--- title: "Axitec AC-405MBT/108V 405W Solar Panel - Specs & Review | ComparePV" description: "Axitec AC-405MBT/108V 405W solar panel. Specs: 20.74% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/axitec-ac-405mbt-108v" updated: 2026-09-11 --- # Axitec AC-405MBT/108V Solid all-round for its segment 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** Axitec - **Model:** AC-405MBT/108V - **Series:** AXIblackbipremium XXL HC - **Rated power:** 405 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) | 405 W | 410 W | Typical | | | Module efficiency | 20.74% | 20.60% | Typical | 10,645 | | Power density | 207.4 | 206.2 | Typical | 10,626 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight (kg) | 21.5 kg | 22.0 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.74% | 20.60% | Typical | 10,645 | | Power density | 207.4 | 206.2 | Typical | 10,626 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight per kWp | 53.1 | 53.0 | Typical | 6,847 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | - **Best for:** Residential and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 405 W - **Efficiency:** 20.74 % - **Voltage at Pmax (Vmp):** 31.21 V - **Current at Pmax (Imp):** 12.98 A - **Open-circuit voltage (Voc):** 37.23 V - **Short-circuit current (Isc):** 13.87 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.280 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 108 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.5 kg - **Area:** 1.95 m2 - **Power density:** 207.4 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 85.0 % - **First-year degradation:** 3.00 % - **Annual degradation:** 0.50 % - **Output after 30 years:** 334 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10645 of 14005 | | Power density | 10626 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 6847 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Bifacial N-type TOPCon Technology** - N-type TOPCon cells exhibit LID degradation below 0.2% in the first year of operation and a lower temperature coefficient (-0.35%/°C) than typical PERC cells (-0.37 to -0.40%/°C). The bifacial cell design captures an additional 5–25% of power from reflected irradiance, offering a particular advantage in ground-mounted systems and rooftop installations with light-colored surfaces. - **Low Degradation with 25-Year Linear Power Warranty** - The manufacturer guarantees annual degradation of ≤0.5%/year and ≥97% of rated power output after 12 months, translating to more than 87.5% of nominal power after 25 years. This is the benchmark for premium TOPCon modules and provides a predictable return on investment across the service life. - **Premium All-Black Aesthetics** - The black aluminum frame paired with a black composite film backsheet creates a uniform, seamless appearance across the roof surface. The series directly targets the residential single-family home segment, where rooftop aesthetics are a key purchasing criterion — in contrast to standard modules with a white backsheet. - **Half-Cut 108-Cell Technology** - Splitting each cell in half reduces resistive losses (current is reduced by approximately 50% per half-cell), improving performance under partial shading conditions. This results in more stable energy output in scenarios typical of Polish rooftop installations where chimneys or antennas cause localized shading. - **Active Production Since 2021, Series Currently Available** - The AXIblackbipremium XXL HC series is actively produced (discontinued: false), and Axitec has operated continuously since 2001. This ensures ongoing availability of replacement components, frames, and warranty support throughout the 25-year product warranty period. ## Cons - **Not Listed as BNEF Tier-1 Bankable Manufacturer** - Axitec does not appear on the BNEF Bankable Manufacturers (Tier-1) list, as confirmed by the product data (tier\_1\_bankable: false) and independent industry sources from 2025. For projects financed through bank debt or leasing, this may present a barrier, as financial institutions generally require bankability status from module manufacturers. - **Efficiency Below Segment Leaders** - The maximum module efficiency of this series is 21.0%, while a directly comparable product — the Luxor Solar Eco Line N-type TOPCon (Glass-Glass, 410 W, same power class) — achieves 21.33%. The ~0.33 percentage point difference translates to approximately 1.6% less energy yield per unit area, a meaningful disadvantage where roof space is constrained. - **OEM Manufacturing Outside Germany** - While Axitec designs its modules in Germany, physical production is carried out by OEM partners in Asia. Unlike manufacturers operating their own facilities, this arrangement limits direct quality control on the production line and makes it more difficult to verify process consistency across production batches. ## About this series The Axitec AXIblackbipremium XXL HC panel series is an advanced solution combining bifacial technology with premium aesthetics. Thanks to the use of N-type cells and TopCon technology, these modules offer significantly higher efficiency in challenging lighting conditions and minimal degradation over time. The use of **bifacial cell activity** allows for energy collection not only directly from the sun, but also from radiation reflected off the ground. This is crucial for investors looking to maximize yields from limited roof space or ground installations. **Half-Cut** technology reduces internal losses and improves panel