--- title: "Yingli LF485M10-66H Solar Panel: Specs & Datasheet | ComparePV" description: "Yingli LF485M10-66H solar panel. Specs: 20.40% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/yingli-lf485m10-66h" image: "https://comparepv.com/og/panel/yingli-lf485m10-66h.png" updated: 2026-09-11 --- # Yingli LF485M10-66H Middle of its segment, modest efficiency 452 panels in the segment PERC 450-500 W ## Identity - **Manufacturer:** Yingli - **Model:** LF485M10-66H - **Series:** LF505M10-66H - **Rated power:** 485 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 450-500 W (452 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 485 W | 460 W | Strong - top 25% | | | Module efficiency | 20.40% | 20.82% | Weak - bottom 12% | 11,680 | | Power density | 204.2 | 208.5 | Weak - bottom 14% | 11,640 | | Temperature coefficient | -0.354 | -0.350 | Weak - bottom 12% | 12,365 | | Weight (kg) | 26.5 kg | 24.5 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.40% | 20.82% | Weak - bottom 12% | 11,680 | | Power density | 204.2 | 208.5 | Weak - bottom 14% | 11,640 | | Temperature coefficient | -0.354 | -0.350 | Weak - bottom 12% | 12,365 | | Weight per kWp | 54.6 | 53.1 | Typical | 9,086 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | ### Watch out for - **20.40% module efficiency** - Bottom 12% of the PERC 450-500 W segment, against a median of 20.82%. - **-0.354 %/°C temperature coefficient** - Bottom 12% of the PERC 450-500 W segment, against a median of -0.350. - **204.2 watts per square metre** - Bottom 14% of the PERC 450-500 W segment, against a median of 208.5. - **Not ideal for:** Tight roof space, hot climates and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 485 W - **Efficiency:** 20.40 % - **Voltage at Pmax (Vmp):** 37.86 V - **Current at Pmax (Imp):** 12.81 A - **Open-circuit voltage (Voc):** 45.48 V - **Short-circuit current (Isc):** 13.59 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.354 %/degC - **Temperature coefficient of Voc:** -0.266 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 132 ### Physical - **Length:** 2094 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 26.5 kg - **Area:** 2.37 m2 - **Power density:** 204.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 398 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11680 of 14129 | | Power density | 11640 of 14129 | | Temperature coefficient | 12365 of 14129 | | Weight | 9086 of 14129 | | Warranty | 9912 of 14129 | ## About this series The Yingli LF505M10-66H series focuses on **advanced N-type cell technology**, which effectively eliminates the problem of light-induced degradation and guarantees stable module operation for decades. Thanks to the use of M10 standard silicon wafers and a precise half-cut design, these panels show significantly lower susceptibility to the negative effects of shading, which directly translates into higher energy yields in real-world weather conditions. What particularly distinguishes this series is its **high power density**, allowing for the generation of more electricity from every square meter of available surface. The LF505M10-66H series solves the dilemma between performance and durability by offering an **excellent temperature coefficient**, which helps the system maintain high efficiency even during extreme summer heat. This is a solution dedicated primarily to modern residential and commercial installations where a fast return on investment is key. The use of **multi-busbar technology** further strengthens cell resistance to micro-cracks and optimizes the flow of electrical charges. Compared to older technologies, this series offers **better performance in low-light conditions**, making it an unrivaled choice in the Polish climate and providing investors with maximum predictability of energy gains. ## Notable figures - Efficiency of 20.4% matches the \*\*PERC 450-500W\*\* median - 204.2 W/m² power density is 4.2 W/m² below \*\*PERC 450-500W\*\* median (208.5 W/m²) - requires larger installation area - Temperature coefficient of -0.35%/°C matches the \*\*PERC 450-500W\*\* median - At 26.5 kg, this panel is 2.0 kg heavier than the \*\*PERC 450-500W\*\* median (24.5 kg) - more demanding for installation crews - Ranked #11680 out of 14129 panels for efficiency in the database ## Questions ### What is the actual power output of Yingli LF505M10-66H panels and how much energy can I generate? The LF505M10-66H series reaches a maximum power of 505 Wp thanks to M10 silicon wafers and half-cut cell design, which increases power density per square meter. For a typical residential 6-8 kWp installation, this means fewer modules are needed compared to older series, reducing the required roof surface area. ### What warranty comes with Yingli LF505M10-66H panels? The manufacturer provides a 12-year product warranty covering material and workmanship defects, plus a 25-year power output warranty guaranteeing a minimum generation level throughout the panel's lifetime. This is standard for tier 1 manufacturers like Yingli and gives investors predictable returns on their PV installation. ### How does PERC cell technology in the Yingli LF505M10-66H differ from standard monocrystalline cells? PERC cells feature an additional rear passivation layer that reflects unused photons back into the cell, boosting efficiency. Combined with the half-cut and multi-busbar technology used in this series, this results in better resistance to microcracks and improved low-light performance, which matters in Poland's climate conditions. ### Do Yingli LF505M10-66H panels perform well on hot days? Yes, the LF505M10-66H series has an excellent temperature coefficient, meaning less power loss as module temperature rises above the standard 25°C. In practice, this means the system loses less energy on hot summer days compared to panels built with older technologies, maintaining high electricity output. ### Is Yingli a trustworthy manufacturer, and where are LF505M10-66H panels made? Yingli is a Chinese manufacturer classified as tier 1, indicating strong financial stability, in-house production lines, and inclusion on Bloomberg New Energy Finance's list of reputable PV module suppliers. This status translates into greater confidence in warranty enforcement compared to smaller, lesser-known brands. ### Are Yingli LF505M10-66H panels bifacial? No, the LF505M10-66H series consists of monofacial panels, meaning they generate energy only from the front side of the module. This is standard for typical rooftop installations, where a lack of reflected light from the ground means bifacial panels would offer no additional benefit. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/5-ee881da6bd40.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, +4.6 pp, +5 yr warranty | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +4.4 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, +4.3 pp, +5 yr warranty | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | Cooler, +4.3 pp, +5 yr warranty | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +4.1 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, +4.1 pp, +5 yr warranty | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +4.1 pp | | [Yingli LF490M10-66H](https://comparepv.com/panel/yingli-lf490m10-66h) | 490 W | +0.2 pp | | [Yingli LF495M10-66H](https://comparepv.com/panel/yingli-lf495m10-66h) | 495 W | +10 W, +0.4 pp | | [Yingli LF500M10-66H](https://comparepv.com/panel/yingli-lf500m10-66h) | 500 W | +15 W, +0.7 pp | | [Yingli LF505M10-66H](https://comparepv.com/panel/yingli-lf505m10-66h) | 505 W | +20 W, +0.9 pp | | [Gamko New Energy GKA120N-PRO-590W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-590w) | 590 W | +105 W, cooler, +3.4 pp | | [Gamko New Energy GKA120N-PRO-585W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-585w) | 585 W | +100 W, cooler, +3.2 pp | | [Bisol BGO 580](https://comparepv.com/panel/bisol-bgo-580) | 580 W | +95 W, cooler, +3.1 pp | | [Gamko New Energy GKA120N-PRO-580W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-580w) | 580 W | +95 W, cooler, +3.0 pp | --- Source: https://comparepv.com/panel/yingli-lf485m10-66h Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.