--- title: "Solarwatt Solarwatt Panel vision AM 4.0 pure 405 Wp 405W Solar Panel - Specs & Review | ComparePV" description: "Solarwatt Solarwatt Panel vision AM 4.0 pure 405 Wp 405W solar panel. Specs: 20.70% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/solarwatt-solarwatt-panel-vision-am-4-0-pure-405-wp" updated: 2026-09-11 --- # Solarwatt Solarwatt Panel vision AM 4.0 pure 405 Wp Strong in heat, heavy for its output 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** Solarwatt - **Model:** Solarwatt Panel vision AM 4.0 pure 405 Wp - **Series:** Solarwatt Panel vision AM 4.0 pure - **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 | 20.70% | 20.60% | Typical | 10,764 | | Power density | 207.4 | 206.2 | Typical | 10,626 | | Temperature coefficient | -0.330 | -0.350 | Strong - top 10% | 8,545 | | Weight (kg) | 25.4 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 | 20.70% | 20.60% | Typical | 10,764 | | Power density | 207.4 | 206.2 | Typical | 10,626 | | Temperature coefficient | -0.330 | -0.350 | Strong - top 10% | 8,545 | | Weight per kWp | 62.7 | 53.0 | Weak - bottom 5% | 12,814 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 17% | 21 | ### Strengths - **-0.330 %/°C temperature coefficient** - Top 10% of the PERC 400-450 W segment, against a median of -0.350. - **30 year performance warranty** - Top 17% of the PERC 400-450 W segment, against a median of 25 yrs. ### Watch out for - **62.7 kg per kWp** - Bottom 5% of the PERC 400-450 W segment, against a median of 53.0. Ranked 12,814th in the whole database. - **Best for:** Residential and commercial. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 405 W - **Efficiency:** 20.70 % - **Voltage at Pmax (Vmp):** 30.90 V - **Current at Pmax (Imp):** 13.10 A - **Open-circuit voltage (Voc):** 37.20 V - **Short-circuit current (Isc):** 14.00 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.330 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 108 - **Bifacial:** yes - **Bifacial gain:** 20.00 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 25.4 kg - **Area:** 1.95 m2 - **Power density:** 207.4 Wp/m2 ### Warranty and degradation - **Product warranty:** 30 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.0 % - **Output after 30 years:** 352 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10764 of 14005 | | Power density | 10626 of 14005 | | Temperature coefficient | 8545 of 14005 | | Weight | 12814 of 14005 | | Warranty | 21 of 14005 | ## About this series The Solarwatt Panel vision AM 4.0 pure series consists of advanced **glass-glass** modules that redefine durability standards in residential and commercial photovoltaic installations. Thanks to the use of a double layer of tempered glass, the cells are almost completely isolated from negative external factors, which effectively eliminates the problem of micro-cracks and degradation caused by moisture or temperature fluctuations. The use of efficient **bifacial** technology enables additional energy yields from light reflected from the ground, making these panels an ideal choice for ground-mounted structures and roofs with light-colored coverings. This construction provides exceptional resistance to extreme snow loads and gusty winds, guaranteeing the stability of the system for decades of use. By choosing this series, the investor receives a product with **maximum longevity** that maintains high efficiency much longer than traditional modules with a backsheet film. This solution is dedicated to users seeking uncompromising fire safety, as the fire-resistant glass layers form a natural protective barrier. Solarwatt Panel vision AM 4.0 pure stands out from the competition with **European precision standards** and full resistance to ammonia and sea salt, allowing for trouble-free installation in demanding agricultural and coastal environments. It is an optimal investment for those prioritizing long-term profits and maximum capital protection. ## 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 -0.33%/°C matches the \*\*PERC 400-450W\*\* median - At 25.4 kg (3.4 kg above \*\*PERC 400-450W\*\* median of 22.0 kg), requires checking roof load capacity - #10764 for efficiency, #8545 for temperature performance out of 14005 panels ## Questions ### Is the Solarwatt Panel vision AM 4.0 pure series still available for purchase? The Solarwatt Panel vision AM 4.0 pure series has been discontinued and is no longer actively manufactured. If you require similar glass-glass bifacial PERC performance backed by a 30-year warranty, consider the newer Solarwatt Panel vision AM 4.5 series, which carries on the same proven technology at higher wattages. ### What warranty does the Solarwatt Panel vision AM 4.0 pure come with? Solarwatt backs the vision AM 4.0 pure with a 30-year product warranty and a 30-year linear power warranty. This guarantees that the 405 Wp module will continue producing energy above the manufacturer-specified minimum output for three full decades — one of the longest warranty terms available in the residential and commercial PV market. ### What is bifacial technology and when does it pay off with the vision AM 4.0 pure? A bifacial module harvests energy from both sides: direct irradiance on the front and reflected light on the rear surface. In ground-mount systems or rooftops with light-colored surfaces, the bifacial gain typically ranges from 5 to 25% compared to a monofacial panel. The vision AM 4.0 pure combines bifacial PERC cells with a glass-glass construction that maximizes rear-side transmissivity, boosting overall energy yield. ### Why is the glass-glass vision AM 4.0 pure more durable than a standard backsheet module? In backsheet panels, moisture can penetrate through the polymer rear layer over time, causing delamination and micro-cracks in PERC cells. The glass-glass design of the vision AM 4.0 pure encapsulates the cells between two tempered glass layers, sealing them against moisture ingress, UV exposure, and thermal cycling. The result is a lower annual degradation rate and sustained efficiency across the full 30-year warranty period. ### Can the Solarwatt Panel vision AM 4.0 pure handle heavy snow loads in Central European climates? Yes. The module is certified to a snow load of 5,400 Pa with a test load of 8,100 Pa, exceeding requirements for most European locations including high-snowfall mountain areas. The rigid glass-glass frame provides additional structural stiffness compared to backsheet modules subjected to the same mechanical stress, making it a reliable choice for demanding winter conditions. ### Are the vision AM 4.0 pure modules suitable for coastal sites or agricultural installations? Yes. The vision AM 4.0 pure holds IEC 61701 (salt mist corrosion) and IEC 62716 (ammonia resistance) certifications, making it a solid choice for coastal environments and livestock farms where airborne ammonia could degrade modules lacking those ratings. German manufacturing standards further support long-term reliability in chemically demanding conditions. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/202455097567c5ba0931520-5c68bca62459.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, +2.6 pp, -5 yr warranty | | [Yingli YL455CF54 e/2](https://comparepv.com/panel/yingli-yl455cf54-e-2) | 455 W | +50 W, lighter, +2.6 pp | | [Einnova Solarline ESM-455T](https://comparepv.com/panel/einnova-solarline-esm-455t) | 455 W | +50 W, lighter, +2.6 pp | | [SunEvo Solar SE5-54HBC-455W](https://comparepv.com/panel/sunevo-solar-se5-54hbc-455w) | 455 W | +50 W, +2.6 pp, -5 yr warranty | | [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, lighter, +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 | | [Solarwatt SOLARWATT Panel vision AM 4.0 black (400 Wp variant)](https://comparepv.com/panel/solarwatt-solarwatt-panel-vision-am-4-0-black-400-wp-variant) | 400 W | Very close match | | [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/solarwatt-solarwatt-panel-vision-am-4-0-pure-405-wp 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.