--- title: "SunLink SL5M108-400 400W Solar Panel - Specs & Review | ComparePV" description: "SunLink SL5M108-400 400W solar panel. Specs: 20.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sunlink-sl5m108-400" updated: 2026-09-11 --- # SunLink SL5M108-400 Solid all-round for its segment 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** SunLink - **Model:** SL5M108-400 - **Series:** SL5M108 - **Rated power:** 400 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 400-450 W (954 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 400 W | 410 W | Weak - bottom 9% | | | Module efficiency | 20.50% | 20.60% | Typical | 11,308 | | Power density | 204.8 | 206.2 | Typical | 11,370 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight (kg) | 21.5 kg | 22.0 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.50% | 20.60% | Typical | 11,308 | | Power density | 204.8 | 206.2 | Typical | 11,370 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight per kWp | 53.8 | 53.0 | Typical | 7,774 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | - **Best for:** Residential, commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 400 W - **Efficiency:** 20.50 % - **Voltage at Pmax (Vmp):** 31.01 V - **Current at Pmax (Imp):** 12.90 A - **Open-circuit voltage (Voc):** 37.05 V - **Short-circuit current (Isc):** 13.79 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.270 %/degC - **Temperature coefficient of Isc:** 0.048 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 108 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.5 kg - **Area:** 1.95 m2 - **Power density:** 204.8 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:** 328 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11308 of 14005 | | Power density | 11370 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 7774 of 14005 | | Warranty | 9798 of 14005 | ## About this series The SunLink SL5M108 series consists of compact monocrystalline modules with a 108-cell array, designed to maximize energy output from a limited roof area without complicating the installation. The use of **half-cut cell technology** helps to minimize losses and better cope with partial shading, while **SMBB technology** supports a more stable current output and reduces the risk of local overheating. This translates into more reliable performance in typical Polish conditions, from cold mornings to hot days on a dark roof. In practice, the SL5M108 also stands out due to its **full black aesthetic**, which makes the installation look consistent on modern roofs. The modules feature an **IP68 sealed junction box**, which facilitates operation in humid and weather-prone environments, as well as being designed for use in more demanding environments (e.g., higher humidity, sea fog). This makes it a good choice for homes, small businesses, and projects where power density, appearance, and predictable energy production are important. ## Notable figures - At 20.5% efficiency, this panel is on par with typical \*\*PERC 400-450W\*\* modules - At 204.8 W/m² power density, roof space requirements are typical for \*\*PERC 400-450W\*\* panels - Temperature coefficient of -0.35%/°C matches the \*\*PERC 400-450W\*\* median - Ranked #11308 out of 14005 panels for efficiency in the database ## Questions ### Is the SunLink SL5M108 series still available for purchase? The SunLink SL5M108 series has been discontinued and is no longer offered through regular sales channels. New units may occasionally appear at distributors with remaining stock. If you're set on this series, check availability directly with your retailer. Otherwise, consider newer SunLink series with comparable or improved specifications as a practical alternative. ### What warranty does the SunLink SL5M108 come with? SunLink provides a 15-year product warranty and a 30-year linear power output warranty for the SL5M108 series. The power warranty guarantees that modules will maintain performance above a defined degradation curve over 30 years. Since SunLink is not a Tier 1 manufacturer, it's worth verifying the supplier's financial stability and service policy when assessing long-term investment risk. ### What is TOPCon technology and what does it mean for SL5M108 performance? TOPCon (Tunnel Oxide Passivated Contact) is an advanced monocrystalline cell technology featuring a thin passivation layer that reduces charge carrier recombination. Compared to standard PERC cells, it delivers higher overall efficiency, better output under diffuse light conditions, and a lower temperature coefficient — meaning less power loss on hot days. Combined with the 108 half-cut cell layout and SMBB, the SL5M108 provides stable, season-round output. ### How do SunLink SL5M108 modules handle partial shading and harsh weather conditions? The 108 half-cut cell configuration allows each cell to operate more independently, limiting power losses caused by partial shading from chimneys or antennas. SMBB (Super Multi Busbar) further supports stable current flow and reduces the risk of localized hotspots. The IP68-rated junction box provides a watertight seal against moisture and extreme temperature swings — common factors in Central European climate conditions. ### Are SunLink SL5M108 Full Black panels suitable for rooftops with strict aesthetic requirements? Yes. The SL5M108 is available in a Full Black configuration with a black frame, black backsheet, and black cells. The result is a uniform, sleek rooftop appearance without the silver contrast typical of standard modules. This makes it a popular choice for modern residential architecture or projects governed by homeowners' association guidelines or building permit aesthetic conditions. ### What is the maximum power output of the SunLink SL5M108, and how many panels are needed for a home system? The SL5M108 has a rated maximum power output of 430 Wp. For a typical household consuming 4,000–5,000 kWh per year, 8–12 modules are generally sufficient, depending on roof orientation, local irradiance, and actual energy consumption. The compact 108-cell format makes it easier to fit adequate system capacity onto smaller roof sections without sacrificing total installed power. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/SL5M108-perc-Full-Black-877b8a36d37c.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Luxor Solar LX-440M/182-108+GG](https://comparepv.com/panel/luxor-solar-lx-440m-182-108-gg) | 440 W | Cooler, +2.6 pp, +5 yr warranty | | [Just Solar JST-EDMH-(445-465)W-TD (450W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-450w-class) | 450 W | +50 W, +2.6 pp, +5 yr warranty | | [Q-SUN Solar QNN182-HG450-54](https://comparepv.com/panel/qn-solar-pv-limited-qnn182-hg450-54) | 450 W | +50 W, cooler, +2.5 pp | | [Huayao HY440-N108BDD](https://comparepv.com/panel/huayao-hy440-n108bdd) | 450 W | +50 W, +2.5 pp, +5 yr warranty | | [BYD NLBK-27-450](https://comparepv.com/panel/byd-nlbk-27-450) | 450 W | +50 W, +2.5 pp, +5 yr warranty | | [Renesola RS41-450NBG-E3](https://comparepv.com/panel/renesola-rs41-450nbg-e3) | 450 W | +50 W, cooler, +2.5 pp | | [SunLink SL5M108-405](https://comparepv.com/panel/sunlink-sl5m108-405) | 405 W | Very close match | | [SunLink SL5M108-410](https://comparepv.com/panel/sunlink-sl5m108-410) | 410 W | +10 W, +0.5 pp | | [SunLink SL5M108-415](https://comparepv.com/panel/sunlink-sl5m108-415) | 415 W | Cooler, +0.8 pp, +5 yr warranty | | [SunLink SL5N108-420W](https://comparepv.com/panel/sunlink-sl5n108-420w) | 420 W | Cooler, +1.0 pp, +5 yr warranty | | [SunLink SL5N108-425W](https://comparepv.com/panel/sunlink-sl5n108-425w) | 425 W | Cooler, +1.3 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +110 W, cooler, +4.5 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +95 W, cooler, +4.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +105 W, cooler, +4.2 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +90 W, cooler, +4.0 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +100 W, cooler, +4.0 pp | --- Source: https://comparepv.com/panel/sunlink-sl5m108-400 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.