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Longi Solar Brand review

LR4-72HIH-445M

445 Wp PERC
ComparePV verdict

Strong in heat, no clear weak spot

Rank 11,385 of 14,005
Compare panels Datasheet PDF
Power (Wp)
445
Strong · top 5%
Efficiency (%)
20.50
Typical · median 20.60%
Density (Wp/m²)
204.7
Typical · median 206.2
Temp (%/°C)
-0.340
Strong · top 24%
Weight (kg)
24.3
Typical · median 22.0 kg
Warranty (yrs)
25
Typical · median 25 yrs

The Longi Solar Hi-MO 4m (LR4-72HIH 445~465M) series was designed for high energy yield from every square meter, especially in locations where installation power and stable performance under real-world conditions matter. The use of monocrystalline PERC cells and the half-cut cell configuration minimizes resistive losses and helps maintain output when part of the module is temporarily shaded - a practical advantage for rooftops near chimneys, windows, or installations close to trees. Furthermore, the construction with multi-busbar interconnection improves current conduction and enhances resistance to micro-cracking during transportation and operation in wind and snow. In daily operation, resistance to PID and limitation of the LID effect are also important, translating to slower degradation and more predictable yield over the coming years. This makes it an excellent choice for both residential and commercial installations, where reliable yield, aesthetic mounting, and guaranteed parameters over a long period are expected.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.50% 20.60% Typical 11,308
Power density 204.7 206.2 Typical 11,478
Temperature coefficient -0.340 -0.350 Strong · top 24% 8,778
Weight per kWp 54.6 53.0 Typical 8,956
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 3 caution
Best for

Residential, commercial and shaded-installations.

Strengths
-0.340 %/°C temperature coefficient

Top 24% of the PERC 400-450 W segment, against a median of -0.350.

What owners get
Tier-1 manufacturer with strong track record

Longi Solar (founded in 2000) is consistently confirmed as a Tier-1 manufacturer by BloombergNEF, supporting bankability - easier project financing from banks and insurers. It is one of the world's largest producers of mono wafers and cells.

Half-cut cells and multi busbar design

Half-cut PERC cells combined with multi-busbar interconnection reduce resistive losses and improve mechanical resistance to microcracks during transport, snow load, and wind. In practice this improves yield under partial shading (chimneys, dormers, nearby trees).

Solid efficiency for a PERC-generation module

Efficiency of 20.5-21.4% sits in the upper range of PERC-technology performance for the 2021-2023 period, comparable to competing PERC/mono modules in the same 445-465 Wp power segment.

PID resistance and reduced LID

The design mitigates potential-induced degradation (PID) and limits the light-induced degradation (LID) effect, resulting in slower aging and more predictable energy output during the module's early years of operation.

Trade-offs
Production discontinued (2023)

The Hi-MO 4m LR4-72HIH series was manufactured from 2021 to 2023 and is no longer part of the manufacturer's current lineup. This limits availability of identical modules for system expansion and may complicate warranty service in the long run.

Efficiency lags current segment leaders

Peak efficiency of 21.4% trails comparable 465 Wp modules - Jinko JS182MHC120 (21.48%) and Vikram Solar SOMERA (21.51%) - while TOPCon technology (e.g., Luxor ECO LINE Glass-Glass, 23.6%) clearly surpasses the older PERC architecture.

No bifacial technology

The module is monofacial, whereas comparable competitor series (e.g., Luxor Solar TOPCon glass-glass bifacial) offer additional rear-side yield, particularly valuable on high-albedo surfaces or ground-mounted installations.

Notes from the database
  • At 20.5% efficiency, this panel is on par with typical PERC 400-450W modules
  • Power density of 204.7 W/m² matches the PERC 400-450W median
  • Temperature coefficient of -0.34%/°C matches the PERC 400-450W median
  • Weight of 24.3 kg is 2.3 kg above PERC 400-450W median (22.0 kg) - verify structural support
  • #11308 for efficiency, #8778 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 445 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.50 % Typical Segment median 20.60%
Vmpp · Impp 41.30 V · 10.78 A Operating point at max power
Voc · Isc 49.10 V · 11.53 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2094×1038×35 mm · 2.17 m² of roof
Weight 24.3 kg Typical Typical · median 22.0 kg
Cells 144 · PERC Monocrystalline
Coefficient Pmax -0.340 %/°C Strong top 24% of its segment
Coefficient Voc · Isc -0.265 · 0.050 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 84.8 % Equals 365 W guaranteed
Degradation 2.00 → 0.55 % 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
-

