--- title: "Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W vs Solar-Fabrik Mono S4 Halfcut Trend Full Black 455W - Solar Panel Comparison | ComparePV" description: "Compare Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W vs Solar-Fabrik Mono S4 Halfcut Trend Full Black 455W 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-trend-full-black-450-w/solar-fabrik-mono-s4-halfcut-trend-full-black-455w" updated: 2026-09-11 --- # Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W vs Solar-Fabrik Mono S4 Halfcut Trend Full Black 455W 455W leads on the differences that matter The largest is open-circuit voltage: 4.06 V apart. 12 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 Trend Full Black 450 W](https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-trend-full-black-450-w) | [Solar-Fabrik Mono S4 Halfcut Trend Full Black 455W](https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-trend-full-black-455w) | | Manufacturer | Solar-Fabrik | Solar-Fabrik | | Power | 450 Wp | 455 Wp | | Efficiency | 22.50 % | 22.80 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 450 W | 455W | Difference | | --- | --- | --- | --- | | Open-circuit voltage | 40.25 V | 36.19 V | 4.06 V apart | | Module efficiency | 22.50 % | 22.80 % | +0.30 pp for 455W | | Short-circuit current | 14.17 A | 15.87 A | 1.70 A apart | | Cell count | 108 | 96 | 12 cells apart | | Voltage at max power | 33.91 V | 30.01 V | 3.90 V apart | | Current at max power | 13.27 A | 15.16 A | 1.89 A apart | ## Every compared parameter | Parameter | 450 W | 455W | | --- | --- | --- | | Rated power | 450 Wp | 455 Wp | | Module efficiency | 22.50 % | 22.80 % | | Power density | 225.2 Wp/m² | 227.7 Wp/m² | | Open-circuit voltage | 40.25 V | 36.19 V | | Voltage at max power | 33.91 V | 30.01 V | | Short-circuit current | 14.17 A | 15.87 A | | Current at max power | 13.27 A | 15.16 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 1762x1134x30 mm | 1762x1134x30 mm | | Module area | 1.998 m² | 1.998 m² | | Weight | 24.9 kg | 24.9 kg | | Weight per kWp | 55.3 kg/kWp | 54.7 kg/kWp | | Product warranty | 30 yrs | 30 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | - | - | | Cell technology | TOPCon | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 108 | 96 | | 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 Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other. - **Cumulative output, 450 W:** 15,098 kWh - **Cumulative output, 455W:** 15,266 kWh - **Gap:** 168 kWh ## Output when hot | Condition | Cell temperature | 450 W | 455W | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 450 W | 455 W | 100.0% of rated power | | Cool, bright day | 40 °C | 430 W | 435 W | 95.7% of rated power | | Typical summer roof | 55 °C | 411 W | 415 W | 91.3% of rated power | | Hot roof | 70 °C | 391 W | 396 W | 87.0% of rated power | ## Against the whole database | Measure | 450 W | 455W | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #4,222 | #2,714 | 14,005 | 455W leads by 1,508 places | | Power density | #4,225 | #2,888 | 14,005 | 455W leads by 1,337 places | | Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database | | Weight | #9,790 | #9,129 | 14,005 | 455W leads by 661 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #5,200 | #4,712 | 14,005 | 455W leads by 488 places | ## Questions ### Which panel is better: Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W or Solar-Fabrik Mono S4 Halfcut Trend Full Black 455W? According to our database: **Solar-Fabrik Mono S4 Halfcut Trend Full Black **455 W**** has higher module efficiency (**22.80%** vs **22.50%**). 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 Trend Full Black 450 W and Solar-Fabrik Mono S4 Halfcut Trend Full Black 455W? **Solar-Fabrik Mono S4 Halfcut Trend Full Black **450 W**** has a module efficiency of **22.50%**, while **Solar-Fabrik Mono S4 Halfcut Trend Full Black **455 W**** is **22.80%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W use vs Solar-Fabrik Mono S4 Halfcut Trend Full Black 455W? **Solar-Fabrik Mono S4 Halfcut Trend Full Black **450 W**** uses **TOPCon** cells; **Solar-Fabrik Mono S4 Halfcut Trend Full Black **455 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 Trend Full Black 450 W and Solar-Fabrik Mono S4 Halfcut Trend Full Black 455W? **Solar-Fabrik Mono S4 Halfcut Trend Full Black **450 W**** has a **30 years** power warranty; **Solar-Fabrik Mono S4 Halfcut Trend Full Black **455 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 Trend Full Black 450 W and Solar-Fabrik Mono S4 Halfcut Trend Full Black 455W bifacial panels? Both **Solar-Fabrik Mono S4 Halfcut Trend Full Black **450 W**** and **Solar-Fabrik Mono S4 Halfcut Trend Full Black **455 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 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 - [Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W vs Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-trend-full-black-450-w/solar-fabrik-mono-s4-halfcut-trend-full-black-445-w) - One difference: module efficiency - [Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W vs Solar-Fabrik S4-DG625-132TMax](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-trend-full-black-450-w/solar-fabrik-s4-dg625-132tmax) - 14 differences, the largest is module efficiency - [Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W vs Solar-Fabrik S4-DG620-132TMax](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-trend-full-black-450-w/solar-fabrik-s4-dg620-132tmax) - 14 differences, the largest is rated power --- Source: https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-trend-full-black-450-w/solar-fabrik-mono-s4-halfcut-trend-full-black-455w 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.