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Leapton LP182*182-M-54-MH-405W
Leapton Brand review

LP182*182-M-54-MH-405W

405 Wp TOPCon
ComparePV verdict

Middle of its segment, weak in heat

Rank 11,592 of 14,005
Compare panels Datasheet PDF
Power (Wp)
405
Weak · bottom 2%
Efficiency (%)
20.72
Weak · bottom 3%
Density (Wp/m²)
207.2
Weak · bottom 3%
Temp (%/°C)
-0.360
Weak · bottom 1%
Weight (kg)
21.0
Typical · median 22.0 kg
Warranty (yrs)
25
Weak · bottom 7%

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.

Ranking

1,218 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall 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
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 5 caution
Best for

Residential, commercial and shaded-installations.

Not ideal for

Hot climates, roofs where every square metre has to count and tight roof space.

Watch-outs
-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.

What owners get
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.

Trade-offs
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.

Notes from the database
  • 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

Specifications

Open datasheet PDF
Nominal power (Pmax) 405 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.72 % Weak Segment median 22.00%
Vmpp · Impp 31.12 V · 13.00 A Operating point at max power
Voc · Isc 37.14 V · 13.65 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1724×1134×30 mm · 1.96 m² of roof
Weight 21.0 kg Typical Typical · median 22.0 kg
Cells 108 · TOPCon Monocrystalline
Coefficient Pmax -0.360 %/°C Weak bottom 1% of its segment
Coefficient Voc · Isc -0.280 · 0.050 %/°C
NOCT 41 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 25 years Weak bottom 7% · median 30 yrs
End-of-warranty output 84.8 % Equals 332 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
-0.360 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Leapton LP182*182-M-54-MH-405W 405 W 20.72% -0.360 21.0 kg You are here
AIKO-455-MAH54Db 455 W 23.30% -0.260 24.0 kg +50 W, cooler, +2.6 pp
LR5-54HTH-455M 455 W 23.30% -0.290 20.8 kg +50 W, cooler, +2.6 pp
YL455CF54 e/2 455 W 23.30% -0.290 20.3 kg +50 W, cooler, +2.6 pp
ESM-455T 455 W 23.30% -0.310 21.0 kg +50 W, +2.6 pp, +5 yr warranty
SE5-54HBC-455W 455 W 23.30% -0.290 20.8 kg +50 W, cooler, +2.6 pp
JST-EDMH-(445-465)W-TD (455W class) 455 W 23.30% -0.300 20.5 kg +50 W, cooler, +2.6 pp
LX-455M/182R-96+ GG 455 W 23.30% -0.260 23.5 kg +50 W, cooler, +2.6 pp
LP182*182-M-54-MH-400W 400 W 20.46% -0.360 21.0 kg -0.3 pp
LP182*182-M-54-MH-410W 410 W 20.97% -0.360 21.0 kg +0.2 pp
LP182*182-M-54-MH-415W 415 W 21.27% -0.360 21.0 kg +10 W, +0.6 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +105 W, cooler, +4.3 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +90 W, cooler, +4.1 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +100 W, cooler, +4.0 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +85 W, cooler, +3.8 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +95 W, cooler, +3.8 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +95 W, cooler, +3.8 pp

Found 1783 panels of the same or similar size to this one, within ±10 mm. See them here Found 1917 panels of the same or similar size to this one, within ±25 mm. See them here Found 3392 panels of the same or similar size to this one, within ±50 mm. See them here Found 3970 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
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.
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