--- title: "Solar-Fabrik Mono S4 Halfcut BC Full Black 475W vs Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W - Solar Panel Comparison | ComparePV" description: "Compare Solar-Fabrik Mono S4 Halfcut BC Full Black 475W vs Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-full-black-475w/solar-fabrik-mono-s4-halfcut-trend-full-black-450-w" image: "https://comparepv.com/og/compare/panels/solar-fabrik-mono-s4-halfcut-bc-full-black-475w/solar-fabrik-mono-s4-halfcut-trend-full-black-450-w.png" updated: 2026-09-11 --- # Solar-Fabrik Mono S4 Halfcut BC Full Black 475W vs Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W BC Full Black 475W leads on the differences that matter The largest is module efficiency: 0.80 pp more efficient. 8 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Solar-Fabrik Mono S4 Halfcut BC Full Black 475W](https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-bc-full-black-475w) | [Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W](https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-trend-full-black-450-w) | | Manufacturer | Solar-Fabrik | Solar-Fabrik | | Power | 475 Wp | 450 Wp | | Efficiency | 23.30 % | 22.50 % | | Technology | Back Contact | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | BC Full Black 475W | Trend Full Black 450 W | Difference | | --- | --- | --- | --- | | Module efficiency | 23.30 % | 22.50 % | +0.80 pp for BC Full Black 475W | | Temperature coefficient | -0.260 %/°C | -0.290 %/°C | +0.030 %/°C for BC Full Black 475W | | Rated power | 475 Wp | 450 Wp | +25 W for BC Full Black 475W | | Power density | 232.7 Wp/m² | 225.2 Wp/m² | +7.5 Wp/m² for BC Full Black 475W | | Cell technology | Back Contact | TOPCon | Back Contact vs TOPCon | | Module area | 2.041 m² | 1.998 m² | 0.043 m² apart | | Weight per kWp | 52.6 kg/kWp | 55.3 kg/kWp | -2.7 kg/kWp for BC Full Black 475W | | Short-circuit current | 14.88 A | 14.17 A | 0.71 A apart | | Dimensions | 1800x1134x30 mm | 1762x1134x30 mm | 1800x1134x30 mm vs 1762x1134x30 mm | | Current at max power | 14.23 A | 13.27 A | 0.96 A apart | ## Every compared parameter | Parameter | BC Full Black 475W | Trend Full Black 450 W | | --- | --- | --- | | Rated power | 475 Wp | 450 Wp | | Module efficiency | 23.30 % | 22.50 % | | Power density | 232.7 Wp/m² | 225.2 Wp/m² | | Open-circuit voltage | 40.42 V | 40.25 V | | Voltage at max power | 33.38 V | 33.91 V | | Short-circuit current | 14.88 A | 14.17 A | | Current at max power | 14.23 A | 13.27 A | | Temperature coefficient | -0.260 %/°C | -0.290 %/°C | | Dimensions | 1800x1134x30 mm | 1762x1134x30 mm | | Module area | 2.041 m² | 1.998 m² | | Weight | 25.0 kg | 24.9 kg | | Weight per kWp | 52.6 kg/kWp | 55.3 kg/kWp | | Product warranty | 30 yrs | 30 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | - | - | | Cell technology | Back Contact | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 108 | 108 | | Bifacial | Yes | Yes | ## Thirty-year yield A 1.0% first-year loss then 0.40% a year, assumed for both panels, at 1,200 kWh/kWp a year - **Cumulative output, BC Full Black 475W:** 15,937 kWh - **Cumulative output, Trend Full Black 450 W:** 15,098 kWh - **Gap:** 839 kWh ## Output when hot | Condition | Cell temperature | BC Full Black 475W | Trend Full Black 450 W | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 475 W | 450 W | 100.0% of rated power | | Cool, bright day | 40 °C | 456 W | 430 W | 95.7% of rated power | | Typical summer roof | 55 °C | 438 W | 411 W | 91.3% of rated power | | Hot roof | 70 °C | 419 W | 391 W | 87.0% of rated power | ## Against the whole database | Measure | BC Full Black 475W | Trend Full Black 450 W | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #1,057 | #4,281 | 14,129 | BC Full Black 475W leads by 3,224 places | | Power density | #1,231 | #4,284 | 14,129 | BC Full Black 475W leads by 3,053 places | | Heat behaviour | #515 | #2,220 | 14,129 | BC Full Black 475W leads by 1,705 places | | Weight | #6,309 | #9,872 | 14,129 | BC Full Black 475W leads by 3,563 places | | Warranty | #21 | #21 | 14,129 | Tied - the same position in the database | | Overall | #3,472 | #5,260 | 14,129 | BC Full Black 475W leads by 1,788 places | ## Questions ### Which panel is better: Solar-Fabrik Mono S4 Halfcut BC Full Black 475W or Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W? According to our database: **Solar-Fabrik Mono S4 Halfcut BC Full Black **475 W**** has higher module efficiency (**23.30%** vs **22.50%**); **Solar-Fabrik Mono S4 Halfcut BC Full Black **475 W**** tolerates heat better (temp coeff **-0.260%/°C** vs **-0.290%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Solar-Fabrik Mono S4 Halfcut BC Full Black 475W and Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W? **Solar-Fabrik Mono S4 Halfcut BC Full Black **475 W**** has a module efficiency of **23.30%**, while **Solar-Fabrik Mono S4 Halfcut Trend Full Black **450 W**** is **22.50%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Solar-Fabrik Mono S4 Halfcut BC Full Black 475W use vs Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W? **Solar-Fabrik Mono S4 Halfcut BC Full Black **475 W**** uses **Back Contact** cells; **Solar-Fabrik Mono S4 Halfcut Trend Full Black **450 W**** uses **TOPCon**. Modern **n-type** technologies (**TOPCon**, **HJT**, BC) typically deliver higher efficiency and lower degradation compared to older **PERC** (p-type) cells. ### What is the warranty on Solar-Fabrik Mono S4 Halfcut BC Full Black 475W and Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W? **Solar-Fabrik Mono S4 Halfcut BC Full Black **475 W**** has a **30 years** power warranty; **Solar-Fabrik Mono S4 Halfcut Trend Full Black **450 W**** has a **30 years** power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80**-87%**). Product (materials) warranties are usually shorter. ### Are Solar-Fabrik Mono S4 Halfcut BC Full Black 475W and Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W bifacial panels? Both **Solar-Fabrik Mono S4 Halfcut BC Full Black **475 W**** and **Solar-Fabrik Mono S4 Halfcut Trend Full Black **450 W**** are bifacial - they capture reflected light from the ground, which can add 5**-15%** more annual energy on ground-mount or elevated rooftop installations with a light surface beneath. ## Related comparisons - [Solar-Fabrik Mono S4 Halfcut BC Full Black 475W vs Solar-Fabrik Mono S4 Halfcut BC Full Black 480W](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-full-black-475w/solar-fabrik-mono-s4-halfcut-bc-full-black-480w) - One difference: module efficiency - [Solar-Fabrik Mono S4 Halfcut BC Full Black 475W vs Solar-Fabrik Mono S4 Halfcut BC Series Full Black 480W](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-full-black-475w/solar-fabrik-mono-s4-halfcut-bc-series-full-black-480w) - One difference: module efficiency - [Solar-Fabrik Mono S4 Halfcut BC Full Black 475W vs Solar-Fabrik Mono S4 Halfcut BC Series Full Black 475W](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-full-black-475w/solar-fabrik-mono-s4-halfcut-bc-series-full-black-475w) - The same specification on paper - [Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W vs Solar-Fabrik Mono S4 Halfcut Trend Full Black 460W](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-trend-full-black-450-w/solar-fabrik-mono-s4-halfcut-trend-full-black-460w) - 8 differences, the largest is module efficiency - [Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W vs Solar-Fabrik S4-DG460-96TMax (Full Black)](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-trend-full-black-450-w/solar-fabrik-s4-dg460-96tmax-full-black) - 8 differences, the largest is module efficiency - [Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W vs Solar-Fabrik S4-DG455-96TMax (Full Black)](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-trend-full-black-450-w/solar-fabrik-s4-dg455-96tmax-full-black) - 6 differences, the largest is open-circuit voltage --- Source: https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-full-black-475w/solar-fabrik-mono-s4-halfcut-trend-full-black-450-w Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.