--- title: "JS Solar JS182MHC108-405 405W Solar Panel - Specs & Review | ComparePV" description: "JS Solar JS182MHC108-405 405W solar panel. Specs: 20.70% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/js-solar-js182mhc108-405" updated: 2026-09-11 --- # JS Solar JS182MHC108-405 Middle of its segment, short guarantee 6,665 panels in the 305-505 W band, all technologies ## Identity - **Manufacturer:** JS Solar - **Model:** JS182MHC108-405 - **Series:** JS182MHC108 - **Rated power:** 405 W - **Cell technology:** Monocrystalline ## How it compares Compared against 305-505 W band, all technologies (6665 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 405 W | 435 W | Typical | | | Module efficiency | 20.70% | 21.30% | Typical | 10,764 | | Power density | 207.2 | 212.8 | Typical | 10,749 | | Temperature coefficient | -0.340 | -0.300 | Typical | 8,778 | | Weight (kg) | 21.5 kg | 22.6 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 18% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.70% | 21.30% | Typical | 10,764 | | Power density | 207.2 | 212.8 | Typical | 10,749 | | Temperature coefficient | -0.340 | -0.300 | Typical | 8,778 | | Weight per kWp | 53.1 | 53.2 | Typical | 6,847 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 18% | 9,798 | ### Watch out for - **25 year performance warranty** - Bottom 18% of the 305-505 W band, against a median of 30 yrs. - **Best for:** Residential, shaded-installations and hot-climate. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 405 W - **Efficiency:** 20.70 % - **Voltage at Pmax (Vmp):** 30.97 V - **Current at Pmax (Imp):** 13.08 A - **Open-circuit voltage (Voc):** 37.24 V - **Short-circuit current (Isc):** 13.69 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell count:** 108 ### Physical - **Length:** 1724 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.5 kg - **Area:** 1.96 m2 - **Power density:** 207.2 Wp/m2 ### Warranty and degradation - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 332 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10764 of 14005 | | Power density | 10749 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 6847 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Half-Cut 108-cell technology** - Splitting cells in half reduces internal resistance by ~50% compared to standard cells, cutting resistive losses and improving output under partial shading by 10–15%. The 108-cell layout on a 182 mm wafer keeps module dimensions (1724×1134×35 mm, 21.5 kg) installer-friendly for residential rooftops. - **Favorable temperature coefficient** - Pmax temperature coefficient is -0.34%/°C, placing this series at the better end of the PERC range (typical PERC: -0.35 to -0.37%/°C). At a cell temperature of 70°C, power loss is ~16.6% instead of ~17.5–18.5% for lower-performing PERC modules, resulting in measurably higher summer energy yield. - **Certified PID resistance** - The series carries a positive PID test result (IEC 62804), ensuring long-term power stability in high-humidity environments and at system voltages up to 1000 V DC. This eliminates the risk of efficiency degradation of several percentage points common in non-certified modules. - **25-year linear power warranty with confirmed retention** - The manufacturer guarantees ≥84.8% of rated power after 25 years, matching the level offered by direct peers in this segment (AE Solar AURORA AE MD-108, Aptos Solar DNA 108-Monofacial). The warranty covers both product (10 years) and power output, backed by IEC 61215 and IEC 61730 certification. ## Cons - **Not BNEF Tier-1 bankable** - JS Solar does not appear on the BNEF Tier-1 list (Q1 2026), unlike suppliers behind some peer-comparable products. For installations financed via bank loans or leasing, this can be a formal barrier — lenders typically require modules from manufacturers with confirmed bankability status. - **PERC technology in the TOPCon transition era** - The series is built on mono PERC, while the market in 2025–2026 is shifting rapidly to N-type TOPCon (temperature coefficient: -0.29 to -0.30%/°C vs. -0.34%/°C for this series, plus lower LID losses). Choosing this series means selecting proven but technically regressing technology, which may reduce the residual value of the installation after 10+ years. - **Monofacial-only design** - The JS182MHC108 series is available only in monofacial configuration (is\_bifacial: false), while the direct peer LEDVANCE M395~415P54LM-BF-F3 (415 Wp, 21.25%) offers bifacial technology. On rooftops with a light-colored or membrane substrate, bifacial modules can deliver an additional 5–15% yield from reflected irradiance — an advantage this series structurally cannot provide. ## About this series The JS Solar JS182MHC108 series redefines efficiency standards in the residential photovoltaic installation segment, focusing on maximum power density while maintaining optimal dimensions. A key distinguishing feature of these modules is the use of **half-cut cells (Half-Cut)**, which drastically reduces losses resulting from internal resistance and partial shading of the roof surface. The use of modern 182 mm wafers in a 108-cell configuration allows for high energy yields even on roofs with complex geometry and limited surface area. Innovative **multi-busbar** technology shortens the electron flow path, leading to lower thermal loads and a longer component lifespan. This solution is primarily dedicated to individual investors seeking a balance between aesthetics and reliability in harsh weather conditions. What sets the JS182MHC108 series apart from the competition is its **high module efficiency** and excellent temperature coefficient, ensuring stable operation on hot days. By choosing this product, the user receives a technologically advanced system **resistant to the PID effect**, which guarantees the maintenance of nominal power for decades of operation without the need for frequent inspections and