--- title: "Yingli LF645M10N-78H/BF Solar Panel: Specs & Datasheet | ComparePV" description: "Yingli LF645M10N-78H/BF solar panel. Specs: 23.07% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/yingli-lf645m10n-78h-bf" image: "https://comparepv.com/og/panel/yingli-lf645m10n-78h-bf.png" updated: 2026-09-11 --- # Yingli LF645M10N-78H/BF Solid all-round for its segment 1,085 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** Yingli - **Model:** LF645M10N-78H/BF - **Series:** LF650M10N-78H/BF - **Rated power:** 645 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 600-650 W (1085 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 645 W | 620 W | Strong - top 3% | | | Module efficiency | 23.07% | 22.80% | Typical | 1,733 | | Power density | 230.7 | 227.7 | Typical | 1,704 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,220 | | Weight (kg) | 34.0 kg | 32.8 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.07% | 22.80% | Typical | 1,733 | | Power density | 230.7 | 227.7 | Typical | 1,704 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,220 | | Weight per kWp | 52.7 | 53.1 | Typical | 6,416 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ## Specification ### Electrical - **Rated power (Pmax):** 645 W - **Efficiency:** 23.07 % - **Voltage at Pmax (Vmp):** 46.98 V - **Current at Pmax (Imp):** 13.73 A - **Open-circuit voltage (Voc):** 56.29 V - **Short-circuit current (Isc):** 14.54 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 156 - **Bifacial:** yes - **Bifacial gain:** 20.00 ### Physical - **Length:** 2465 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 34.0 kg - **Area:** 2.80 m2 - **Power density:** 230.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 564 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 1733 of 14129 | | Power density | 1704 of 14129 | | Temperature coefficient | 2220 of 14129 | | Weight | 6416 of 14129 | | Warranty | 21 of 14129 | ## About this series Yingli LF650M10N-78H/BF modules are an advanced solution based on N-type cells that set a new standard of efficiency in professional installations. Thanks to the use of **N-type TOPCon** technology, these panels are characterized by significantly lower light-induced degradation and a better response to low light conditions, which translates into stable and high yields for decades. A key feature of the series is the **bifacial design**, allowing for the generation of additional energy from radiation reflected from the ground, which significantly reduces the levelized cost of energy (LCOE). This is particularly important in large-scale projects and solar farms, where maximizing yield from the available area is crucial. The use of **half-cut** cell technology effectively limits resistance losses and increases the module resistance to spot shading, solving the problem of sudden power drops in more difficult terrain conditions. Choosing this series is an investment in **enhanced mechanical durability** and an excellent temperature coefficient, thanks to which the panels work more efficiently on hot days compared to traditional solutions. This model is an optimal choice for investors focusing on **maximum power density** and long-term energy security in demanding commercial and industrial projects. ## Notable figures - Efficiency of 23.1% matches the \*\*TOPCon 600-650W\*\* median - 230.7 W/m² power density - 3.0 W/m² more than \*\*TOPCon 600-650W\*\* median (227.7 W/m²), more power per roof area - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 600-650W\*\* median - At 34.0 kg, this panel is 1.2 kg heavier than the \*\*TOPCon 600-650W\*\* median (32.8 kg) - more demanding for installation crews - #1733 for efficiency, #2220 for temperature performance out of 14129 panels ## Questions ### What is the difference between N-type TOPCon technology in the Yingli LF650M10N-78H/BF panels and older P-type PERC cells? N-type TOPCon cells have significantly lower light-induced degradation (LID) and respond better to low-light conditions and high temperatures than traditional P-type PERC cells. Thanks to an additional passivation layer on the rear side of the cell, higher conversion efficiency and more stable module performance are achieved throughout the operating lifetime, resulting in higher energy yields over a 25-30 year period. ### How much extra energy does the bifacial design of the LF650M10N-78H/BF module actually generate? The additional energy gain from bifacial panels depends on ground albedo, mounting height, and reflected radiation, typically ranging from 5 to 15 percent in typical ground-mounted installations with a bright surface, and can be higher under optimal conditions such as white gravel or snow. The rear side of the cell captures reflected light, lowering the levelized cost of energy (LCOE), especially in large-scale PV plants. ### What warranty applies to Yingli LF650M10N-78H/BF modules and what does it cover? Yingli offers a 12-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. This means the manufacturer guarantees a specified percentage of nominal power output over three decades, giving investors predictable returns on commercial and industrial projects. ### Are Yingli LF650M10N-78H/BF panels suitable for large solar farms or residential rooftops? The LF650M10N-78H/BF model, with power output up to 650 Wp and a bifacial design, is optimized primarily for large-scale ground-mounted installations and solar farms, where maximizing power density per hectare and minimizing LCOE matter most. Its large dimensions and high unit power output make it less suited to small residential sloped roofs, and better suited for commercial and industrial-scale projects. ### Does half-cut cell technology in the Yingli LF650M10N-78H/BF panels reduce the impact of partial shading? Yes, half-cut cells, split in half, reduce resistive losses and divide the module into independent electrical sections. This means partial shading, such as from clouds, bird droppings, or dirt, causes a smaller power drop across the whole panel compared to full-cell designs, improving energy production stability under challenging field conditions. ### Does Yingli, as a Tier 1 manufacturer from China, guarantee long-term investment security for the LF650M10N-78H/BF panels? Yingli is classified as a Tier 1 manufacturer, meaning strong financial standing and bankability for projects using their panels, which facilitates bank financing. The company has many years of experience producing PV modules at a global scale, and the long-term power and product warranties further secure the investment in commercial and industrial projects. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/lf630-650m10n-78h-bf-62ead29d6659.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +2.1 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +35 W, lighter, +2.1 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +30 W, lighter, +1.9 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +1.9 pp | | [WINAICO WST-675BKX72-A2](https://comparepv.com/panel/winaico-wst-675bkx72-a2) | 675 W | +30 W, cooler, +1.9 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +50 W, cooler, +1.8 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | Cooler, lighter, +1.7 pp | | [Yingli LF630M10N-78H/BF](https://comparepv.com/panel/yingli-lf630m10n-78h-bf) | 630 W | -15 W, -0.5 pp | | [Yingli YL635CF78 e/2](https://comparepv.com/panel/yingli-yl635cf78-e-2) | 635 W | -10 W, -0.4 pp | | [Yingli YL640CF78 e/2](https://comparepv.com/panel/yingli-yl640cf78-e-2) | 640 W | Very close match | | [Yingli YL650CF78 e/2](https://comparepv.com/panel/yingli-yl650cf78-e-2) | 650 W | +0.2 pp | | [Yingli YL655CF78 e/2](https://comparepv.com/panel/yingli-yl655cf78-e-2) | 655 W | +10 W, +0.3 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +55 W, cooler, +1.9 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | Cooler, lighter, +1.7 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +25 W, cooler, +1.7 pp | --- Source: https://comparepv.com/panel/yingli-lf645m10n-78h-bf Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.