--- title: "WINAICO WST-400MGX-P1 Full Black Solar Panel: Specs & Datasheet | ComparePV" description: "WINAICO WST-400MGX-P1 Full Black solar panel. Specs: 20.42% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/winaico-wst-400mgx-p1-full-black" image: "https://comparepv.com/og/panel/winaico-wst-400mgx-p1-full-black.png" updated: 2026-11-05 --- # WINAICO WST-400MGX-P1 Full Black Middle of its segment, short guarantee 6,662 panels in the 300-500 W band, all technologies ## Identity - **Manufacturer:** WINAICO - **Model:** WST-400MGX-P1 Full Black - **Series:** WST-MGX-P1 GEMINI - **Rated power:** 400 W - **Cell technology:** Monocrystalline ## How it compares Compared against 300-500 W band, all technologies (6662 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 400 W | 435 W | Weak - bottom 25% | | | Module efficiency | 20.42% | 21.30% | Typical | 11,769 | | Power density | 204.2 | 212.6 | Typical | 11,779 | | Temperature coefficient | -0.350 | -0.300 | Weak - bottom 24% | 10,593 | | Weight (kg) | 21.5 kg | 22.5 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 19% | 10,001 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.42% | 21.30% | Typical | 11,769 | | Power density | 204.2 | 212.6 | Typical | 11,779 | | Temperature coefficient | -0.350 | -0.300 | Weak - bottom 24% | 10,593 | | Weight per kWp | 53.8 | 53.3 | Typical | 7,907 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 19% | 10,001 | ### Watch out for - **25 year performance warranty** - Bottom 19% of the 300-500 W band, against a median of 30 yrs. - **-0.350 %/°C temperature coefficient** - Bottom 24% of the 300-500 W band, against a median of -0.300. - **Not ideal for:** Owners who want a long output guarantee and hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 400 W - **Efficiency:** 20.42 % - **Voltage at Pmax (Vmp):** 31.06 V - **Current at Pmax (Imp):** 12.88 A - **Open-circuit voltage (Voc):** 37.29 V - **Short-circuit current (Isc):** 13.69 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:** 0.040 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell count:** 108 ### Physical - **Length:** 1726 mm - **Width:** 1135 mm - **Thickness:** 35 mm - **Weight:** 21.5 kg - **Area:** 1.96 m2 - **Power density:** 204.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 85.3 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.53 % - **Output after 30 years:** 331 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11769 of 14269 | | Power density | 11779 of 14269 | | Temperature coefficient | 10593 of 14269 | | Weight | 7907 of 14269 | | Warranty | 10001 of 14269 | ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/WINAICO_Datasheet_WST-410MGX-P1_EU_0422-2b3a5ea91bb1.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Luxor Solar LX-440M/182-108+GG](https://comparepv.com/panel/luxor-solar-lx-440m-182-108-gg) | 440 W | Cooler, +2.6 pp, +5 yr warranty | | [Just Solar JST-EDMH-(445-465)W-TD (450W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-450w-class) | 450 W | +50 W, +2.6 pp, +5 yr warranty | | [Q-SUN Solar QNN182-HG450-54](https://comparepv.com/panel/qn-solar-pv-limited-qnn182-hg450-54) | 450 W | +50 W, cooler, +2.6 pp | | [Huayao HY440-N108BDD](https://comparepv.com/panel/huayao-hy440-n108bdd) | 450 W | +50 W, +2.6 pp, +5 yr warranty | | [BYD NLBK-27-450](https://comparepv.com/panel/byd-nlbk-27-450) | 450 W | +50 W, +2.6 pp, +5 yr warranty | | [Renesola RS41-450NBG-E3](https://comparepv.com/panel/renesola-rs41-450nbg-e3) | 450 W | +50 W, cooler, +2.6 pp | | [WINAICO WST-400MGX-P3 Full Black](https://comparepv.com/panel/winaico-wst-400mgx-p3-full-black) | 400 W | Very close match | | [WINAICO WST-405MGX-E5](https://comparepv.com/panel/winaico-wst-405mgx-e5) | 405 W | Cooler, +0.4 pp | | [WINAICO WST-410MGX-P3](https://comparepv.com/panel/winaico-wst-410mgx-p3) | 410 W | +10 W, +0.5 pp | | [WINAICO WST-410MGX-E3](https://comparepv.com/panel/winaico-wst-410mgx-e3) | 410 W | +10 W, +0.6 pp | | [Jinko Solar JKM510T-48HL6M-DB](https://comparepv.com/panel/jinko-solar-jkm510t-48hl6m-db) | 510 W | +110 W, cooler, +5.1 pp | | [Jinko Solar JKM505T-48HL6M-DB](https://comparepv.com/panel/jinko-solar-jkm505t-48hl6m-db) | 505 W | +105 W, cooler, +4.8 pp | | [Jinko Solar JKM500T-48HL6M-DB](https://comparepv.com/panel/jinko-solar-jkm500t-48hl6m-db) | 500 W | +100 W, cooler, +4.6 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +110 W, cooler, +4.6 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +95 W, cooler, +4.4 pp | | [Jinko Solar JKM495T-48HL6M-DB](https://comparepv.com/panel/jinko-solar-jkm495t-48hl6m-db) | 495 W | +95 W, cooler, +4.3 pp | --- Source: https://comparepv.com/panel/winaico-wst-400mgx-p1-full-black Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.