unplanned service costs. This is an optimal choice for modern single-family housing, where every square meter of roof space counts. ## Notable figures - At 20.7% efficiency, this panel is 1.1pp below the \*\*database\*\* median of 21.8% - 207.2 W/m² power density is 10.9 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - Temperature coefficient of -0.34%/°C is 0.04pp worse than \*\*database\*\* median (-0.30%/°C) - higher losses in summer heat - 21.5 kg weight - 5.0 kg lighter than \*\*database\*\* median (26.5 kg), reducing installation effort - Ranked #10764 out of 14005 panels for efficiency in the database ## Questions ### What is the power output of the JS Solar JS182MHC108 panels, and is it enough to power a typical single-family home? Each module in the JS182MHC108 series delivers a maximum output of 415 Wp. A typical single-family home consuming 4,000–5,000 kWh per year usually requires 8–12 modules, resulting in a 3.3–5 kWp system. The high module efficiency combined with half-cut cell technology means that even a smaller roof area can support an installation that covers a substantial share of household electricity demand. ### What is the half-cut cell technology used in the JS182MHC108 series, and does it actually improve energy yield? Half-cut technology splits each solar cell in two, reducing internal resistance and minimizing resistive heat losses. In practice, the JS182MHC108 handles partial shading — from a chimney or dormer, for example — more effectively, because a shaded half-cell does not shut down the entire module string. The result is higher annual energy yield and lower sensitivity to the unfavorable roof conditions common in residential installations. ### What warranty does the JS Solar JS182MHC108 carry, and what exactly does it cover? The manufacturer provides a 25-year linear power warranty, guaranteeing that each panel retains a defined percentage of its rated output over the entire period. A standard product warranty covering material and manufacturing defects also applies. Before purchasing, verify current warranty terms with your local distributor — JS Solar is not Bloomberg NEF Tier 1 certified, which may be relevant when assessing long-term financial and service risk. ### Are the JS182MHC108 panels protected against PID, and how does that affect long-term system performance? Yes, the JS182MHC108 series is designed to resist PID (Potential Induced Degradation), a gradual power loss caused by stray current leaking through the mounting structure into the cells. PID resistance is especially important in high-humidity climates and high-voltage string configurations. This built-in protection ensures the modules maintain their rated output for decades without requiring additional service interventions or unplanned maintenance costs. ### Will the JS182MHC108 series perform well on a pitched roof with a chimney or dormers where available space is limited? Yes, the 108-cell, 182 mm wafer configuration delivers high power in a relatively compact module footprint, making the JS182MHC108 a strong fit for roofs with limited usable area. The half-cut cell technology further reduces the impact of partial shading from chimneys, dormers, or satellite dishes — keeping energy losses low even when portions of the array are intermittently shaded throughout the day. ### Is JS Solar a Tier 1 manufacturer, and is investing in their panels worthwhile? JS Solar is not listed as a Tier 1 manufacturer by Bloomberg NEF, meaning it carries lower recognition in global financial risk assessments. This does not necessarily indicate inferior product quality — the JS182MHC108 series features proven half-cut cells, a multi-busbar architecture, PID protection, and a 25-year power warranty. We recommend comparing the offer against Tier 1 alternatives and confirming local warranty service availability with a distributor before making a purchase decision. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/7011930f5a40367dc4f72560bd4ba6cd-9018e7619a81.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-455-MAH54Db](https://comparepv.com/panel/aiko-aiko-455-mah54db) | 455 W | +50 W, cooler, +2.6 pp | | [Longi Solar LR5-54HTH-455M](https://comparepv.com/panel/longi-lr5-54hth-455m) | 455 W | +50 W, cooler, +2.6 pp | | [Yingli YL455CF54 e/2](https://comparepv.com/panel/yingli-yl455cf54-e-2) | 455 W | +50 W, cooler, +2.6 pp | | [Einnova Solarline ESM-455T](https://comparepv.com/panel/einnova-solarline-esm-455t) | 455 W | +50 W, +2.6 pp, +5 yr warranty | | [SunEvo Solar SE5-54HBC-455W](https://comparepv.com/panel/sunevo-solar-se5-54hbc-455w) | 455 W | +50 W, cooler, +2.6 pp | | [Just Solar JST-EDMH-(445-465)W-TD (455W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-455w-class) | 455 W | +50 W, +2.6 pp, +5 yr warranty | | [Luxor Solar LX-455M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-455m-182r-96-gg) | 455 W | +50 W, cooler, +2.6 pp | | [JS Solar JS182MHC108-390](https://comparepv.com/panel/js-solar-js182mhc108-390) | 390 W | -15 W, -0.7 pp | | [JS Solar JS182MHC108-395](https://comparepv.com/panel/js-solar-js182mhc108-395) | 395 W | -10 W, -0.5 pp | | [JS Solar JS182MHC108-400](https://comparepv.com/panel/js-solar-js182mhc108-400) | 400 W | Very close match | | [JS Solar JS405M108](https://comparepv.com/panel/js-solar-js405m108) | 405 W | Cooler, lighter, +1.0 pp | | [JS Solar JS410M108HBC](https://comparepv.com/panel/js-solar-js410m108hbc) | 410 W | Cooler, +0.3 pp | | [JS Solar JS182MHC108-410](https://comparepv.com/panel/js-solar-js182mhc108-410) | 410 W | +0.3 pp | | [JS Solar JS415M108HBC](https://comparepv.com/panel/js-solar-js415m108hbc) | 415 W | +10 W, cooler, +0.6 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +105 W, cooler, +4.3 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +90 W, cooler, +4.1 pp | --- Source: https://comparepv.com/panel/js-solar-js182mhc108-405 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.