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Longi Solar LR4-60HPB-360M
Longi Solar Brand review

LR4-60HPB-360M

360 Wp PERC
ComparePV verdict

Strong in heat, no clear weak spot

Rank 12,803 of 14,129
Compare panels Datasheet PDF
Power (Wp)
360
Weak · bottom 13%
Efficiency (%)
19.80
Typical · median 19.90%
Density (Wp/m²)
197.6
Typical · median 199.0
Temp (%/°C)
-0.340
Strong · top 15%
Weight (kg)
19.5
Typical · median 21.4 kg
Warranty (yrs)
25
Typical · median 25 yrs

Longi Solar Hi-MO 4m (LR4-60HPB 355-375M) are monocrystalline modules designed for maximum stable energy production under real operating conditions-including when parts of the roof are intermittently shaded or the installation operates at elevated temperatures. The use of half-cut cells helps minimize internal resistance losses and improves module performance under non-uniform irradiance, resulting in more predictable annual yields. Another key feature is the multi-busbar structure, which enables more efficient current transport and increases resistance to micro-cracks during daily operation. In practice, this series addresses typical challenges faced by installers and users-power drops on specific roof sections, sensitivity to hot spots, and the risk of accelerated degradation. For investors, this translates to higher reliability and consistent energy returns without the need for oversized installations. The Hi-MO 4m performs well in both residential and commercial applications, where the compact 120-cell format, easy integration with standard inverters, and hassle-free installation on rooftops and ground structures are key advantages.

Ranking

579 panels in the segment PERC 350-400 W
Metric This panel Median Position in segment Overall rank
Module efficiency 19.80% 19.90% Typical 12,501
Power density 197.6 199.0 Typical 12,529
Temperature coefficient -0.340 -0.350 Strong · top 15% 8,846
Weight per kWp 54.2 55.8 Typical 8,449
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 · 2 caution
Best for

Residential, commercial and shaded-installations.

Strengths
-0.340 %/°C temperature coefficient

Top 15% of the PERC 350-400 W segment, against a median of -0.350.

What owners get
Tier-1 manufacturer, high bankability

Longi Solar (founded in 2000, China) has maintained BloombergNEF Tier 1 status for PV modules continuously, and holds an AAA rating in the PV-Tech ModuleTech Bankability Ratings for 25 consecutive quarters (as of Q1 2026). This meaningfully eases project financing even for a discontinued series.

Half-cut cells with multi-busbar design

Half-cut cell technology combined with a multi-busbar structure reduces internal resistance losses and improves resistance to micro-cracks and hot-spot effects under partial shading - a common issue in rooftop installations with chimneys or antennas.

Competitive efficiency up to 20.6%

Module efficiency of 19.5-20.6% places the series on par with ENCOR EC (20.59%) and clearly above Boviet Solar VEGA (20%) at the same 375 Wp maximum power, translating into a smaller footprint for the same installed capacity.

Compact 120-cell format

Dimensions of 1755 x 1038 x 35 mm and a weight of 19.5 kg simplify integration with typical string inverters and mounting on both pitched roofs and ground-mount structures, without requiring non-standard mounting solutions.

Standard Tier-1 warranty terms

A 12-year product warranty and 25-year power warranty guaranteeing 84.8% output at year 25 match the industry standard for Tier-1 manufacturers from the 2021-2023 era, providing predictable long-term yield.

Trade-offs
Discontinued production (2023)

The Hi-MO 4m series launched in 2021 and was discontinued in 2023. This means limited service availability, restricted access to spare parts, and difficulty sourcing matching modules to expand an existing installation in the future.

Older PERC cell technology

The maximum 20.6% efficiency, based on PERC cells, trails newer solutions in the segment, e.g., JS Solar JSHC166M120 (21.3% at the same 375 Wp power), meaning lower energy yield per roof area for comparable pricing.

