--- title: "Longi Solar LR4-72HBD-440M 440W Solar Panel - Specs & Review | ComparePV" description: "Longi Solar LR4-72HBD-440M 440W solar panel. Specs: 20.20% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/longi-lr4-72hbd-440m" updated: 2026-09-11 --- # Longi Solar LR4-72HBD-440M Warranty pick, heavy for its output 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** Longi Solar - **Model:** LR4-72HBD-440M - **Series:** Hi-MO 4 (LR4-72HBD 440~460M) - **Rated power:** 440 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 400-450 W (954 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 440 W | 410 W | Strong - top 15% | | | Module efficiency | 20.20% | 20.60% | Weak - bottom 19% | 11,956 | | Power density | 202.4 | 206.2 | Weak - bottom 21% | 11,857 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 24% | 8,778 | | Weight (kg) | 27.5 kg | 22.0 kg | Weak - bottom 5% | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 17% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.20% | 20.60% | Weak - bottom 19% | 11,956 | | Power density | 202.4 | 206.2 | Weak - bottom 21% | 11,857 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 24% | 8,778 | | Weight per kWp | 62.5 | 53.0 | Weak - bottom 5% | 12,777 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 17% | 21 | ### Strengths - **30 year performance warranty** - Top 17% of the PERC 400-450 W segment, against a median of 25 yrs. - **-0.340 %/°C temperature coefficient** - Top 24% of the PERC 400-450 W segment, against a median of -0.350. ### Watch out for - **62.5 kg per kWp** - Bottom 5% of the PERC 400-450 W segment, against a median of 53.0. Ranked 12,777th in the whole database. - **20.20% module efficiency** - Bottom 19% of the PERC 400-450 W segment, against a median of 20.60%. - **202.4 watts per square metre** - Bottom 21% of the PERC 400-450 W segment, against a median of 206.2. - **Best for:** Commercial and shaded-installations. - **Not ideal for:** Weight-limited structures, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 440 W - **Efficiency:** 20.20 % - **Voltage at Pmax (Vmp):** 41.00 V - **Current at Pmax (Imp):** 10.73 A - **Open-circuit voltage (Voc):** 49.20 V - **Short-circuit current (Isc):** 11.45 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.265 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 - **Bifacial:** yes ### Physical - **Length:** 2094 mm - **Width:** 1038 mm - **Thickness:** 35 mm - **Weight:** 27.5 kg - **Area:** 2.17 m2 - **Power density:** 202.4 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:** 374 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11956 of 14005 | | Power density | 11857 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 12777 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Bifacial glass-glass construction** - Glass-glass lamination combined with bifacial technology can recover up to an additional 25% of energy from the rear side under high-albedo surfaces (rooftop, gravel, membrane), while the construction itself supports a 30-year service life. - **Half-cut PERC cells, low LID/PID** - The half-cut monocrystalline PERC cell layout reduces losses under partial shading and hot-spot risk, while annual power degradation below 0.45% and resistance to LID and PID ensure predictable energy yield throughout the module's lifetime. - **Tier-1 manufacturer per BNEF** - LONGi Solar, operating since 2000, has consistently appeared on the BNEF Tier 1 list (confirmed as of Q1 2023), reflecting documented bankability and access to non-recourse bank financing - important for large commercial installations and utility-scale PV plants. - **30-year linear power warranty** - The manufacturer offers a 30-year linear power output warranty, exceeding the 25-year power warranties that were standard among most PERC-segment competitors at the time of this series' launch. - **1500V system compatibility** - A maximum system voltage of 1500V combined with a Pmax temperature coefficient of -0.35%/°C enables longer module strings and reduced BoS costs (wiring, inverters, mounting structures) - relevant for large-scale utility and tracker-based installations. ## Cons - **Production discontinued (2023)** - The Hi-MO 4 series was discontinued in 2023, meaning limited availability of replacement modules in case of failure and more difficult warranty claims over the remaining multi-year term - investors should plan for potential replacement with a different series in the event of repairs. - **Efficiency below current TOPCon peers** - Efficiency of 20.2-21.2% is notably lower than comparable, newer N-type TOPCon modules (e.g. Phono Solar Draco or SunKean SKT440-460M12-96D4 reaching up to 23.02%), meaning lower power output for the same roof area. - **Fire rating limited to Class C** - The datasheet lists only Class C fire rating per UL790, while some newer competing modules offer Class A - this can restrict use on pitched roofs near other buildings where local codes require a higher fire safety class. - **Product warranty limited to 12 years** - The standard product (materials and workmanship) warranty is only 12 years, whereas newer N-type module series on the market now offer 15-25 years of product warranty, reducing long-term investment security relative to current standards. ## About this series Longi Solar Hi-MO 4 (LR4-72HBD 440~460M) modules combine **bifacial construction** with **glass-glass lamination**, enabling them to significantly increase energy yield, even when light reflects off the ground (such as light roofs, gravel, or membranes). The application of **PERC monocrystalline cells in a half-cut configuration** helps minimize losses due to partial shading and reduces the risk of hot spots, leading to more stable system performance under challenging conditions. A key advantage of this series is its **resistance to LID and PID degradation**, which is crucial for investors seeking reliable, long-term energy production. These modules are suitable for both commercial rooftop installations and large-scale PV farms, as well as tracker projects, where durability and long-term reliability are paramount. Against many competitive panels, they stand out through the practical combination of high glass-glass durability and the benefits of bifacial technology-without compromising daily operation. ## Notable figures - At 20.2% efficiency, this panel is on par with typical \*\*PERC 400-450W\*\* modules - 202.4 W/m² power density is 3.8 W/m² below \*\*PERC 400-450W\*\* median (206.2 W/m²) - requires larger installation area - Temperature coefficient of -0.34%/°C matches the \*\*PERC 400-450W\*\* median - At 27.5 kg (5.5 kg above \*\*PERC 400-450W\*\* median of 22.0 kg), requires checking roof load capacity - Bifacial design (70% factor) captures reflected light - adds 4-10% yield on ground-mount or white roof ## Questions ### Is the LONGi Solar Hi-MO 4 LR4-72HBD 440~460M series still available for purchase? The Hi-MO 4 (LR4-72HBD 440~460M) series has been discontinued by LONGi Solar and is no longer in active production. New units may still be found in limited quantities from distributors clearing warehouse stock. Buyers planning a new installation should consider current LONGi product lines such as Hi-MO 5 or Hi-MO 6, which deliver higher efficiency ratings and full manufacturer support. ### What warranty does the LONGi Hi-MO 4 LR4-72HBD carry and what does it cover? The Hi-MO 4 LR4-72HBD comes with a 12-year product warranty covering materials and workmanship, plus a 30-year linear power output warranty. After 30 years of operation, LONGi guarantees at least 84.95% of nameplate power. This extended linear warranty is particularly relevant when calculating LCOE for commercial rooftop systems and utility-scale PV farms. ### How does bifacial technology work in the LONGi Hi-MO 4 LR4-72HBD and when does it make financial sense? The bifacial Hi-MO 4 generates power from both the front and rear faces by capturing light reflected off the ground surface. Bifacial gain typically ranges from 5–15% depending on the albedo of the surface below. Maximum gains are achieved over light-colored gravel, white TPO membranes, or concrete, and in ground-mount installations with single-axis trackers. On dark or flush-mounted rooftops, the rear-side contribution is minimal. ### How does the Hi-MO 4 LR4-72HBD 460M handle partial shading from chimneys or antennas? The half-cut cell layout (144 cells split into two independent strings) limits the impact of partial shading to the affected section while the rest of the module continues producing at full capacity. Combined with LID and PID resistance, this stabilizes long-term output under real-world conditions. For persistent or heavy shading, adding DC optimizers or microinverters is still advisable to maximize system yield. ### What are the dimensions and weight of the LONGi Hi-MO 4 LR4-72HBD — does it fit a standard racking system? The module measures 2094 x 1038 x 30 mm and weighs approximately 27.5 kg. This is a 72-cell commercial-format panel, larger and heavier than typical 60-cell residential modules. Before installation, verify the load-bearing capacity of the roof structure and confirm that the racking rail spacing is compatible, as mounting hardware designed for smaller-format panels may not align correctly with this module. ### Why does the LONGi Hi-MO 4 LR4-72HBD use glass-glass lamination and what are the real-world benefits? Glass-glass construction replaces the standard rear backsheet with a second glass layer, significantly improving moisture resistance, chemical durability, and resistance to mechanical degradation over time. The module is rated for snow loads up to 5400 Pa and wind loads up to 2400 Pa, making it suitable for ground-mount farms, flat commercial rooftops, and agrivoltaic projects where long-term structural integrity under environmental stress is critical. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Hi-MO-4-LR-4-72-HBD-440-460-M-35-30-and-10-V16-12d0c8087f-7a0d7b15d18a.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +4.3 pp | | [Suntech STP-NT11/48QGSF-490](https://comparepv.com/panel/suntech-stp-nt11-48qgsf-490) | 490 W | Cooler, lighter, +4.3 pp | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | Cooler, lighter, +4.1 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | Cooler, lighter, +4.1 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | Cooler, lighter, +4.1 pp | | [Gokin GK-5-54HG-485M](https://comparepv.com/panel/gokin-gk-5-54hg-485m) | 485 W | Cooler, lighter, +4.1 pp | | [Heckert Solar ZEUS 3.0+ 108 485WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-485wp) | 485 W | +45 W, cooler, +4.1 pp | | [Longi Solar LR4-72HIH-445M](https://comparepv.com/panel/longi-lr4-72hih-445m) | 445 W | Lighter, +0.3 pp, -5 yr warranty | | [Longi Solar LR4-72HIH-450M](https://comparepv.com/panel/longi-lr4-72hih-450m) | 450 W | Lighter, +0.5 pp, -5 yr warranty | | [Longi Solar LR4-72HIH-455M](https://comparepv.com/panel/longi-lr4-72hih-455m) | 455 W | Lighter, +0.7 pp, -5 yr warranty | | [Gamko New Energy GKA120N-PRO-590W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-590w) | 590 W | +150 W, cooler, +3.6 pp | | [Gamko New Energy GKA120N-PRO-585W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-585w) | 585 W | +145 W, cooler, +3.4 pp | | [Bisol BGO 580](https://comparepv.com/panel/bisol-bgo-580) | 580 W | +140 W, cooler, +3.3 pp | | [Gamko New Energy GKA120N-PRO-580W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-580w) | 580 W | +140 W, cooler, +3.2 pp | --- Source: https://comparepv.com/panel/longi-lr4-72hbd-440m 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.