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Longi Solar LR4-72HPH-445M
Longi Solar Brand review

LR4-72HPH-445M

445 Wp PERC
ComparePV verdict

Strong in heat, no clear weak spot

Rank 11,465 of 14,129
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 (LR4-72HPH 445~465M) series was designed to deliver a stable yield and predictable performance for the entire string under real installation conditions. In practice, its unique feature is the combination of PERC monocrystalline cells with half-cut construction, which helps minimize internal resistance losses and better handles partial shading typical of roofs with chimneys, window openings, or attic installations. An additional advantage is the multi-busbar connections, which support current collection from the cells and improve the module’s resistance to micro-cracks during transportation and operation on the structure.

The Hi-MO 4m also utilizes gallium doping, enabling easier degradation control over time and maintaining a favorable energy production curve for years. This solution is particularly sensible for residential, commercial, and industrial installations, where high power density on the roof and compatibility with popular string inverters and optimizers are key.

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 11,389
Power density 204.7 206.2 Typical 11,558
Temperature coefficient -0.340 -0.350 Strong · top 24% 8,846
Weight per kWp 54.6 53.0 Typical 9,038
Performance warranty 25 yrs 25 yrs Typical 9,912
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 4 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
Bankable Tier-1 manufacturer

Longi Solar has operated since 2000 and is a global BNEF Tier 1 leader, which simplifies project financing and lowers risk perception for banks and insurers on commercial and industrial installations.

Half-cut + multi busbar reduce losses

The half-cut cell layout combined with multi-busbar interconnection reduces internal resistance losses and improves module resistance to microcracks during transport and roof-mounted operation.

Gallium doping stabilizes output

Gallium-doped cells limit LID (Light Induced Degradation), keeping the energy production curve more predictable in the early years of operation compared to standard boron-doped PERC.

High power density up to 465 Wp

With efficiency up to 21.4% and power up to 465 Wp on a 72-cell module, the series offers good power density per roof area, which matters where mounting surface is limited in residential and commercial installations.

Compatible with common inverters

The module's voltage/current parameters fall within typical operating windows of string inverters and power optimizers, simplifying BoS component selection and string design.

Trade-offs
Production ended in 2023

The Hi-MO 4m series was discontinued (produced 2021-2023) in favor of newer N-type lines (Hi-MO 6/7/9), meaning limited availability of identical modules for string top-ups and potentially longer warranty-claim handling.

Efficiency lags newer TOPCon peers

Maximum efficiency of 21.4% trails comparable models such as Jinko Solar JS182MHC120 (21.48%) and Vikram Solar SOMERA (21.51%), and falls clearly behind bifacial TOPCon panels like Luxor ECO LINE (23.6%), showing this PERC series is already a generation behind.

Shorter 12-year product warranty

The product warranty runs 12 years, while newer Tier-1 series (including Longi's own N-type lines) typically offer 20-25 years, which combined with discontinued production raises long-term risk for investors.

No bifacial variant

The series is monofacial (is_bifacial: false), so it cannot capture the extra rear-side yield offered by competing bifacial modules, such as Luxor's ECO LINE TOPCON GLASS-GLASS BIFACIAL at the same 465 Wp maximum power.

Notes from the database
  • Efficiency of 20.5% matches the PERC 400-450W median
  • At 204.7 W/m² power density, roof space requirements are typical for PERC 400-450W panels
  • Temperature coefficient of -0.34%/°C matches the PERC 400-450W median
  • At 24.3 kg, this panel is 2.3 kg heavier than the PERC 400-450W median (22.0 kg) - more demanding for installation crews
  • Ranked #11389 out of 14129 panels for efficiency in the database

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

Datasheet charts

Open datasheet PDF

Measured curves published by Longi Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 445 Wp appear here. The rest cover the whole series.

25-Year Power Warranty 25-Year Power Warranty Whole series

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 LR4-72HPH-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 1172 panels of the same or similar size to this one, within ±100 mm. See them here

About the Hi-MO 4m (LR4-72HPH 445~465M) series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

Is the Longi Solar Hi-MO 4m (LR4-72HPH 445~465M) series still available for purchase?
The Hi-MO 4m (LR4-72HPH 445~465M) series has been discontinued and is no longer part of LONGi Solar's active lineup. Limited stock may still be available through some distributors' warehouses. If you need current LONGi products, newer series offer higher efficiency and updated warranty terms. Always verify actual availability with your local distributor before planning a new installation around this model.
What warranty does the Longi Hi-MO 4m LR4-72HPH come with?
LONGi provides a 12-year product warranty covering defects in materials and workmanship, along with a 25-year linear power warranty guaranteeing at least 84.8% of nominal output by year 25. Annual linear degradation is capped at 0.55%, with first-year degradation not exceeding 2%. As a Tier 1 manufacturer, LONGi's warranty credibility is backed by a strong financial track record in the industry.
Why does the Hi-MO 4m use gallium doping, and does it make a real difference?
Gallium doping replaces the traditional boron dopant and virtually eliminates Light-Induced Degradation (LID), which causes conventional PERC cells to lose several percent of output during initial sun exposure. In practice, this means the module skips the early performance dip and maintains a predictable, linear production curve for the full 25-year power warranty period - a meaningful advantage when modeling long-term energy yield and LCOE for any installation.
Are the Longi Hi-MO 4m LR4-72HPH panels a good fit for roofs with chimneys or dormers?
Yes. The half-cut cell design (144 cells split into two independent halves) limits the impact of partial shading from chimneys, dormers, or parapets to only one section of the module, leaving the other half fully operational. The multi busbar interconnection further reduces internal resistance losses. This makes the Hi-MO 4m a practical choice for typical residential roofs with shading obstacles common in Polish and Central European installations.
How does the Hi-MO 4m perform in cold temperatures and low winter irradiance?
The power temperature coefficient is -0.34%/°C, meaning output actually increases slightly below the STC reference temperature of 25°C - beneficial during cold, sunny winter days. Monocrystalline PERC cells also respond better to the diffuse, low-angle light spectrum typical of overcast winter skies compared to older polycrystalline technology. Both factors matter in climates with short winter days and frequent cloud cover.
Are the Longi Hi-MO 4m LR4-72HPH modules compatible with standard inverters and power optimizers?
Yes. The LR4-72HPH series features an open-circuit voltage (Voc) of approximately 49-50 V per module, making it compatible with leading string inverters from SMA, Fronius, Huawei, and SolarEdge. The modules work seamlessly with SolarEdge and Tigo power optimizers for module-level monitoring and MPPT. Always verify your inverter's MPPT voltage range against the planned string configuration before finalizing the system design.
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