--- title: "Solar-Fabrik Mono S4 Halfcut BC White 480-490W vs Solar-Fabrik Mono S4 Halfcut BC White 485 - Solar Panel Comparison | ComparePV" description: "Compare Solar-Fabrik Mono S4 Halfcut BC White 480-490W vs Solar-Fabrik Mono S4 Halfcut BC White 485 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-white-480-490w/solar-fabrik-mono-s4-halfcut-bc-white-485" updated: 2026-09-11 --- # Solar-Fabrik Mono S4 Halfcut BC White 480-490W vs Solar-Fabrik Mono S4 Halfcut BC White 485 Identical on every published parameter All 18 comparable parameters agree, with 1 more left out because at least one datasheet does not publish it. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Solar-Fabrik Mono S4 Halfcut BC White 480-490W](https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-bc-white-480-490w) | [Solar-Fabrik Mono S4 Halfcut BC White 485](https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-bc-white-485) | | Manufacturer | Solar-Fabrik | Solar-Fabrik | | Power | 485 Wp | 485 Wp | | Efficiency | 23.75 % | 23.75 % | | Technology | Back Contact | Back Contact | ## Every compared parameter | Parameter | 480-490W | 485 | | --- | --- | --- | | Rated power | 485 Wp | 485 Wp | | Module efficiency | 23.75 % | 23.75 % | | Power density | 237.6 Wp/m² | 237.6 Wp/m² | | Open-circuit voltage | 40.64 V | 40.64 V | | Voltage at max power | 33.61 V | 33.61 V | | Short-circuit current | 15.08 A | 15.08 A | | Current at max power | 14.43 A | 14.43 A | | Temperature coefficient | -0.260 %/°C | -0.260 %/°C | | Dimensions | 1800x1134x30 mm | 1800x1134x30 mm | | Module area | 2.041 m² | 2.041 m² | | Weight | 25.0 kg | 25.0 kg | | Weight per kWp | 51.5 kg/kWp | 51.5 kg/kWp | | Product warranty | 30 yrs | 30 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | - | - | | Cell technology | Back Contact | Back Contact | | 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 Same temp coeff. for both panels (-0.260 %/°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, 480-490W:** 16,273 kWh - **Cumulative output, 485:** 16,273 kWh - **Gap:** No difference ## Output when hot | Condition | Cell temperature | 480-490W | 485 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 485 W | 485 W | 100.0% of rated power | | Cool, bright day | 40 °C | 466 W | 466 W | 96.1% of rated power | | Typical summer roof | 55 °C | 447 W | 447 W | 92.2% of rated power | | Hot roof | 70 °C | 428 W | 428 W | 88.3% of rated power | ## Against the whole database | Measure | 480-490W | 485 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #513 | #513 | 14,005 | Tied - the same position in the database | | Power density | #495 | #495 | 14,005 | Tied - the same position in the database | | Heat behaviour | #511 | #511 | 14,005 | Tied - the same position in the database | | Weight | #4,932 | #4,932 | 14,005 | Tied - the same position in the database | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #2,601 | #2,601 | 14,005 | Tied - the same position in the database | ## Questions ### Which panel is better: Solar-Fabrik Mono S4 Halfcut BC White 480-490W or Solar-Fabrik Mono S4 Halfcut BC White 485? According to our database: both panels are closely matched on key specs - the decision often comes down to price and local availability. 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 White 480-490W and Solar-Fabrik Mono S4 Halfcut BC White 485? **Solar-Fabrik Mono S4 Halfcut BC White 480-**490 W**** has a module efficiency of **23.75%**, while **Solar-Fabrik Mono S4 Halfcut BC White 485** is **23.75%**. 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 White 480-490W use vs Solar-Fabrik Mono S4 Halfcut BC White 485? **Solar-Fabrik Mono S4 Halfcut BC White 480-**490 W**** uses **Back Contact** cells; **Solar-Fabrik Mono S4 Halfcut BC White 485** uses **Back Contact**. 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 White 480-490W and Solar-Fabrik Mono S4 Halfcut BC White 485? **Solar-Fabrik Mono S4 Halfcut BC White 480-**490 W**** has a **30 years** power warranty; **Solar-Fabrik Mono S4 Halfcut BC White 485** 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 White 480-490W and Solar-Fabrik Mono S4 Halfcut BC White 485 bifacial panels? Both **Solar-Fabrik Mono S4 Halfcut BC White 480-**490 W**** and **Solar-Fabrik Mono S4 Halfcut BC White 485** 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 White 480-490W vs Solar-Fabrik Mono S4 Halfcut BC White 490](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-white-480-490w/solar-fabrik-mono-s4-halfcut-bc-white-490) - One difference: module efficiency - [Solar-Fabrik Mono S4 Halfcut BC White 480-490W vs Solar-Fabrik Mono S4 Halfcut BC Series White 490W](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-white-480-490w/solar-fabrik-mono-s4-halfcut-bc-series-white-490w) - One difference: module efficiency - [Solar-Fabrik Mono S4 Halfcut BC White 480-490W vs Solar-Fabrik Mono S4 Halfcut BC Series White 485W](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-white-480-490w/solar-fabrik-mono-s4-halfcut-bc-series-white-485w) - The same specification on paper - [Solar-Fabrik Mono S4 Halfcut BC White 480-490W vs Solar-Fabrik Mono S4 Halfcut BC White 480](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-white-480-490w/solar-fabrik-mono-s4-halfcut-bc-white-480) - One difference: module efficiency - [Solar-Fabrik Mono S4 Halfcut BC White 480-490W vs Solar-Fabrik S4-DG625-132TMax](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-white-480-490w/solar-fabrik-s4-dg625-132tmax) - 16 differences, the largest is temperature coefficient - [Solar-Fabrik Mono S4 Halfcut BC White 480-490W vs Solar-Fabrik S4-DG620-132TMax](https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-white-480-490w/solar-fabrik-s4-dg620-132tmax) - 16 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/solar-fabrik-mono-s4-halfcut-bc-white-480-490w/solar-fabrik-mono-s4-halfcut-bc-white-485 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.