Notes from the database
  • Efficiency of 19.8% matches the PERC 0-400W median
  • At 197.6 W/m² power density, this panel generates 3.4 W/m² more per unit area than PERC 0-400W median (194.2 W/m²)
  • At -0.34%/°C, hot weather performance is typical for PERC 0-400W panels
  • At 19.5 kg, weight matches the PERC 0-400W median
  • In the top 88% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 360 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 19.80 % Typical Segment median 19.90%
Vmpp · Impp 34.80 V · 10.35 A Operating point at max power
Voc · Isc 40.80 V · 11.33 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1755×1038×35 mm · 1.82 m² of roof
Weight 19.5 kg Typical Typical · median 21.4 kg
Cells 120 · PERC Monocrystalline
Coefficient Pmax -0.340 %/°C Strong top 15% 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 295 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 LR4-60HPB-360M 360 W 19.80% -0.340 19.5 kg You are here
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +3.3 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +3.3 pp
GKA210M320W 320 W 23.00% - 16.2 kg -40 W, +3.2 pp, +5 yr warranty
GKA210M340W 340 W 23.00% - 16.2 kg Lighter, +3.2 pp, +5 yr warranty
GKA210M360W 360 W 23.00% - 16.2 kg Lighter, +3.2 pp, +5 yr warranty
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg Lighter, +3.2 pp, +5 yr warranty
GKA210M400W (1/2*4*20) 400 W 23.00% - 18.0 kg +40 W, +3.2 pp, +5 yr warranty
GKA210M400W (1/4*4*40) 400 W 23.00% - 18.0 kg +40 W, +3.2 pp, +5 yr warranty
GKA210M380W (1/2*4*19) 380 W 23.00% - 17.1 kg Lighter, +3.2 pp, +5 yr warranty
SPR-MAX3-400-COM 400 W 22.60% -0.270 19.0 kg Cooler, +2.8 pp, +15 yr warranty
LR4-60HPB-355M 355 W 19.50% -0.340 19.5 kg -0.3 pp
LR4-60HPB-365M 365 W 20.00% -0.340 19.5 kg Very close match
LR4-60HPB-370M 370 W 20.30% -0.340 19.5 kg +10 W, +0.5 pp
LR4-60HPB-375M 375 W 20.60% -0.340 19.5 kg +15 W, +0.8 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +150 W, cooler, +5.2 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +135 W, cooler, +5.0 pp

Found 210 panels of the same or similar size to this one, within ±10 mm. See them here Found 271 panels of the same or similar size to this one, within ±25 mm. See them here Found 332 panels of the same or similar size to this one, within ±50 mm. See them here Found 4194 panels of the same or similar size to this one, within ±100 mm. See them here

About the Hi-MO 4m (LR4-60HPB 355~375M) 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 LR4-60HPB 355-375M series still available for purchase?
The Hi-MO 4m LR4-60HPB series has been discontinued and is no longer part of Longi Solar's active product catalog. Occasional stock may still exist at distributors' warehouses, but regular new supply is unavailable. Investors planning a new installation should consider newer Longi series such as Hi-MO 5m or Hi-MO 6, which offer higher power output and updated warranties.
What warranty does the Longi Hi-MO 4m LR4-60HPB come with?
The manufacturer provides a 12-year product warranty covering material and workmanship defects, along with a 25-year linear power output warranty. After 25 years of operation, the module is guaranteed to retain at least 84.8% of its nominal power output. As a Tier 1 manufacturer, Longi Solar offers solid service support, though for a discontinued series it is worth confirming the warranty claims process with your distributor.
What are half-cut cells in the Hi-MO 4m and why do they matter for shading?
Half-cut cell technology splits each standard PERC cell into two smaller ones. Each half-cell operates at a lower current, reducing resistive losses and minimizing hot-spot risk. In practice, when a chimney or dormer shades part of the roof, half of the module can still generate power without dragging down the entire string. For Hi-MO 4m installations on roofs with obstructions, this results in significantly better annual energy yield compared to conventional full-size cells.
How does the Longi Hi-MO 4m LR4-60HPB perform in high summer temperatures?
The module features a power temperature coefficient of -0.34%/°C, which is among the better values for PERC technology. At a module temperature of 65°C - a typical summer scenario on a Polish rooftop - the power loss relative to STC conditions is approximately 13.6%. The combination of half-cut cells and a 120-cell 6×20 configuration further limits heat build-up in individual sections, resulting in more stable output on hot days.
Are Longi Hi-MO 4m LR4-60HPB panels compatible with standard inverters and mounting systems?
Yes, the dimensions of 1755×1038×35 mm and a weight of 19.5 kg fall within standard norms for 120-cell format modules. The panel is compatible with common roof and ground-mount racking systems and with inverters in the MPPT voltage range of 30-45 V. The open-circuit voltage range for the 355-375 W series allows several modules per string without exceeding the input limits of popular single-phase 3-6 kW inverters.
How does the Longi Hi-MO 4m LR4-60HPB compare to the Hi-MO 5 series, and is buying Hi-MO 4m on the secondary market worth it?
The Hi-MO 4m is a 120 half-cut PERC module with 9-busbar technology, a maximum power of 375 W, and efficiency up to 19.55%. The newer Hi-MO 5 series introduced a larger M10 wafer format, power output above 540 W, and improved degradation resistance. Purchasing Hi-MO 4m on the secondary market can make sense when expanding an existing installation based on this series to maintain consistent string parameters. For a new build, newer series deliver a better cost-to-yield ratio.
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