BYD MSBK-33 665
BYD MSBK-33 665
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SKU  PES-SPS-SOL-1933

BYD MSBK-33 665

BYD MSBK-33 665

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

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In Stock

Get yours today!

truck
9+ sold

In the last 7 days

truck
Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

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What is your return policy?

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.

What’s covered by your return policy?

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.

How long will it take to receive my order?

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.

What are your financing and payment options?

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.

How does your Lifetime Customer Support work?

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 665W Mono Bifacial Monocrystalline Solar Panel

Model MSBK-33 665 | Mono Bifacial Dual Glass | 132 Monocrystalline Cells | Bifacial | 1500V System Voltage

665 Wp
Max Power Output
21.41 %
Module Efficiency
132
N-Type TOPCon

Product Overview

The BYD MSBK-33 665W mono bifacial monocrystalline solar panel delivers high power density for large projects. This premium dual glass module is engineered for commercial, industrial, and utility scale solar arrays. Its monocrystalline cells and bifacial design help maximize yield on constrained rooftops and ground mount sites. Rated up to 665 Wp under STC, the panel reaches a module efficiency of 21.41 percent. A robust dual glass construction pairs with an anodized aluminium frame for long term structural stability. The module is optimized for 1500V DC systems, allowing efficient string design and reduced balance of system costs. With a 12 year product warranty and a 30 year linear power warranty, long term performance is strongly supported. Power degradation is limited, with 83.5 percent of initial output retained after 30 years of operation. The module suits customers seeking reliable high output panels from a global Tier 1 manufacturer. Its combination of efficiency, durability, and long warranties makes it ideal for bankable solar investments.

Key Benefits

High Power Density: Each module delivers up to 665 Wp, enabling more power from fewer panels on site.

Excellent Module Efficiency: Panel efficiency up to 21.41 percent helps optimize system yield on limited roof or land space.

Bifacial Energy Gain: Dual sided generation allows additional rear side power, improving overall kWh production over time.

Long Term Reliability: A 12 year product warranty and 30 year linear power warranty support stable long life performance.

Robust Mechanical Design: Dual glass construction and high strength aluminium frame provide strong resistance to harsh conditions.

Low Degradation Rate: Annual power degradation is limited to 0.55 percent, preserving long term energy yields and revenue.

How It Works

This dual glass mono bifacial module converts sunlight into direct current power using advanced monocrystalline cells. Light striking the front glass is absorbed by the 132 high efficiency cells, producing electrical current. The rear side also captures reflected and diffuse light, increasing total power generation over each day. Electricity flows through the integrated junction box and diodes to your DC cabling and inverter. The inverter converts this DC power into usable AC electricity for onsite loads or grid export. Thermal design and optimized temperature coefficients help maintain strong performance in hot conditions. With a 1500V maximum system voltage, string lengths can be extended to reduce cabling and hardware. Over decades of operation, tested materials protect against moisture, UV, and mechanical stress. The result is a stable and predictable energy source for commercial, industrial, and utility applications.

Front Side Power Generation: Sunlight passes through the anti reflection coated glass and reaches the mono cells. These cells create direct current when photons free charge carriers within the silicon structure.

Rear Side Bifacial Gain: The rear glass allows reflected light from the ground or roof to reach the cell rear. This generates additional current, lifting total output by up to several percent over monofacial modules.

Thermal and Voltage Optimization: The 45±2 °C NMOT and low Pmax temperature coefficient limit power loss in heat. High 1500V system compatibility enables efficient string sizing and reduced balance of system expenses.

Technical Specifications

Brand / Manufacturer BYD Company Limited
Model Number MSBK-33 665
Cell Technology Monocrystalline, Mono Bifacial Dual Glass
Cell Count and Layout 132 cells
Technology Type Bifacial, Dual Glass Module
Power Range 645 Wp to 675 Wp (series range)
Maximum Power at STC (Pmax) 665 Wp
Power Tolerance 0 ~ +5 W (0 ~ +0.5 % typical)
Module Efficiency (STC) 21.41 % (range 20.76 % to 21.73 %)
Voltage at Maximum Power (Vmpp, STC) 38.12 V
Current at Maximum Power (Impp, STC) 17.45 A
Open Circuit Voltage (Voc, STC) 45.85 V
Short Circuit Current (Isc, STC) 18.27 A
Maximum Power at NMOT (Pmax) 497.6 Wp
Voltage at Maximum Power (Vmpp, NMOT) 35.6 V
Current at Maximum Power (Impp, NMOT) 13.99 A
Open Circuit Voltage (Voc, NMOT) 43.0 V
Short Circuit Current (Isc, NMOT) 14.73 A
Nominal Module Operating Temperature (NMOT) 45 ± 2 °C
Operating Temperature Range -40 °C to +85 °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
Bifacial Factor 70 ± 5 %
Fire Safety Class Class C
Front Glass Type Anti reflection coating glass
Glass Thickness 2 mm
Frame Material Anodized aluminium frame
Junction Box and Diodes Junction box with 3 bypass diodes
Junction Box Protection Class IP 68 (IP 6 class in source, taken as IP68)
Module Dimensions (H x W x D) 2384 x 1303 x 35 mm
Module Weight 38.7 kg

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 1500V DC systems and compatible with mainstream string and central inverters and trackers.
Environmental: Suitable for harsh environments including high mechanical loads, ammonia exposure, haze, and low light conditions.
Warranty: 12 year product warranty and 30 year linear power warranty with 0.55 % annual degradation and 83.5 % power retained at year 30.

