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SunLink Brand review

SL5M144-550

550 Wp PERC Bifacial 5000%
ComparePV verdict

Warranty pick, heavy for its output

Rank 6,980 of 14,005
Compare panels Datasheet PDF
Power (Wp)
550
Weak · bottom 15%
Efficiency (%)
21.30
Typical · median 21.29%
Density (Wp/m²)
212.8
Typical · median 212.9
Temp (%/°C)
-0.350
Typical · median -0.350
Weight (kg)
32.0
Weak · 1.2 kg above median
Warranty (yrs)
30
Strong · top 25%

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.

Ranking

589 panels in the segment PERC 550-600 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.30% 21.29% Typical 8,519
Power density 212.8 212.9 Typical 8,643
Temperature coefficient -0.350 -0.350 Typical 10,419
Weight per kWp 58.2 52.7 Weak · bottom 25% 11,595
Performance warranty 30 yrs 27 yrs Strong · top 25% 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

1 positive · 1 caution
Best for

Residential, commercial and utility-scale.

Not ideal for

Weight-limited structures.

Strengths
30 year performance warranty

Top 25% of the PERC 550-600 W segment, against a median of 27 yrs.

Watch-outs
58.2 kg per kWp

Bottom 25% of the PERC 550-600 W segment, against a median of 52.7.

Notes from the database
  • Efficiency of 21.3% matches the PERC 550-600W median
  • Power density of 212.8 W/m² matches the PERC 550-600W median
  • At -0.35%/°C, hot weather performance is typical for PERC 550-600W panels
  • Weight of 32.0 kg is 1.2 kg above PERC 550-600W median (30.8 kg) - verify structural support
  • Ranked #8519 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 550 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.30 % Typical Segment median 21.29%
Vmpp · Impp 41.97 V · 13.10 A Operating point at max power
Voc · Isc 49.90 V · 14.00 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2279×1134×35 mm · 2.58 m² of roof
Weight 32.0 kg Weak Weak · 1.2 kg above median
Cells 144 · PERC Monocrystalline
Bifaciality 5000 % Rear output as a share of front
Coefficient Pmax -0.350 %/°C Typical median -0.350 of its segment
Coefficient Voc · Isc -0.275 · 0.045 %/°C
NOCT 44 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Strong top 25% · median 27 yrs
End-of-warranty output 85.0 % Equals 467 W guaranteed
Degradation 2.00 → 0.45 % First year, then annual

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-
With bifacial gain
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.350 %/°C against a segment median of -0.350
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
SunLink SL5M144-550 550 W 21.30% -0.350 32.0 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, lighter, +3.7 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg Cooler, lighter, +3.5 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, lighter, +3.4 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg Cooler, lighter, +3.3 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, lighter, +3.2 pp
SL5M144-535 535 W 20.70% -0.350 32.0 kg -15 W, -0.6 pp
SL5M144-540 540 W 20.90% -0.350 32.0 kg -10 W, -0.4 pp
SL5M144-545 545 W 21.10% -0.350 32.0 kg Very close match
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +100 W, cooler, +3.9 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +95 W, cooler, +3.7 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg +90 W, cooler, +3.5 pp
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg +85 W, cooler, +3.3 pp
AIKO-A630-MAH72Dw 630 W 24.40% -0.260 32.5 kg +80 W, cooler, +3.1 pp

Found 2326 panels of the same or similar size to this one, within ±10 mm. See them here Found 2368 panels of the same or similar size to this one, within ±25 mm. See them here Found 2382 panels of the same or similar size to this one, within ±50 mm. See them here Found 2542 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
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.
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