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

Heat losses
-0.340 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Longi Solar LR4-72HIH-445M 445 W 20.50% -0.340 24.3 kg You are here
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +50 W, cooler, +4.3 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, +4.0 pp, +5 yr warranty
STP-NT11/48QGSF-490 490 W 24.50% -0.260 21.5 kg Cooler, +4.0 pp, +5 yr warranty
JAT54S40-485/LR 485 W 24.30% -0.260 19.3 kg Cooler, lighter, +3.8 pp
AIKO-A485-MCE54Mw 485 W 24.30% -0.260 21.0 kg Cooler, +3.8 pp, +5 yr warranty
LR7-54HJD-495M 495 W 24.30% -0.240 23.5 kg +50 W, cooler, +3.8 pp
AIKO-A485-MAH54Mw 485 W 24.30% -0.260 21.5 kg Cooler, +3.8 pp, +5 yr warranty
LR4-72HBD-440M 440 W 20.20% -0.340 27.5 kg Heavier, -0.3 pp, +5 yr warranty
LR4-72HIH-450M 450 W 20.70% -0.340 24.3 kg Very close match
LR4-72HIH-455M 455 W 20.90% -0.340 24.3 kg +10 W, +0.4 pp
GKA120N-PRO-590W 590 W 23.82% -0.300 26.7 kg +145 W, +3.3 pp, +5 yr warranty
GKA120N-PRO-585W 585 W 23.62% -0.300 26.7 kg +140 W, +3.1 pp, +5 yr warranty
BGO 580 580 W 23.50% -0.290 26.0 kg +135 W, cooler, +3.0 pp
GKA120N-PRO-580W 580 W 23.42% -0.300 26.7 kg +135 W, +2.9 pp, +5 yr warranty

Found 234 panels of the same or similar size to this one, within ±10 mm. See them here Found 325 panels of the same or similar size to this one, within ±25 mm. See them here Found 352 panels of the same or similar size to this one, within ±50 mm. See them here Found 1158 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Is the Longi Solar Hi-MO 4m LR4-72HIH series still available for purchase?
The Hi-MO 4m (LR4-72HIH 445–465M) series has been discontinued by Longi Solar. Panels may still be found as remaining distributor stock, but are no longer in production. If you need a currently manufactured Longi panel, consider newer series such as Hi-MO 6 or Hi-MO X6, which offer higher efficiency and updated warranty terms.
What warranty does the Longi Solar Hi-MO 4m LR4-72HIH come with?
Longi provided a 12-year product warranty covering manufacturing defects and a 25-year linear power warranty. According to the datasheet, the module should retain at least 84.8% of its rated power output after 25 years. Since the series is discontinued, verify with your distributor that the Longi warranty terms are still being honored before purchasing remaining stock.
What are half-cut PERC cells and why do they matter in the Hi-MO 4m series?
Half-cut technology splits each standard cell in two, reducing resistive losses and lowering operating temperatures. Combined with monocrystalline PERC architecture, the cells achieve higher conversion efficiency. The practical benefit is improved performance under partial shading — for example from a chimney or dormer — because a shaded section of the module has a smaller impact on the output of the entire string.
What mechanical loads can the Longi Hi-MO 4m LR4-72HIH handle?
According to the datasheet, the module is rated for snow loads up to 5400 Pa and wind loads up to 2400 Pa. The aluminum frame and 3.2 mm tempered glass provide solid resilience for climates with heavy snowfall and strong winds. The multi busbar design also reduces the risk of micro-cracks in cells during transport and under cyclical thermal stress.
Does the Longi Hi-MO 4m 465W perform well on a roof with partial shading?
It performs better than conventional full-cell modules thanks to the half-cut layout and multi busbar interconnection, which limit the impact of localized shading. That said, for roofs with significant shading issues, adding power optimizers or microinverters will provide a more complete solution by allowing each panel to operate independently of the rest of the array.
What are the dimensions and weight of the Longi Solar Hi-MO 4m LR4-72HIH 465M panel?
The module measures 2094 × 1038 × 35 mm and weighs approximately 24.3 kg. Its large 144-cell format means fewer modules are needed to reach your target system power, which can reduce racking and labor costs. Before installation, confirm your roof structure can support the load, especially on older timber-framed roofs.
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