Documentation

Product Datasheet (PDF)

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

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
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What is your return policy?

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.

What’s covered by your return policy?

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.

How long will it take to receive my order?

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.

What are your financing and payment options?

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.

How does your Lifetime Customer Support work?

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 665W Mono Bifacial Monocrystalline Solar Panel

Model MSBK-33 665 | Mono Bifacial Dual Glass | 132 Monocrystalline Cells | Bifacial | 1500V System Voltage

665 Wp
Max Power Output
21.41 %
Module Efficiency
132
N-Type TOPCon

Product Overview

The BYD MSBK-33 665W mono bifacial monocrystalline solar panel delivers high power density for large projects. This premium dual glass module is engineered for commercial, industrial, and utility scale solar arrays. Its monocrystalline cells and bifacial design help maximize yield on constrained rooftops and ground mount sites. Rated up to 665 Wp under STC, the panel reaches a module efficiency of 21.41 percent. A robust dual glass construction pairs with an anodized aluminium frame for long term structural stability. The module is optimized for 1500V DC systems, allowing efficient string design and reduced balance of system costs. With a 12 year product warranty and a 30 year linear power warranty, long term performance is strongly supported. Power degradation is limited, with 83.5 percent of initial output retained after 30 years of operation. The module suits customers seeking reliable high output panels from a global Tier 1 manufacturer. Its combination of efficiency, durability, and long warranties makes it ideal for bankable solar investments.

Key Benefits

High Power Density: Each module delivers up to 665 Wp, enabling more power from fewer panels on site.

Excellent Module Efficiency: Panel efficiency up to 21.41 percent helps optimize system yield on limited roof or land space.

Bifacial Energy Gain: Dual sided generation allows additional rear side power, improving overall kWh production over time.

Long Term Reliability: A 12 year product warranty and 30 year linear power warranty support stable long life performance.

Robust Mechanical Design: Dual glass construction and high strength aluminium frame provide strong resistance to harsh conditions.

Low Degradation Rate: Annual power degradation is limited to 0.55 percent, preserving long term energy yields and revenue.

How It Works

This dual glass mono bifacial module converts sunlight into direct current power using advanced monocrystalline cells. Light striking the front glass is absorbed by the 132 high efficiency cells, producing electrical current. The rear side also captures reflected and diffuse light, increasing total power generation over each day. Electricity flows through the integrated junction box and diodes to your DC cabling and inverter. The inverter converts this DC power into usable AC electricity for onsite loads or grid export. Thermal design and optimized temperature coefficients help maintain strong performance in hot conditions. With a 1500V maximum system voltage, string lengths can be extended to reduce cabling and hardware. Over decades of operation, tested materials protect against moisture, UV, and mechanical stress. The result is a stable and predictable energy source for commercial, industrial, and utility applications.

Front Side Power Generation: Sunlight passes through the anti reflection coated glass and reaches the mono cells. These cells create direct current when photons free charge carriers within the silicon structure.

Rear Side Bifacial Gain: The rear glass allows reflected light from the ground or roof to reach the cell rear. This generates additional current, lifting total output by up to several percent over monofacial modules.

Thermal and Voltage Optimization: The 45±2 °C NMOT and low Pmax temperature coefficient limit power loss in heat. High 1500V system compatibility enables efficient string sizing and reduced balance of system expenses.

Technical Specifications

Brand / Manufacturer BYD Company Limited
Model Number MSBK-33 665
Cell Technology Monocrystalline, Mono Bifacial Dual Glass
Cell Count and Layout 132 cells
Technology Type Bifacial, Dual Glass Module
Power Range 645 Wp to 675 Wp (series range)
Maximum Power at STC (Pmax) 665 Wp
Power Tolerance 0 ~ +5 W (0 ~ +0.5 % typical)
Module Efficiency (STC) 21.41 % (range 20.76 % to 21.73 %)
Voltage at Maximum Power (Vmpp, STC) 38.12 V
Current at Maximum Power (Impp, STC) 17.45 A
Open Circuit Voltage (Voc, STC) 45.85 V
Short Circuit Current (Isc, STC) 18.27 A
Maximum Power at NMOT (Pmax) 497.6 Wp
Voltage at Maximum Power (Vmpp, NMOT) 35.6 V
Current at Maximum Power (Impp, NMOT) 13.99 A
Open Circuit Voltage (Voc, NMOT) 43.0 V
Short Circuit Current (Isc, NMOT) 14.73 A
Nominal Module Operating Temperature (NMOT) 45 ± 2 °C
Operating Temperature Range -40 °C to +85 °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
Bifacial Factor 70 ± 5 %
Fire Safety Class Class C
Front Glass Type Anti reflection coating glass
Glass Thickness 2 mm
Frame Material Anodized aluminium frame
Junction Box and Diodes Junction box with 3 bypass diodes
Junction Box Protection Class IP 68 (IP 6 class in source, taken as IP68)
Module Dimensions (H x W x D) 2384 x 1303 x 35 mm
Module Weight 38.7 kg

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 1500V DC systems and compatible with mainstream string and central inverters and trackers.
Environmental: Suitable for harsh environments including high mechanical loads, ammonia exposure, haze, and low light conditions.
Warranty: 12 year product warranty and 30 year linear power warranty with 0.55 % annual degradation and 83.5 % power retained 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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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

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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Customers rate us 4.3/5 based on 4 reviews.