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BYD MSBK-33 655W Mono Bifacial Monocrystalline Solar Panel
Model MSBK-33 655 | Mono Bifacial Dual Glass | 132 Monocrystalline Cells | Bifacial | 1500V System Voltage
Product Overview
The BYD MSBK-33 655W mono bifacial monocrystalline solar panel delivers high power density for large scale projects. This advanced dual glass module uses 210 mm monocrystalline cells to achieve up to 21.73% module efficiency across the range. The 655 W variant offers 21.1% efficiency, making it ideal where available roof or ground space is limited. Bifacial design enables energy generation from both the front and rear surfaces for higher yield. In real sites, this feature can provide an additional 5% to 25% power gain, depending on installation conditions. The robust dual glass construction and high strength aluminium frame support mechanical loads up to 5400 Pa on the front. Negative load resistance of 2400 Pa helps ensure reliability in high wind conditions. With a maximum system voltage of 1500 V, the module integrates easily into modern high voltage arrays. It maintains excellent performance at higher temperatures thanks to a low power temperature coefficient of -0.328% per degree Celsius. The panel is well suited to commercial rooftops, ground mount systems, and utility scale solar farms. Superior low light response supports strong output during cloudy weather, haze, and early morning or late afternoon hours. The result is stable long term energy production that can reduce levelized cost of energy across the project life. A 12 year product warranty and 30 year linear power warranty provide strong performance assurance for investors. This panel combines high efficiency, durable materials, and bifacial technology to maximise lifetime energy yield.
Key Benefits
High power density for limited space: The 655 W output and up to 21.73% efficiency help maximise generation per square metre.
Bifacial energy gain: Dual sided power generation can increase total yield by 5% to 25% when optimally installed.
Proven long term reliability: Dual glass design, 210 mm mono cells, and a strong aluminium frame support a 30 year power warranty.
Lower LCOE and BOS costs: High efficiency and bifacial gains reduce balance of system costs and help achieve a lower levelized energy cost.
Wide environmental suitability: The module operates from -40°C to +85°C and is tested for harsh environments such as ammonia rich sites.
Excellent system compatibility: The high power module is compatible with mainstream string inverters and single axis trackers used worldwide.
How It Works
The BYD MSBK-33 655W mono bifacial solar panel converts sunlight into clean DC electricity using high efficiency monocrystalline cells. Each cell uses a large 210 mm wafer that captures more light on the active area. The cells are interconnected into a dual glass module that protects them from moisture and mechanical stress. Front side glass receives direct sunlight while the rear side captures reflected and diffuse light from the ground or nearby surfaces. This two sided collection increases total energy output compared to conventional monofacial panels. Generated DC power is delivered through the junction box and cables to an inverter. The inverter converts the DC power into AC suitable for homes, businesses, or grid export. Low temperature coefficients keep power loss under control during hot conditions. Stable performance under low irradiation helps maintain production on hazy or cloudy days. Across its lifetime, the panel is designed to degrade slowly, preserving a high percentage of initial output after 30 years.
Bifacial dual glass architecture: The module uses glass on both sides to protect the cell string and enable bifacial operation. Light striking the rear side is converted into additional electricity, increasing overall yield without extra footprint.
High efficiency monocrystalline cell technology: Large 210 mm mono cells are optimised for high conversion efficiency and stable long term performance. Their design supports strong energy harvest in both high irradiance and low light conditions across the day.
Optimised performance across temperatures: With a Pmax temperature coefficient of -0.328% per degree Celsius, output loss in heat is moderated. This characteristic helps maintain higher real world generation in hot climates compared with less optimised modules.
System integration and safety: The 1500 V DC maximum system voltage supports long strings and reduced cabling costs in larger arrays. An IP rated junction box with three bypass diodes helps manage shading and protects the module during operation.
Technical Specifications
| Manufacturer | BYD Company Limited, China |
| Model | MSBK-33 655 |
| Technology | Mono bifacial dual glass, monocrystalline cells |
| Power Range | 645 Wp to 675 Wp series, 655 Wp nominal model |
| Maximum Power (Pmax, STC) | 655 Wp at STC |
| Open Circuit Voltage (Voc, STC) | 45.58 V |
| Short Circuit Current (Isc, STC) | 18.21 A |
| Voltage at Maximum Power (Vmpp, STC) | 37.95 V |
| Current at Maximum Power (Impp, STC) | 17.27 A |
| Module Efficiency (STC) | 21.1% for 655 W model, series up to 21.73% |
| Nominal Maximum Power (Pmax, NMOT) | 490.2 Wp at NMOT |
| Open Circuit Voltage (Voc, NMOT) | 42.7 V |
| Short Circuit Current (Isc, NMOT) | 14.69 A |
| Voltage at Maximum Power (Vmpp, NMOT) | 35.2 V |
| Current at Maximum Power (Impp, NMOT) | 13.91 A |
| Power Tolerance | 0 to +0.5% (0 to +5 W across series) |
| Bifacial Factor | 70% ± 5% |
| Operating Temperature Range | -40°C to +85°C |
| Nominal Module Operating Temperature (NMOT) | 45°C ± 2°C |
| Temperature Coefficient of Pmax | -0.328% / °C |
| Temperature Coefficient of Voc | -0.254% / °C |
| Temperature Coefficient of Isc | +0.041% / °C |
| Maximum System Voltage | 1500 V DC |
| Series Fuse Rating | 35 A maximum fuse current rating |
| Fire Safety Class | Class C |
| Panel Dimensions (H × W × D) | 2384 × 1303 × 35 mm |
| Weight | 38.7 kg |
| Cell Count and Size | 132 monocrystalline cells, 210 mm wafer format |
| Glass Type and Thickness | Anti reflection coated glass, 2 mm thickness |
| Frame Material | High strength anodized aluminium alloy frame |
| Junction Box | IP rated junction box with 3 bypass diodes |
Certifications & Compliance
Certifications: IEC 61215-1, IEC 61215-1-1, IEC 61215-2, IEC 61730-1, IEC 61730-2, UL 61730-1, UL 61730-2, fire safety Class C.
Inverter Compatibility: Designed for excellent compatibility with mainstream 1500 V string inverters and tracker systems in utility, commercial, and industrial projects.
Environmental: Suitable for harsh environments including ammonia exposure sites, with dual glass construction providing enhanced moisture and UV resistance.
Warranty: 12 year product warranty and 30 year linear power warranty, with power output guaranteed at 83.5% of initial rating at year 30 and an annual degradation rate as low as 0.55% after the first year.
Documentation
Product Datasheet (PDF)● Available | Contact us for lead time and pricing
| SKU | PES-SPS-SOL-1931 |
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| Manufacturer | PES Supply |
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