--- title: "SunLink SL5M144-545 545W Solar Panel - Specs & Review | ComparePV" description: "SunLink SL5M144-545 545W solar panel. Specs: 21.10% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sunlink-sl5m144-545" updated: 2026-09-11 --- # SunLink SL5M144-545 Efficiency leader, heavy for its output 706 panels in the segment PERC 500-550 W ## Identity - **Manufacturer:** SunLink - **Model:** SL5M144-545 - **Series:** SL5M144 - **Rated power:** 545 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 500-550 W (706 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 545 W | 535 W | Strong - top 12% | | | Module efficiency | 21.10% | 20.90% | Strong - top 20% | 9,297 | | Power density | 210.9 | 209.0 | Typical | 9,399 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight (kg) | 32.0 kg | 28.4 kg | Weak - bottom 23% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.10% | 20.90% | Strong - top 20% | 9,297 | | Power density | 210.9 | 209.0 | Typical | 9,399 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight per kWp | 58.7 | 53.0 | Weak - bottom 23% | 11,844 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **21.10% module efficiency** - Top 20% of the PERC 500-550 W segment, against a median of 20.90%. ### Watch out for - **58.7 kg per kWp** - Bottom 23% of the PERC 500-550 W segment, against a median of 53.0. - **Best for:** Residential, commercial and utility-scale. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 545 W - **Efficiency:** 21.10 % - **Voltage at Pmax (Vmp):** 41.81 V - **Current at Pmax (Imp):** 13.04 A - **Open-circuit voltage (Voc):** 49.75 V - **Short-circuit current (Isc):** 13.93 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.275 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 - **Bifacial:** yes - **Bifacial gain:** 50.00 ### Physical - **Length:** 2279 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 32.0 kg - **Area:** 2.58 m2 - **Power density:** 210.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 85.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.45 % - **Output after 30 years:** 463 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 9297 of 14005 | | Power density | 9399 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 11844 of 14005 | | Warranty | 21 of 14005 | ## About this series The SunLink SL5M144 series comprises monocrystalline modules designed for high power density and stable operation under real rooftop and commercial conditions. A key feature is **SEMI+MBB integration**, which combines solutions that minimize internal losses and improve power generation, resulting in better performance not only in full sunlight but also in less favorable weather conditions. Another significant advantage is **increased mechanical strength without added weight** - crucial in situations where structural safety and long-term durability are paramount. The modules feature **tempered glass with an anti-reflective coating**, which helps to better utilize radiation at low angles of incidence, typical for Polish autumn and winter. Reliability is also ensured by an **IP68-rated junction box** and rigorous testing in demanding conditions. The SL5M144 is an excellent choice for residential, commercial, and agricultural installations where high efficiency, durability, and predictable DC chain performance are desired. ## Notable figures - Efficiency of 21.1% matches the \*\*PERC 500-550W\*\* median - Power density of 210.9 W/m² matches the \*\*PERC 500-550W\*\* median - Temperature coefficient of -0.35%/°C matches the \*\*PERC 500-550W\*\* median - At 32.0 kg (3.6 kg above \*\*PERC 500-550W\*\* median of 28.4 kg), requires checking roof load capacity - #9297 for efficiency, #10419 for temperature performance out of 14005 panels ## Questions ### Are the SunLink SL5M144 panels bifacial, and what does that mean for my system? Yes, the SL5M144 series is bifacial, meaning the modules generate power from direct irradiance on the front and from light reflected off the ground onto the rear surface. With a light-colored surface beneath the array — such as white gravel, roofing membrane, or snow — annual energy yield can be several percent higher than a single-sided module with the same 550 Wp nameplate power. ### What warranty do the SunLink SL5M144 modules carry, and does it cover power degradation? SunLink provides a 12-year product warranty covering material and workmanship defects, plus a 30-year linear power warranty. Over three decades the panel is guaranteed to retain a specified minimum percentage of its nominal 550 Wp output. This warranty scope is on par with premium-tier modules and provides a predictable basis for calculating return on investment. ### How do the SL5M144 panels perform on overcast days and during cold Central European winters? Very well. The SEMI+MBB integration in SL5M144 improves current collection under diffuse irradiance, which is common during autumn and winter. The anti-reflective coated tempered glass captures more light at low incidence angles typical of northern latitudes. The IP68-rated junction box seals out moisture and frost, and PERC monocrystalline cells have a low temperature coefficient that supports output on cold but sunny days. ### What is PERC technology in the SL5M144 and is it worth choosing over standard mono panels? PERC (Passivated Emitter and Rear Cell) adds a passivation layer on the rear of a standard mono-Si cell that reflects unabsorbed photons back into the silicon absorber and reduces carrier recombination. The result is higher conversion efficiency than conventional mono-Si without the cost premium of HJT or TOPCon technology. For rooftops with limited area, more watts per square meter translates directly to a faster payback period. ### How many cells does the SL5M144 have, and will it fit on a typical pitched residential roof? The SL5M144 series features 144 half-cut PERC cells and a peak power of 550 Wp. A typical 144-cell module measures approximately 2278 by 1134 mm and weighs around 28–30 kg. On a standard gable roof with 30–40 m² of usable area you can fit 10 to 16 panels, yielding a system of 5.5–8.8 kWp — sufficient for most single-family homes. ### SunLink is not a Tier 1 manufacturer — is that a risk when choosing the SL5M144 series? Tier 1 classification comes from Bloomberg NEF bankability rankings and reflects a manufacturer's financial creditworthiness, not panel quality. The SL5M144 undergoes rigorous mechanical testing, and the 12/30-year warranty demonstrates the manufacturer's long-term commitment. It is advisable to ask your distributor about warranty insurance or manufacturer insolvency coverage, which significantly reduces financial risk over a 30-year investment horizon. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/SL5M144-perc-a6f40363a216.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +3.9 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +3.7 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.7 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +3.6 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.5 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +3.4 pp | | [SunLink SL5M144-535](https://comparepv.com/panel/sunlink-sl5m144-535) | 535 W | -10 W, -0.4 pp | | [SunLink SL5M144-540](https://comparepv.com/panel/sunlink-sl5m144-540) | 540 W | -0.2 pp | | [SunLink SL5M144-550](https://comparepv.com/panel/sunlink-sl5m144-550) | 550 W | Very close match | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +105 W, cooler, +4.1 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +100 W, cooler, +3.9 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +95 W, cooler, +3.7 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +90 W, cooler, +3.5 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +85 W, cooler, +3.3 pp | --- Source: https://comparepv.com/panel/sunlink-sl5m144-545 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.