--- title: "Leapton LP182*182-M-54-MH-405W 405W Solar Panel - Specs & Review | ComparePV" description: "Leapton LP182*182-M-54-MH-405W 405W solar panel. Specs: 20.72% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/leapton-lp182-182-m-54-mh-405w" updated: 2026-09-11 --- # Leapton LP182\*182-M-54-MH-405W Middle of its segment, weak in heat 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Leapton - **Model:** LP182\*182-M-54-MH-405W - **Series:** LP182\*182-M-54-MH - **Rated power:** 405 W - **Cell technology:** TOPCon ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 405 W | 435 W | Weak - bottom 2% | | | Module efficiency | 20.72% | 22.00% | Weak - bottom 3% | 10,716 | | Power density | 207.2 | 220.2 | Weak - bottom 3% | 10,749 | | Temperature coefficient | -0.360 | -0.290 | Weak - bottom 1% | 12,345 | | Weight (kg) | 21.0 kg | 22.0 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 7% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.72% | 22.00% | Weak - bottom 3% | 10,716 | | Power density | 207.2 | 220.2 | Weak - bottom 3% | 10,749 | | Temperature coefficient | -0.360 | -0.290 | Weak - bottom 1% | 12,345 | | Weight per kWp | 51.9 | 51.4 | Typical | 5,230 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 7% | 9,798 | ### Watch out for - **-0.360 %/°C temperature coefficient** - Bottom 1% of the TOPCon 400-450 W segment, against a median of -0.290. Ranked 12,345th in the whole database. - **207.2 watts per square metre** - Bottom 3% of the TOPCon 400-450 W segment, against a median of 220.2. Ranked 10,749th in the whole database. - **20.72% module efficiency** - Bottom 3% of the TOPCon 400-450 W segment, against a median of 22.00%. Ranked 10,716th in the whole database. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Hot climates, roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 405 W - **Efficiency:** 20.72 % - **Voltage at Pmax (Vmp):** 31.12 V - **Current at Pmax (Imp):** 13.00 A - **Open-circuit voltage (Voc):** 37.14 V - **Short-circuit current (Isc):** 13.65 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.360 %/degC - **Temperature coefficient of Voc:** -0.280 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 41 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 ### Physical - **Length:** 1724 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.0 kg - **Area:** 1.96 m2 - **Power density:** 207.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **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 | 10716 of 14005 | | Power density | 10749 of 14005 | | Temperature coefficient | 12345 of 14005 | | Weight | 5230 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **N-type TOPCon cells** - The use of TOPCon (N-type) technology instead of legacy PERC reduces LID/LeTID degradation and improves high-temperature performance, translating into higher real-world energy yield during Polish summer conditions. - **Efficiency up to 21.27%** - The top efficiency of 21.27% is on par with tier-1 competitors, including LEDVANCE M395~415P54LM-BF-F3 (21.25%) and Aptos DNA 108-Monofacial (21.25%), trailing only slightly behind AE Solar AURORA MD-108 (21.28%). - **Tier-1 manufacturer, PVEL-verified quality** - Leapton Energy is listed on the BNEF Tier 1 list, and its modules were recognized as a Top Performer in the independent Kiwa PVEL PV Module Reliability Scorecard 2025, reducing supplier selection risk. - **25-year power warranty with low annual degradation** - The manufacturer declares an annual degradation rate of 0.55% and 84.8% retained nominal power after 25 years of operation, a standard benchmark for modern TOPCon modules in this segment. - **Compact design for limited roof space** - The 108 half-cut cell layout (182x182 mm) at approximately 1724x1134 mm dimensions delivers up to 415 Wp from a relatively small area, which matters for the typically small roof surfaces common in Poland. ## Cons - **Production discontinued in 2023** - The LP182\*182-M-54-MH series has been phased out (released 2021, discontinued 2023), meaning limited availability of replacement units and potentially more difficult warranty claims over the remaining term of the 15-year product and 25-year power warranty. - **Monofacial only, no bifacial option** - Unlike the comparable LEDVANCE M395~415P54LM-BF-F3 (BF - bifacial), the Leapton LP182\*182-M-54-MH modules are monofacial only, ruling out the additional rear-side yield gain relevant for flat-roof installations with reflective ground surfaces. ## About this series The Leapton LP182\*182-M-54-MH series was designed to maximize energy yield from a limited roof area, without compromising durability. The use of **monocrystalline cells in a half-cut configuration** helps to minimize power losses and improves the module's performance under partial shading, which is particularly relevant