--- title: "Sunlike Solar SKT440M10-108D6 440W Solar Panel - Specs & Review | ComparePV" description: "Sunlike Solar SKT440M10-108D6 440W solar panel. Specs: 22.53% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sunlike-solar-skt440m10-108d6" updated: 2026-09-11 --- # Sunlike Solar SKT440M10-108D6 Space saver, weak in heat 113 panels in the segment HJT 400-450 W ## Identity - **Manufacturer:** Sunlike Solar - **Model:** SKT440M10-108D6 - **Series:** SKT430~440M10-108D6 - **Rated power:** 440 W - **Cell technology:** HJT - **Bifacial:** yes ## How it compares Compared against segment HJT 400-450 W (113 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 440 W | 435 W | Typical | | | Module efficiency | 22.53% | 22.20% | Strong - top 20% | 3,982 | | Power density | 225.3 | 221.6 | Strong - top 17% | 4,099 | | Temperature coefficient | -0.260 | -0.240 | Weak - bottom 23% | 511 | | Weight (kg) | 22.0 kg | 23.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.53% | 22.20% | Strong - top 20% | 3,982 | | Power density | 225.3 | 221.6 | Strong - top 17% | 4,099 | | Temperature coefficient | -0.260 | -0.240 | Weak - bottom 23% | 511 | | Weight per kWp | 50.0 | 52.4 | Typical | 3,317 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **225.3 watts per square metre** - Top 17% of the HJT 400-450 W segment, against a median of 221.6. - **22.53% module efficiency** - Top 20% of the HJT 400-450 W segment, against a median of 22.20%. ### Watch out for - **-0.260 %/°C temperature coefficient** - Bottom 23% of the HJT 400-450 W segment, against a median of -0.240. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 440 W - **Efficiency:** 22.53 % - **Voltage at Pmax (Vmp):** 35.12 V - **Current at Pmax (Imp):** 12.53 A - **Open-circuit voltage (Voc):** 41.91 V - **Short-circuit current (Isc):** 13.05 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.260 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** HJT - **Cell count:** 108 - **Bifacial:** yes - **Bifacial gain:** 20.00 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 22.0 kg - **Area:** 1.95 m2 - **Power density:** 225.3 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 88.0 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.38 % - **Output after 30 years:** 387 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 3982 of 14005 | | Power density | 4099 of 14005 | | Temperature coefficient | 511 of 14005 | | Weight | 3317 of 14005 | | Warranty | 21 of 14005 | ## About this series The Sunlike Solar SKT430~440M10-108D6 series is designed to maximize energy output from a limited mounting area, without compromising on durability and aesthetics. The use of **N-type cells in TOPCon technology** ensures stable operation at high temperatures and reduces susceptibility to typical degradation phenomena, which in turn supports the long-term profitability of the installation. The **half-cut design with multiple busbars** helps minimize losses and better cope with partial shading, such as from chimneys or skylights. The **bifacial version with double glass** can also utilize reflected light from the ground, which will be appreciated by investors installing modules on bright roofs, on the ground, or on structures above membranes. The entire system is complemented by **IP68 protection class** and a focus on mechanical resistance, which is important in Polish wind and snow conditions. This is a good choice for premium home installations, commercial roofs, and projects where high power density, appearance, and predictable energy production over the years are important. ## Notable figures - Efficiency of 22.5% matches the \*\*HJT 400-450W\*\* median - At 225.3 W/m² power density, this panel generates 3.7 W/m² more per unit area than \*\*HJT 400-450W\*\* median (221.6 W/m²) - At -0.26%/°C, loses 0.02pp more power per degree than \*\*HJT 400-450W\*\* median (-0.24%/°C) - Weight of 22.0 kg is typical for \*\*HJT 400-450W\*\* panels - Bifacial design (84% factor) captures reflected light - adds 4-13% yield on ground-mount or white roof ## Questions ### What warranty does Sunlike Solar offer on the SKT430~440M10-108D6 series? The SKT430~440M10-108D6 series comes with a 15-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. This means the manufacturer guarantees a defined minimum percentage of the module's nominal power output after three decades of use — solid terms for N-type TOPCon modules and a strong assurance for the investor over the full system lifetime. ### Are the SKT430~440M10-108D6 panels a good fit for