--- title: "BYD MSBK-33 650 650W Solar Panel - Specs & Review | ComparePV" description: "BYD MSBK-33 650 650W solar panel. Specs: 20.92% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/byd-msbk-33-650" updated: 2026-09-11 --- # BYD MSBK-33 650 Strong in heat, heavy for its output 320 panels in the segment PERC 650-700 W ## Identity - **Manufacturer:** BYD - **Model:** MSBK-33 650 - **Series:** AURO P MSBK-33 - **Rated power:** 650 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 650-700 W (320 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 650 W | 660 W | Weak - bottom 7% | | | Module efficiency | 20.92% | 21.25% | Weak - bottom 9% | 10,014 | | Power density | 209.2 | 212.5 | Weak - bottom 7% | 10,011 | | Temperature coefficient | -0.328 | -0.340 | Strong - top 2% | 8,526 | | Weight (kg) | 38.7 kg | 34.5 kg | Weak - bottom 2% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.92% | 21.25% | Weak - bottom 9% | 10,014 | | Power density | 209.2 | 212.5 | Weak - bottom 7% | 10,011 | | Temperature coefficient | -0.328 | -0.340 | Strong - top 2% | 8,526 | | Weight per kWp | 59.5 | 52.3 | Weak - bottom 2% | 12,196 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.328 %/°C temperature coefficient** - Top 2% of the PERC 650-700 W segment, against a median of -0.340. Ranked 8,526th in the whole database. ### Watch out for - **59.5 kg per kWp** - Bottom 2% of the PERC 650-700 W segment, against a median of 52.3. Ranked 12,196th in the whole database. - **209.2 watts per square metre** - Bottom 7% of the PERC 650-700 W segment, against a median of 212.5. Ranked 10,011th in the whole database. - **20.92% module efficiency** - Bottom 9% of the PERC 650-700 W segment, against a median of 21.25%. Ranked 10,014th in the whole database. - **Best for:** Residential, utility-scale, shaded-installations and cold-climate. - **Not ideal for:** Weight-limited structures, roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 650 W - **Efficiency:** 20.92 % - **Voltage at Pmax (Vmp):** 37.86 V - **Current at Pmax (Imp):** 17.18 A - **Open-circuit voltage (Voc):** 45.45 V - **Short-circuit current (Isc):** 18.17 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.328 %/degC - **Temperature coefficient of Voc:** -0.254 %/degC - **Temperature coefficient of Isc:** 0.041 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 132 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 35 mm - **Weight:** 38.7 kg - **Area:** 3.11 m2 - **Power density:** 209.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 83.5 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.50 % - **Output after 30 years:** 543 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10014 of 14005 | | Power density | 10011 of 14005 | | Temperature coefficient | 8526 of 14005 | | Weight | 12196 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Shingled technology eliminates busbar losses** - The shingled cell interconnection method removes conventional busbars, increasing the module's active absorption area and reducing internal resistance. In practice, this translates to better performance under partial shading conditions (chimneys, dormers) compared to standard half-cut PERC modules of the same rated power. - **Bifacial design with degradation ≤0.5%/year over 30 years** - A bifaciality factor of 70±5% enables additional energy yield from reflected irradiance off the mounting surface. BYD guarantees performance retention over 30 years with a maximum annual degradation of 0.5% after year one — on par with peer comparables (Trina TSM-DE21, Neo Solar NESE 66MHT). - **Full Black + premium rooftop aesthetics** - The MSBK (Mono Shingled Black) construction features a uniform black frame, cells, and backsheet, eliminating visible metallic elements. Combined with the busbar-free shingled design, the result is a visually seamless panel — a significant market advantage in the prosumer segment for modern architectural projects. - **BYD Tier 1 BNEF – warranty bankability** - BYD is listed as a Tier 1 manufacturer by Bloomberg NEF (H1 2025), a key criterion for project financing and risk assessment of 30-year performance warranty fulfillment. The company has operated continuously since 1995 and is diversified across multiple sectors (automotive, storage, PV), reducing counterparty and insolvency risk. - **Positive power tolerance only (0/+5 W)** - All seven variants in the series (645–675 Wp) are manufactured with a tolerance of 0 to +5 W, guaranteeing that each module meets or exceeds its rated power. This eliminates binning losses in string installations and simplifies system design without the need for correction factors in simulation tools. ## Cons - **PERC (P-type) rather than N-type TOPCon** - P-type PERC cells exhibit higher first-year LID degradation (up to 2% vs. ~1% for TOPCon) and annual degradation of ~0.6–0.8% compared to ~0.4–0.5% for N-type. The peer comparable Trina Solar TSM-DE21 (N-type TOPCon, 675 Wp, η 21.7%) offers a higher bifaciality factor (~85% vs. 70%) at a similar market price, making it technically more favorable for long-term installations. - **12-year product warranty – below segment leaders** - The module carries a 12-year product warranty, whereas leading premium series (Jinko Tiger Neo, LONGi Hi-MO 6, Trina Vertex N) offer a standard 15-year product warranty. In the context of a 30-year performance guarantee, this disparity may be material when assessing service risk in externally financed projects. ## About this series BYD AURO P MSBK-33 panels introduce a new quality thanks to the use of advanced **shingled technology**, which eliminates traditional busbar connections between cells. Thanks to this solution, the absorption surface is utilized to the maximum extent, which translates into higher power density while maintaining compact module dimensions. The **Full Black** design makes these panels an ideal choice for investors who value impeccable roof aesthetics, as the