in typical Polish installations (chimneys, trees, skylights). The modules utilize a proven **PERC** cell architecture, allowing them to better utilize available light, even in conditions of lower sunlight. The **tempered, anti-reflective glass** also supports stable operation in varying weather conditions and makes it easier to maintain an aesthetically pleasing appearance. The entire system is completed by a **watertight junction box with a high level of protection**, which is essential in humid and dusty environments. This makes it an excellent choice for residential and small to medium-sized commercial roof installations, where high efficiency, reliability, and long-term operation are key. ## Notable figures - Module efficiency of 20.7% is 1.3pp below average for \*\*TOPCon 400-450W\*\* panels (median: 22.0%) - Power density of 207.2 W/m² is 13.0 W/m² below \*\*TOPCon 400-450W\*\* median (220.2 W/m²) - needs more roof space - Temperature coefficient of -0.36%/°C is 0.07pp worse than \*\*TOPCon 400-450W\*\* median (-0.29%/°C) - higher losses in summer heat - At 21.0 kg, weight matches the \*\*TOPCon 400-450W\*\* median - #10716 for efficiency, #12345 for temperature performance out of 14005 panels ## Questions ### Is the Leapton LP182\*182-M-54-MH series still available for purchase? The Leapton LP182\*182-M-54-MH series has been discontinued and is no longer available as a new product through regular distribution channels. If you need comparable specifications, ask your distributor about a current Leapton replacement — newer series often deliver higher wattage at similar dimensions and remain compatible with the same racking systems. ### What warranty does the Leapton LP182\*182-M-54-MH come with? Leapton provides a 15-year product warranty covering manufacturing defects and a 25-year linear power output warranty. The power warranty guarantees that after 25 years the module will still produce at least the manufacturer-specified percentage of its rated 415 Wp. As a Tier 1 manufacturer headquartered in Japan, Leapton offers a realistic path for enforcing warranty claims. ### What cell technology does the Leapton LP182\*182-M-54-MH use and what does it mean for system owners? The LP182\*182-M-54-MH series uses TOPCon (Tunnel Oxide Passivated Contact) cells in a half-cut configuration. TOPCon achieves higher efficiency than standard PERC cells through improved surface passivation, reducing recombination losses and improving low-light performance — a meaningful advantage in Poland's climate with its frequent overcast days. ### How well do Leapton LP182\*182-M-54-MH panels handle partial shading from chimneys or trees? The half-cut cell design splits each cell into two independent halves, so shade falling on part of the module limits power loss only to the shaded section rather than the entire string. In typical residential installations with chimneys, dormers, or nearby trees, this translates into measurably higher energy yield compared to standard full-cell modules. ### What is the peak power of the Leapton LP182\*182-M-54-MH and how many panels do I need for a 10 kWp system? Each LP182\*182-M-54-MH module is rated at 415 Wp (STC). To build a roughly 10 kWp system you need approximately 25 modules (25 × 415 W = 10,375 W). For a typical residential roof, that is a manageable count when the array layout is planned efficiently. ### Is Leapton a reliable manufacturer and what does Tier 1 status mean for buyers? Leapton Energy is a Bloomberg NEF Tier 1 manufacturer headquartered in Japan. Tier 1 status means banks and project financiers accept the modules as collateral — a strong indicator of product bankability and corporate stability. For buyers, it translates into greater warranty security and lower long-term investment risk. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/726d216e5c83600991beb8b2b3b3176f-9708c12394d7.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, cooler, +2.6 pp | | [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 | | [Leapton LP182\*182-M-54-MH-400W](https://comparepv.com/panel/leapton-lp182-182-m-54-mh-400w) | 400 W | -0.3 pp | | [Leapton LP182\*182-M-54-MH-410W](https://comparepv.com/panel/leapton-lp182-182-m-54-mh-410w) | 410 W | +0.2 pp | | [Leapton LP182\*182-M-54-MH-415W](https://comparepv.com/panel/leapton-lp182-182-m-54-mh-415w) | 415 W | +10 W, +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 | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +100 W, cooler, +4.0 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +85 W, cooler, +3.8 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +95 W, cooler, +3.8 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +95 W, cooler, +3.8 pp | --- Source: https://comparepv.com/panel/leapton-lp182-182-m-54-mh-405w Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.