performance in case of partial shading, which directly translates to power production stability. These modules stand out from the competition with an elegant black finish, making them an ideal choice for modern single-family homes where the appearance of the installation is as important as its parameters. **Reinforced mechanical construction** guarantees resistance to extreme weather events, such as strong wind or snow loads. By choosing this series, the user receives a product with an **above-average lifespan** that solves the problem of long-term power loss, ensuring a secure return on investment in the Polish climate. ## Notable figures - Efficiency of 20.7% matches the \*\*PERC 400-450W\*\* median - At 207.4 W/m² power density, roof space requirements are typical for \*\*PERC 400-450W\*\* panels - Temperature coefficient of -0.35%/°C matches the \*\*PERC 400-450W\*\* median - Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface - Ranked #10645 out of 14005 panels for efficiency in the database ## Questions ### What is the warranty coverage for Axitec AXIblackbipremium XXL HC panels? The AXIblackbipremium XXL HC series comes with a 25-year product warranty and a 25-year linear power output warranty. This means the manufacturer guarantees both the mechanical integrity of the module and a defined minimum power output level for a full quarter century. This is one of the longest warranty standards available in the photovoltaic panel market, and it directly reflects the quality of the N-type (TOPCon) cells used in this series. ### What are the benefits of bifacial technology in the Axitec AXIblackbipremium XXL HC series, and when does it make economic sense? The bifacial cells in this series capture light from both the front and the rear of the module, utilizing reflected irradiance from surfaces such as white gravel, light-colored roofing membranes, or snow. The manufacturer specifies a rear-side gain of up to 25% relative to the nominal rated power. This technology is most cost-effective in ground-mounted installations with a high-albedo surface beneath the array, as well as on flat roofs where adequate clearance exists below the modules. On dark roof tiles, the bifacial gain is minimal. ### How does the Axitec AXIblackbipremium XXL HC differ from a standard monocrystalline PERC panel? The key difference lies in the cell technology: the AXIblackbipremium XXL HC uses N-type TOPCon cells instead of the widely used P-type PERC. TOPCon cells exhibit a lower degradation rate — LID (Light-Induced Degradation) and LeTID (Light and Elevated Temperature Induced Degradation) are virtually absent — perform better at elevated temperatures and in low-light conditions, and achieve higher module efficiency (up to approximately 21%). The additional bifacial capability allows the module to generate measurably more energy in real-world conditions than the nominal 410 Wp datasheet rating would suggest. ### Do the black Axitec AXIblackbipremium XXL HC panels run hotter than white-backed modules? The all-black aesthetic of this series — black frame and black backsheet — can result in slightly higher operating temperatures under full irradiance compared to modules with a white backsheet and silver frame. In practice, the difference amounts to a few degrees Celsius. However, TOPCon cells have a particularly favorable temperature coefficient (approximately -0.30%/°C), meaning this series loses less power to heat than older PERC technology. This partially compensates for the thermal effect of the dark finish. ### Are the Axitec AXIblackbipremium XXL HC panels suitable for pitched roofs on single-family homes? Yes, the series is designed with pitched-roof residential installations in mind, among other use cases. The all-black finish allows the panels to blend seamlessly with dark roof tiles or standing-seam metal roofing. The reinforced frame is rated to withstand snow and wind loads typical of Polish climatic conditions. The Half-Cut cell configuration (108 cells) reduces power losses under partial shading caused by chimneys or roof windows — a common challenge on pitched roof surfaces. ### Is Axitec a reliable manufacturer, and where are the AXIblackbipremium XXL HC panels produced? Axitec is a Germany-based company that has been active in the photovoltaic market since 2009 and maintains its own engineering office in Stuttgart. Physical production takes place in Asia (China/Vietnam), which is standard practice across the industry, including for European premium brands. While Axitec is not currently listed on the BNEF Tier 1 index, the company holds recognized IEC and MCS certifications and is distributed through established European system integrators, confirming reliable after-sales support and warranty accessibility in Poland. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/DB_108zlg_blackbiprem_XXL_HC_CSA-5101b2245bda.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 | | [Axitec AC-390MBT/108V](https://comparepv.com/panel/axitec-ac-390mbt-108v) | 390 W | -15 W, -0.8 pp | | [Axitec AC-395MBT/108V](https://comparepv.com/panel/axitec-ac-395mbt-108v) | 395 W | -10 W, -0.5 pp | | [Axitec AC-400MBT/108V](https://comparepv.com/panel/axitec-ac-400mbt-108v) | 400 W | -0.3 pp | | [Axitec AC-410MBT/108V](https://comparepv.com/panel/axitec-ac-410mbt-108v) | 410 W | +0.3 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 | --- Source: https://comparepv.com/panel/axitec-ac-405mbt-108v 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.