uniform, black surface blends perfectly with modern architecture. The use of an innovative cell connection method significantly reduces the risk of micro-cracks and minimizes energy losses resulting from internal resistance. This series stands out with **increased resistance to shading**, which is crucial for challenging roofs with chimneys or dormers. Unlike standard solutions, shingled technology allows for more efficient operation of individual module sections even with partial shading. This solution is dedicated primarily to demanding prosumer systems, where every watt of energy obtained and **long-term mechanical reliability** count. By choosing these modules, the user gains a product resistant to difficult weather conditions, which sets standards in the premium segment by combining efficiency with elegant design. ## Notable figures - Efficiency of 20.9% matches the \*\*PERC 650-700W\*\* median - Power density of 209.2 W/m² is 3.2 W/m² below \*\*PERC 650-700W\*\* median (212.5 W/m²) - needs more roof space - At -0.33%/°C, hot weather performance is typical for \*\*PERC 650-700W\*\* panels - At 38.7 kg (4.2 kg above \*\*PERC 650-700W\*\* median of 34.5 kg), requires checking roof load capacity - Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface ## Questions ### How does the shingled cell technology in the BYD AURO P MSBK-33 work, and is it really worth the premium? In shingled technology, cells are bonded in an overlapping configuration — similar to roof tiles — eliminating traditional busbars entirely. This gives the BYD AURO P MSBK-33 a larger active absorption area, fewer points susceptible to microcracks, and lower resistive losses. The practical result is a module efficiency of up to 21.73% and improved performance under partial shading conditions, making this technology a sound investment for challenging roof configurations. ### What warranty coverage does the BYD AURO P MSBK-33 series carry? The AURO P MSBK-33 series comes with a 12-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty with an annual degradation rate not exceeding 0.50%. This means that after 30 years of operation, the panel is guaranteed to retain at least 87.4% of its nominal power output. Both warranties are backed by BYD Solar, a Bloomberg Tier 1 certified manufacturer. ### Are the BYD AURO P MSBK-33 Full Black panels suitable for a roof with chimneys and shading? Yes. The shingled technology used in the MSBK-33 series divides the module into independently operating sections, meaning that partial shading from a chimney, dormer, or antenna limits power losses only to the shaded portion rather than the entire string. This is a significant advantage over conventional busbar-based panels and one of the primary reasons to choose this series for complex roof layouts with shading challenges. ### What is the difference between the BYD AURO P MSBK-33 (Full Black) and the MSTK-33 variant? Both variants share the same power range of 645–675 W and the same shingled PERC technology. However, the MSBK-33 is the Full Black edition featuring a black frame and black backsheet, designed for customers who prioritize a uniform, low-profile aesthetic on the roof. The MSTK-33 uses a standard silver frame, which is typically slightly less expensive but more visually prominent. Electrical parameters and warranty terms are identical for both variants. ### Does the bifacial design of the BYD AURO P MSBK-33 provide any real benefit on a typical pitched roof? The MSBK-33 panels are bifacial; however, real-world gains from the rear side of the module range from 5% to 25% and depend on the albedo of the underlying surface (e.g., a light-colored membrane or white gravel) as well as the roof pitch angle. On a typical dark pitched roof, the rear-side gain will be closer to the lower end of that range — approximately 5–8%. That said, bifaciality delivers its greatest value in pergola, carport, or flat-roof installations with a high-albedo surface beneath the array. ### How do the BYD AURO P MSBK-33 panels perform during winter and in the low-temperature conditions typical of Poland? The MSBK-33 series is certified for operation across a temperature range of −40 °C to +85 °C, so Polish winters pose no challenge whatsoever. In fact, silicon PERC cells exhibit higher efficiency at low temperatures than in summer, since elevated heat reduces output power. As a result, a 675 W panel on a clear winter day can comfortably exceed its nominal rated power output. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/byd-msbk-33-b23559fb294d.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +4.3 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Cooler, lighter, +4.3 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | Cooler, lighter, +4.1 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +4.1 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +50 W, cooler, +4.1 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +45 W, cooler, +4.0 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | Cooler, lighter, +3.9 pp | | [BYD MSBK-33 645](https://comparepv.com/panel/byd-msbk-33-645) | 645 W | Very close match | | [BYD MSTK-33 655](https://comparepv.com/panel/byd-mstk-33-655) | 655 W | Lighter, -5 yr warranty | | [BYD MSTK-33 660](https://comparepv.com/panel/byd-mstk-33-660) | 660 W | Lighter, +0.3 pp, -5 yr warranty | | [BYD MSBK-33 665](https://comparepv.com/panel/byd-msbk-33-665) | 665 W | +15 W, +0.5 pp | | [BYD MSBK-33 670](https://comparepv.com/panel/byd-msbk-33-670) | 670 W | +20 W, +0.6 pp | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +155 W, cooler, +4.2 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +150 W, cooler, +4.0 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +145 W, cooler, +3.9 pp | | [AIKO AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 W | +140 W, cooler, +3.7 pp | --- Source: https://comparepv.com/panel/byd-msbk-33-650 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.