--- title: "Sunlike Solar LNET-660MD 660W Solar Panel - Specs & Review | ComparePV" description: "Sunlike Solar LNET-660MD 660W solar panel. Specs: 21.25% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sunlike-solar-lnet-660md" updated: 2026-09-11 --- # Sunlike Solar LNET-660MD Middle of its segment, short guarantee 5,083 panels in the 560-760 W band, all technologies ## Identity - **Manufacturer:** Sunlike Solar - **Model:** LNET-660MD - **Series:** SERIES 6 - **Rated power:** 660 W - **Cell technology:** Monocrystalline - **Bifacial:** yes ## How it compares Compared against 560-760 W band, all technologies (5083 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 660 W | 620 W | Strong - top 25% | | | Module efficiency | 21.25% | 22.54% | Weak - bottom 11% | 8,904 | | Power density | 212.5 | 225.4 | Weak - bottom 11% | 8,959 | | Temperature coefficient | -0.340 | -0.290 | Weak - bottom 14% | 8,778 | | Weight (kg) | 34.0 kg | 32.7 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 7% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.25% | 22.54% | Weak - bottom 11% | 8,904 | | Power density | 212.5 | 225.4 | Weak - bottom 11% | 8,959 | | Temperature coefficient | -0.340 | -0.290 | Weak - bottom 14% | 8,778 | | Weight per kWp | 51.5 | 53.1 | Typical | 4,883 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 7% | 9,798 | ### Watch out for - **25 year performance warranty** - Bottom 7% of the 560-760 W band, against a median of 30 yrs. Ranked 9,798th in the whole database. - **212.5 watts per square metre** - Bottom 11% of the 560-760 W band, against a median of 225.4. - **21.25% module efficiency** - Bottom 11% of the 560-760 W band, against a median of 22.54%. - **Not ideal for:** Owners who want a long output guarantee, roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 660 W - **Efficiency:** 21.25 % - **Voltage at Pmax (Vmp):** 38.02 V - **Current at Pmax (Imp):** 17.36 A - **Open-circuit voltage (Voc):** 45.75 V - **Short-circuit current (Isc):** 18.48 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell count:** 132 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 35 mm - **Weight:** 34.0 kg - **Area:** 3.11 m2 - **Power density:** 212.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.50 % - **Annual degradation:** 0.53 % - **Output after 30 years:** 542 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8904 of 14005 | | Power density | 8959 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 4883 of 14005 | | Warranty | 9798 of 14005 | ## About this series Sunlike Solar SERIES 6 photovoltaic panels introduce a new level of quality thanks to the use of **M10 cell technology**, which translates into significantly higher energy conversion efficiency compared to older module generations. This series has been designed to maximize yields from limited roof space, making it an ideal choice for both modern home installations and large-scale commercial farms. A key technological differentiator is the advanced **Multi-Busbar (MBB) system**, which effectively reduces losses resulting from internal resistance and minimizes the risk of harmful micro-cracks. Thanks to a low temperature coefficient, these modules maintain high efficiency even during hot summer days, directly solving the problem of power drops under intense sunlight. The durable frame construction ensures exceptional resistance to extreme mechanical loads, guaranteeing the safety and reliability of the system for decades. By choosing SERIES 6, the investor receives **full protection against the PID effect** and excellent performance characteristics in diffused light, which clearly distinguishes these products from cheaper alternatives. This is a solution dedicated to professionals for whom the priority is **high power density** and maximum investment profitability in the long-term perspective. ## Notable figures - Efficiency of 21.2% is 0.6pp below the \*\*database\*\* median (21.8%) - 212.5 W/m² power density is 5.6 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - -0.34%/°C temperature coefficient - 0.04pp worse than \*\*database\*\* median (-0.30%/°C), expect higher hot weather losses - At 34.0 kg, this panel is 7.5 kg heavier than the \*\*database\*\* median (26.5 kg) - more demanding for installation crews - Ranked #8904 out of 14005 panels for efficiency in the database ## Questions ### What warranty does the Sunlike Solar SERIES 6 come with? Sunlike Solar backs the SERIES 6 with two separate warranties: a 12-year product warranty covering defects in materials and workmanship, and a 25-year linear power output warranty. The 25-year power guarantee lets homeowners and commercial investors confidently calculate long-term return on investment, knowing the modules will maintain rated performance for a quarter of a century. ### Do Sunlike Solar SERIES 6 675 W panels lose significant power output during hot summer days? The SERIES 6 uses PERC M10 cells with a low temperature coefficient, which limits power loss at high operating temperatures compared to older-generation modules. This means the panels continue generating strong output during peak summer heat, directly improving annual energy yield and lowering the effective LCOE of the installation over its lifetime. ### What is Multi-Busbar (MBB) technology in the SERIES 6 and why does it matter? Multi-Busbar replaces a few thick busbars with many thin wires spread across the cell surface. This shortens the current path, reducing resistive losses and significantly lowering the risk of microcracks forming during shipping and operation. For the system owner it means higher module efficiency and better durability across the full 25-year power warranty period. ### Is the Sunlike Solar SERIES 6 a bifacial or monofacial module? The Sunlike Solar SERIES 6 is a monofacial module — it captures sunlight from the front face only and does not feature bifacial cell technology. This eliminates the need for a high-albedo ground surface or elevated racking structures required by bifacial modules, simplifying system design and keeping balance-of-system (BoS) costs lower. ### What is PID and are SERIES 6 panels protected against it? Potential Induced Degradation (PID) is a gradual power loss caused by high system voltage and moisture penetrating the module. It is a serious concern in large-scale string inverter systems running at 1000–1500 V DC. Sunlike Solar SERIES 6 panels are engineered with full PID resistance, ensuring rated power output is maintained throughout the entire 25-year performance warranty. ### Do M10 PERC cells in the SERIES 6 deliver more power from a limited roof area? Yes. The M10 wafer format (182 mm) is one of the latest cell generations in high-volume production. Combined with PERC technology and Multi-Busbar interconnection, it enables high power density per square meter. The SERIES 6 reaches up to 675 Wp per panel, delivering more kilowatts from the same roof footprint than modules based on older 166 mm or 156 mm cell formats. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/210-132CELL-650-670W-TRANSPARENT-BS-6c1d23b19bd7.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +3.9 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Cooler, lighter, +3.9 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | Cooler, lighter, +3.8 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +3.8 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Cooler, +3.8 pp, +5 yr warranty | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | Cooler, +3.6 pp, +5 yr warranty | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | Cooler, lighter, +3.6 pp | | [Sunlike Solar LNET-650MD](https://comparepv.com/panel/sunlike-solar-lnet-650md) | 650 W | -10 W, -0.3 pp | | [Sunlike Solar LNET-655M](https://comparepv.com/panel/sunlike-solar-lnet-655m) | 655 W | Very close match | | [Sunlike Solar LNET-665M](https://comparepv.com/panel/sunlike-solar-lnet-665m) | 665 W | Very close match | | [Sunlike Solar LNET-670M](https://comparepv.com/panel/sunlike-solar-lnet-670m) | 670 W | +10 W, +0.3 pp | | [Sunlike Solar LNET-675M](https://comparepv.com/panel/sunlike-solar-lnet-675m) | 675 W | +15 W, +0.5 pp | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +145 W, cooler, +3.9 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +140 W, cooler, +3.6 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +135 W, cooler, +3.6 pp | | [AIKO AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 W | +130 W, cooler, +3.4 pp | --- Source: https://comparepv.com/panel/sunlike-solar-lnet-660md Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.