roofs with partial shading from chimneys or dormers? Yes. The half-cut cell design with multiple busbars splits each cell into two independent halves, significantly limiting the shading impact on the entire module. When one section is shaded, the remaining cells continue operating efficiently. This is a key advantage on typical Polish pitched roofs with chimneys, dormers, or satellite dishes that cast partial shadows. ### What makes the TOPCon technology in the SKT430~440M10-108D6 series stand out, and is it worth the extra cost? TOPCon is an N-type cell technology that uses a thin tunnel oxide and polysilicon passivation layer to reduce carrier recombination. In practice, this means higher efficiency than older PERC technology, a better temperature coefficient (less power loss on hot days), and lower susceptibility to PID and LID degradation. Over a 30-year power warranty period, these differences translate into meaningfully more energy produced and a faster return on investment. ### Does the bifacial double-glass design of the SKT430~440M10-108D6 make sense for a typical rooftop installation in Poland? The bifacial gain — harvesting energy from reflected light on the rear side — delivers real benefits mainly on highly reflective surfaces such as white roofing membranes, light-colored gravel, or ground-mount systems. On a typical dark-gray pitched roof, rear-side power contribution is minimal. However, the double-glass construction instead of a back sheet significantly improves moisture resistance and mechanical durability, which is a concrete advantage over a 30-year service life in Poland's climate. ### What types of installations are the Sunlike Solar SKT430~440M10-108D6 panels best suited for? With output up to 440 Wp, the SKT430~440M10-108D6 series is well suited for premium residential rooftop systems where high power density is needed on limited roof space, commercial flat rooftops, and ground-mount installations on reflective substrates. The bifacial double-glass variant performs especially well on structures above a white roofing membrane or light-colored gravel ballast. ### How does the IP68 rating affect the long-term reliability of SKT430~440M10-108D6 panels in Polish weather conditions? IP68 provides complete dust protection and resistance to sustained water immersion, meaning the junction box remains sealed against heavy rain, snowmelt, and prolonged moisture. In Poland, where modules must endure repeated freeze-thaw cycles and wet winters, IP68 is a meaningful advantage over panels with lower-rated junction box sealing and contributes directly to long-term system reliability. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/1-2-skt430-440m10-108d6-fb-bmg-1-6mm-b07f4e51766d.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +50 W, lighter, +2.0 pp | | [Suntech STP-NT11/48QGSF-490](https://comparepv.com/panel/suntech-stp-nt11-48qgsf-490) | 490 W | +50 W, +2.0 pp | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | +45 W, lighter, +1.8 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +45 W, lighter, +1.8 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +45 W, +1.8 pp | | [Gokin GK-5-54HG-485M](https://comparepv.com/panel/gokin-gk-5-54hg-485m) | 485 W | +45 W, lighter, +1.8 pp | | [Heckert Solar ZEUS 3.0+ 108 485WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-485wp) | 485 W | +45 W, heavier, +1.8 pp | | [Sunlike Solar LNVB-395M](https://comparepv.com/panel/sunlike-solar-lnvb-395m) | 395 W | Hotter, -2.3 pp, -5 yr warranty | | [Sunlike Solar LNVB-400M](https://comparepv.com/panel/sunlike-solar-lnvb-400m) | 400 W | Hotter, -2.1 pp, -5 yr warranty | | [Sunlike Solar LNVB-405M](https://comparepv.com/panel/sunlike-solar-lnvb-405m) | 405 W | Hotter, -1.8 pp, -5 yr warranty | | [Sunlike Solar SKT410M10-108D4](https://comparepv.com/panel/sunlike-solar-skt410m10-108d4) | 410 W | -30 W, hotter, -1.5 pp | | [Sunlike Solar SKT415M10-108D4](https://comparepv.com/panel/sunlike-solar-skt415m10-108d4) | 415 W | -25 W, hotter, -1.2 pp | | [Sunlike Solar SKT420M10-108D4](https://comparepv.com/panel/sunlike-solar-skt420m10-108d4) | 420 W | -20 W, hotter, -1.0 pp | | [Sunlike Solar SKT425M10-108D4](https://comparepv.com/panel/sunlike-solar-skt425m10-108d4) | 425 W | -15 W, hotter, -0.7 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +70 W, cooler, +2.5 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +55 W, lighter, +2.3 pp | --- Source: https://comparepv.com/panel/sunlike-solar-skt440m10-108d6 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.