--- title: "Solar-Fabrik Mono S4 Halfcut BC Series White 490W vs Solar-Fabrik Mono S4 Quartercut Premium DE Series 480W - Solar Panel Comparison | ComparePV" description: "Compare Solar-Fabrik Mono S4 Halfcut BC Series White 490W vs Solar-Fabrik Mono S4 Quartercut Premium DE Series 480W 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-series-white-490w/solar-fabrik-mono-s4-quartercut-premium-de-series-480w" updated: 2026-09-11 --- # Solar-Fabrik Mono S4 Halfcut BC Series White 490W vs Solar-Fabrik Mono S4 Quartercut Premium DE Series 480W 10 differences, and they point both ways The largest is open-circuit voltage: 3.92 V apart. 7 of 17 comparable parameters are identical, with 2 more left out because at least one datasheet does not publish them. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Solar-Fabrik Mono S4 Halfcut BC Series White 490W](https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-bc-series-white-490w) | [Solar-Fabrik Mono S4 Quartercut Premium DE Series 480W](https://comparepv.com/panel/solar-fabrik-mono-s4-quartercut-premium-de-series-480w) | | Manufacturer | Solar-Fabrik | Solar-Fabrik | | Power | 490 Wp | 480 Wp | | Efficiency | 24.00 % | 24.02 % | | Technology | Back Contact | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | Halfcut BC Series White 490W | Quartercut Premium DE Series 480W | Difference | | --- | --- | --- | --- | | Open-circuit voltage | 40.75 V | 36.83 V | 3.92 V apart | | Cell technology | Back Contact | TOPCon | Back Contact vs TOPCon | | Module area | 2.041 m² | 1.998 m² | 0.043 m² apart | | Rated power | 490 Wp | 480 Wp | +10 W for Halfcut BC Series White 490W | | Cell count | 108 | 192 | 84 cells apart | | Short-circuit current | 15.18 A | 15.98 A | 0.80 A apart | | Weight | 25.0 kg | 24.0 kg | -1.0 kg for Quartercut Premium DE Series 480W | | Voltage at max power | 33.73 V | 31.17 V | 2.56 V apart | | Dimensions | 1800x1134x30 mm | 1762x1134x30 mm | 1800x1134x30 mm vs 1762x1134x30 mm | | Current at max power | 14.53 A | 15.40 A | 0.87 A apart | ## Every compared parameter | Parameter | Halfcut BC Series White 490W | Quartercut Premium DE Series 480W | | --- | --- | --- | | Rated power | 490 Wp | 480 Wp | | Module efficiency | 24.00 % | 24.02 % | | Power density | 240.1 Wp/m² | 240.2 Wp/m² | | Open-circuit voltage | 40.75 V | 36.83 V | | Voltage at max power | 33.73 V | 31.17 V | | Short-circuit current | 15.18 A | 15.98 A | | Current at max power | 14.53 A | 15.40 A | | Temperature coefficient | - | -0.260 %/°C | | Dimensions | 1800x1134x30 mm | 1762x1134x30 mm | | Module area | 2.041 m² | 1.998 m² | | Weight | 25.0 kg | 24.0 kg | | Weight per kWp | 51.0 kg/kWp | 50.0 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 | 192 | | 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 Projected at 25 °C. Not published by Solar-Fabrik, so a hotter case cannot be shown without inventing one side of it. - **Cumulative output, Halfcut BC Series White 490W:** 16,440 kWh - **Cumulative output, Quartercut Premium DE Series 480W:** 16,105 kWh - **Gap:** 335 kWh ## Output when hot | Condition | Cell temperature | Halfcut BC Series White 490W | Quartercut Premium DE Series 480W | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | - | 480 W | 100.0% of rated power | | Cool, bright day | 40 °C | - | 461 W | 96.1% of rated power | | Typical summer roof | 55 °C | - | 443 W | 92.2% of rated power | | Hot roof | 70 °C | - | 424 W | 88.3% of rated power | ## Against the whole database | Measure | Halfcut BC Series White 490W | Quartercut Premium DE Series 480W | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #303 | #294 | 14,005 | Quartercut Premium DE Series 480W leads by 9 places | | Power density | #313 | #294 | 14,005 | Quartercut Premium DE Series 480W leads by 19 places | | Heat behaviour | #13,924 | #511 | 14,005 | Quartercut Premium DE Series 480W leads by 13,413 places | | Weight | #4,360 | #3,317 | 14,005 | Quartercut Premium DE Series 480W leads by 1,043 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #2,188 | #2,440 | 14,005 | Halfcut BC Series White 490W leads by 252 places | ## Questions ### Which panel is better: Solar-Fabrik Mono S4 Halfcut BC Series White 490W or Solar-Fabrik Mono S4 Quartercut Premium DE Series 480W? According to our database: **Solar-Fabrik Mono S4 Quartercut Premium DE Series **480 W**** has higher module efficiency (**24.02%** vs **24.00%**). 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 Series White 490W and Solar-Fabrik Mono S4 Quartercut Premium DE Series 480W? **Solar-Fabrik Mono S4 Halfcut BC Series White **490 W**** has a module efficiency of **24.00%**, while **Solar-Fabrik Mono S4 Quartercut Premium DE Series **480 W**** is **24.02%**. 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 Series White 490W use vs Solar-Fabrik Mono S4 Quartercut Premium DE Series 480W? **Solar-Fabrik Mono S4 Halfcut BC Series White **490 W**** uses **Back Contact** cells; **Solar-Fabrik Mono S4 Quartercut Premium DE Series **480 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 Series White 490W and Solar-Fabrik Mono S4 Quartercut Premium DE Series 480W? **Solar-Fabrik Mono S4 Halfcut BC Series White **490 W**** has a **30 years** power warranty; **Solar-Fabrik Mono S4 Quartercut Premium DE Series **480 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 Series White 490W and Solar-Fabrik Mono S4 Quartercut Premium DE Series 480W bifacial panels? Both **Solar-Fabrik Mono S4 Halfcut BC Series White **490 W**** and **Solar-Fabrik Mono S4 Quartercut Premium DE Series **480 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 Series White 490W vs Solar-Fabrik Mono S4 Halfcut BC Series White 485W](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-series-white-490w/solar-fabrik-mono-s4-halfcut-bc-series-white-485w) - One difference: module efficiency - [Solar-Fabrik Mono S4 Halfcut BC Series White 490W vs Solar-Fabrik Mono S4 Halfcut BC Series Full Black 480W](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-series-white-490w/solar-fabrik-mono-s4-halfcut-bc-series-full-black-480w) - 3 differences, the largest is module efficiency - [Solar-Fabrik Mono S4 Halfcut BC Series White 490W vs Solar-Fabrik Mono S4 Halfcut BC Series Black 480W](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-series-white-490w/solar-fabrik-mono-s4-halfcut-bc-series-black-480w) - 3 differences, the largest is module efficiency - [Solar-Fabrik Mono S4 Halfcut BC Series White 490W vs Solar-Fabrik Mono S4 Halfcut BC Series Black 475W](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-series-white-490w/solar-fabrik-mono-s4-halfcut-bc-series-black-475w) - 3 differences, the largest is module efficiency - [Solar-Fabrik Mono S4 Halfcut BC Series White 490W vs Solar-Fabrik Mono S4 Halfcut BC Series Full Black 475W](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-series-white-490w/solar-fabrik-mono-s4-halfcut-bc-series-full-black-475w) - 3 differences, the largest is module efficiency - [Solar-Fabrik Mono S4 Quartercut Premium DE Series 480W vs Solar-Fabrik Mono S4 Quartercut Premium DE Series 485W](https://comparepv.com/compare/solar-fabrik-mono-s4-quartercut-premium-de-series-480w/solar-fabrik-mono-s4-quartercut-premium-de-series-485w) - One difference: module efficiency --- Source: https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-series-white-490w/solar-fabrik-mono-s4-quartercut-premium-de-series-480w 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.