BYD MSBK-33 670
BYD MSBK-33 670
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SKU  PES-SPS-SOL-1934

BYD MSBK-33 670

BYD MSBK-33 670

OEM Authorized Dealer BABA Compliant Full OEM Warranty 7-10 Business Day Delivery

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Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

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Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

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All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

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We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

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Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

BYD MSBK-33 670 645–675W Mono Bifacial Dual Glass Monocrystalline Solar Panel

Model MSBK-33 | Mono PERC | 132 Half-Cell Monocrystalline | Bifacial | 1500V System Voltage

675 W
Max Power Output
21.73 %
Module Efficiency
132
N-Type TOPCon

Product Overview

The BYD MSBK-33 670 mono bifacial dual glass monocrystalline solar panel delivers very high power density for modern utility and commercial projects. This advanced module offers a power class from 645 Wp up to 675 Wp, with the MSBK-33 670 configuration providing a nominal output of 670 Wp under standard test conditions. A maximum module efficiency of up to 21.73 percent helps roofs and ground mounts generate more energy from limited space. The bifacial glass-glass architecture allows power capture from both front and rear sides, increasing total yield on reflective surfaces. Each panel is built using 210 mm mono wafers and 132 half-cut cells, improving current distribution and lowering resistive losses across the module. Robust dual glass construction and an anodized aluminum frame support high mechanical loads in demanding climates. With industry-leading 12 year product warranty and 30 year linear performance coverage, this panel is engineered to deliver stable long term output and compelling levelized cost of energy for investors and owners.

Key Benefits

High power density for limited space: Output up to 675 Wp and module efficiency up to 21.73 percent enable more energy per square meter, which supports smaller arrays meeting ambitious production targets.

Bifacial design for extra yield: Dual glass bifacial construction harvests light from both sides, delivering additional rear side power gain between five and twenty five percent in well designed systems.

Reliable long term performance: A low annual degradation rate of only zero point five percent and guaranteed eighty three point five percent output at year thirty support predictable lifetime energy generation.

Strong mechanical and environmental resilience: The high strength aluminum alloy frame and dual glass build handle heavy snow and wind loads, while the IP rated junction box improves protection in harsh outdoor environments.

Lower system level energy costs: High power classes cut the number of modules, mounting components, and electrical connections, which helps reduce balance of system costs and overall levelized cost of energy for large projects.

Broad compatibility for easier design: The module is designed to integrate with mainstream inverters and tracking systems, simplifying string design and supporting flexible layouts for ground mount and rooftop applications.

How It Works

This mono bifacial dual glass module converts sunlight into usable direct current power through high efficiency monocrystalline cells. Each of the one hundred thirty two half cut cells is manufactured from advanced mono wafers that capture photons through the photovoltaic effect. When light strikes the cell surfaces, electrons are released and guided by the cell structure to create a stable electrical current. The module operates at a rated maximum power of up to six hundred seventy watts under standard test conditions. Voltage and current are balanced through the specific combination of 210 millimeter cells and half cut layout. The dual glass design allows light to reach the rear side, where additional power is produced from ground reflection or light scattering around the array. Bifacial gain can significantly increase energy yield in installations using bright surfaces, elevated mounting, or tracking systems. The module connects into a string through its junction box and diodes, with current then fed into a compatible inverter that converts direct current into grid ready alternating current power.

Front side power generation: The front glass captures direct and diffuse sunlight and channels it to the mono cells, which then generate a direct current at a nominal voltage around thirty eight volts at maximum power for the six hundred seventy watt type. This current flows through the cell interconnections and busbars before leaving the module through the junction box terminals.

Rear side bifacial gain: The transparent back glass enables additional light to reach the rear cell surfaces, producing extra current without increasing module footprint. On suitable surfaces, bifacial gain between five and twenty five percent is achievable, which boosts total energy harvest over the system lifetime.

Temperature and reliability management: The module is optimized to operate within a temperature range from minus forty to plus eighty five degrees Celsius, with a nominal operating temperature around forty five degrees. Carefully engineered temperature coefficients limit power loss as cells heat up, while high quality encapsulation and protective materials safeguard performance in real world conditions.

Technical Specifications

Brand / Manufacturer BYD Company Limited
Country of Origin China
Module Type Mono bifacial dual glass monocrystalline module
Power Range (STC) 645 Wp to 675 Wp
Rated Maximum Power Pmax (MSBK-33 670, STC) 670 Wp
Open Circuit Voltage Voc (MSBK-33 670, STC) 45.98 V
Short Circuit Current Isc (MSBK-33 670, STC) 18.33 A
Voltage at Maximum Power Vmpp (MSBK-33 670, STC) 38.21 V
Current at Maximum Power Impp (MSBK-33 670, STC) 17.54 A
Module Efficiency Range (STC) 20.76 % to 21.73 %
Nominal Pmax (MSBK-33 670, NMOT) 501.5 Wp
Open Circuit Voltage Voc (MSBK-33 670, NMOT) 43.10 V
Short Circuit Current Isc (MSBK-33 670, NMOT) 14.78 A
Voltage at Maximum Power Vmpp (MSBK-33 670, NMOT) 35.70 V
Current at Maximum Power Impp (MSBK-33 670, NMOT) 14.04 A
Power Tolerance 0 to +5 W (0 to +0.5 % typical)
Bifacial Factor 70 % ± 5 %
Cell Type and Size 210 mm mono monocrystalline cells
Cell Count 132 half cut cells
Glass Type and Thickness Dual glass with anti reflection coating, 2 mm thickness each side
Frame Type High strength anodized aluminium frame
Junction Box Protection and Diodes Three diodes, IP rated junction box
Panel Dimensions (H × W × D) 2384 × 1303 × 35 mm
Weight 38.7 kg
Operating Temperature Range -40 °C to +85 °C
Nominal Module Operating Temperature (NMOT) 45 °C ± 2 °C at 800 W/m² irradiance
Maximum System Voltage 1500 V DC
Maximum Series Fuse Rating 35 A
Fire Safety Class Class C
Temperature Coefficient of Pmax -0.328 % / °C
Temperature Coefficient of Voc -0.254 % / °C
Temperature Coefficient of Isc +0.041 % / °C

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.
Inverter Compatibility: Designed for excellent compatibility with mainstream string inverters and single axis tracking systems in utility, commercial, and industrial projects.
Environmental: Suitable for harsh environments, including high mechanical load regions and challenging climates, with robust glass glass build and sealed junction box for reliable outdoor operation.
Warranty: 12 year product workmanship warranty and 30 year linear performance warranty with maximum 0.50 % annual degradation and guaranteed 83.5 % of the original power output at year 30.

Documentation

Product Datasheet (PDF)

● Available | Contact us for lead time and project specific pricing

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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

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Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Be Smart, Buy From an Authorized Dealer

When you choose Portlandia Electric Supply, you’re buying real products from a trusted company with established supplier relationships. Enjoy peace of mind with 100% manufacturer warranty coverage and lifetime customer support. In an age where online shopping is fraught with risks, it’s crucial to avoid fly-by-night websites that skirt regulations. Shop with confidence, knowing you’re getting genuine quality and reliable service.

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