture. The heart of the module is the **N-Type TopCon half-cut cells**, which, compared to standard P-Type cells, generate higher voltage and exhibit better LID (light-induced degradation) resistance. The half-cut cell design reduces internal losses and increases resistance to shading - particularly important in urban and complex roof installations. The **glass-glass construction** with tempered, anti-reflective glass on both sides provides exceptional durability, Class 4 hail resistance, resistance to chemicals (ammonia, solar aerosols), and Class A fire resistance. The entire system is covered by a **30-year product warranty** issued by a German manufacturer - a unique standard of assurance in the solar panel market. This solution is designed for demanding installations on single-family homes and commercial buildings, where **aesthetics and long-term reliability** are equally important. ## Notable figures - At 22.3% efficiency, this panel is on par with typical \*\*TOPCon 400-450W\*\* modules - Power density of 222.7 W/m² matches the \*\*TOPCon 400-450W\*\* median - At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 400-450W\*\* panels - Weight of 24.9 kg is 2.9 kg above \*\*TOPCon 400-450W\*\* median (22.0 kg) - verify structural support - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### Why is the Mono S4 Halfcut Trend Full Black series recommended for dark roofs? The series features a uniform all-black aesthetic — black frame, black backsheet laminate, and black cell busbars create a seamless look that blends perfectly with dark roof surfaces. Unlike standard panels with silver frames, the installation does not disrupt the building's architecture. This is especially important on roofs visible from the street or subject to aesthetic requirements from homeowners' associations or historic preservation authorities. ### How do N-Type TOPCon cells differ from older P-Type cells in the Solar-Fabrik Mono S4 Halfcut Trend Full Black? N-Type TOPCon cells produce higher voltage and have a lower temperature coefficient (approx. -0.29 %/°C), which translates to better output during hot weather. Critically, they are virtually immune to LID (Light Induced Degradation) that affects P-Type cells during their first months of operation. As a result, the panel maintains its rated power close to 480 Wp throughout the entire 30-year performance warranty period. ### Is the Solar-Fabrik Mono S4 Halfcut Trend Full Black a bifacial panel, and what does that mean in practice? Yes, the series is bifacial — it features active cells on both sides of the module. The glass-glass construction allows reflected light to pass through the rear glass, potentially increasing energy yield by up to 10–15% compared to a monofacial panel. The gain is greatest with a bright substrate beneath the module, such as a white roofing membrane, light-colored ventilated facade, or a ground-mounted system over a reflective surface. ### What warranty covers Solar-Fabrik Mono S4 Halfcut Trend Full Black panels? Solar-Fabrik provides a 30-year product warranty covering manufacturing defects and material failures, as well as a 30-year power output warranty on this series. Both warranties are issued directly by the manufacturer headquartered in Germany. A 30-year product warranty is a rare standard in the PV panel market and provides significant protection for the investment throughout the entire expected service life of the system. ### Can the Solar-Fabrik Mono S4 Halfcut Trend Full Black panel withstand hail and harsh weather conditions? Yes. The module features glass-glass construction with anti-reflective tempered glass on both sides and meets hail resistance class 4 — it withstands ice ball impacts up to 40 mm in diameter. Fire resistance class A certification and resistance to ammonia and salt spray aerosols make the panel suitable for rural installations near farms as well as coastal environments. ### How does half-cut cell technology affect the Mono S4 Halfcut Trend Full Black panel's performance under partial shading? Splitting cells into half-cut halves means each half of the panel operates semi-independently. Even when shade falls on part of the module from a chimney, dormer, or adjacent building, the power loss is significantly smaller than with conventional full-size cells. The series is therefore especially recommended for urban installations and roofs with complex geometry where uniform irradiance across the entire surface is not achievable. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/au_s4_tfb_445-450_hc_108_en-a7eebaeb3c52.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +50 W, lighter, +2.5 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +45 W, lighter, +2.2 pp | | [Suntech STP-NT11/48QGSF-490](https://comparepv.com/panel/suntech-stp-nt11-48qgsf-490) | 490 W | +45 W, lighter, +2.2 pp | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | +40 W, lighter, +2.0 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +40 W, lighter, +2.0 pp | | [Longi Solar LR7-54HJD-495M](https://comparepv.com/panel/longi-lr7-54hjd-495m) | 495 W | +50 W, cooler, +2.0 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +40 W, lighter, +2.0 pp | | [Solar-Fabrik Mono S4 HC V 400 BF-DG](https://comparepv.com/panel/solar-fabrik-mono-s4-hc-v-400-bf-dg) | 400 W | -45 W, -2.3 pp | | [Solar-Fabrik Mono S4 Halfcut Chroma Orange 420W](https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-chroma-orange-420w) | 420 W | -25 W, -1.3 pp | | [Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W](https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-trend-full-black-450-w) | 450 W | Very close match | | [Solar-Fabrik Mono S4 Halfcut Trend White 455W](https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-trend-white-455w) | 455 W | +10 W, hotter, +0.5 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +65 W, cooler, +2.7 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +60 W, cooler, +2.4 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +55 W, cooler, +2.2 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +55 W, lighter, +2.2 pp | --- Source: https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-trend-full-black-445-w 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.