Maxeon Solar SPR-MAX3-390- COM
Maxeon Solar SPR-MAX3-390- COM
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SKU  PES-SPS-SOL-12464

Maxeon Solar SPR-MAX3-390- COM

Maxeon Solar SPR-MAX3-390- COM

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

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truck
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.

In High Demand! Order Now To Secure Your Items

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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.

Maxeon Solar SPR-MAX3-390 390W Back Contact Solar Panel

Model SPR-MAX3-390- COM | Back Contact | 104 Cell Monocrystalline | Residential | 1000V System Voltage

390 W
Max Power Output
21.5%
Module Efficiency
104
Monocrystalline Cells

Product Overview

The Maxeon Solar SPR-MAX3-390 is a premium back contact solar panel built for residential rooftops that demand strong energy output and long-term reliability. It combines advanced Maxeon Gen III cell technology with a compact 104-cell design. This model is engineered to perform efficiently in high temperatures and low-light conditions. It also helps maximize energy production where available roof space is limited. With a 390W output and up to 21.5% efficiency, it is designed to deliver excellent performance over many years. The panel is supported by a 40-year product warranty and a strong degradation profile. That makes it a smart choice for homeowners seeking dependable solar investment value.

Key Benefits

High efficiency output: This panel reaches up to 21.5% efficiency for better energy production per square meter.

Excellent temperature performance: Its low temperature coefficient helps maintain stronger output in hot operating conditions.

Long-term durability: A solid back contact design and premium construction support reliable performance over time.

Low-light advantage: Energy harvest is enhanced in partial shade and low-light conditions for more consistent generation.

Strong warranty protection: A 40-year product warranty supports long-term ownership confidence and value.

How It Works

The Maxeon Solar SPR-MAX3-390 converts sunlight into usable electricity through advanced back contact cell architecture. Electrical connections are placed behind the cell surface, which helps improve light capture. This design reduces front-side shading and supports higher efficiency. The 104-cell layout is optimized for residential use and stable performance. When sunlight strikes the tempered glass surface, the monocrystalline cells generate direct current. The module then delivers that power through MC4 connectors for system integration. Its engineering also helps sustain output in heat, shade, and demanding weather conditions.

Back contact cell design: Electrical pathways are moved away from the front surface. This allows more sunlight to reach the active cell area.

Power conversion process: The monocrystalline cells convert incoming solar energy into DC power. That power is then carried through the module for system use.

Durability and protection: Tempered anti-reflective glass and an anodized aluminum frame support rugged outdoor use. The module is also built to resist environmental stress.

Technical Specifications

Model Number SPR-MAX3-390- COM
Maximum Power 390 Wp
Power Tolerance 0 ~ +5%
Panel Efficiency Up to 21.5%
Cell Technology Back Contact, Monocrystalline Maxeon Gen III
Cell Count 104 Cells
Rated Voltage (Vmpp) 63.1 V
Rated Current (Impp) 6.02 A
Open-Circuit Voltage (Voc) 75.0 V
Short-Circuit Current (Isc) 6.53 A
Maximum System Voltage 1000 V IEC
Maximum Series Fuse 20 A
Operating Temperature Range -40°C to 85°C
Temperature Coefficient of Pmax -0.27%/°C
Temperature Coefficient of Voc -0.236%/°C
Temperature Coefficient of Isc 0.058%/°C
Dimensions 1690 x 1046 x 40 mm
Weight 19 kg
Glass Type Anti-reflection coated tempered glass
Frame Type Anodized aluminium
Junction Box IP68, 3 bypass diodes
Connector Type MC4
Cable Length 1200 mm
Solar Cells 104 Monocrystalline Cells

Certifications & Compliance

Certifications: IEC 61215, IEC 61730, ISO 9001:2015, ISO 14001:2015, IEC 62716, IEC 60068-2-68, MIL-STD-810G
Inverter Compatibility: Compatible with standard residential solar inverters using MC4 connections
Environmental: Engineered for -40°C to 85°C operation, hail resistance, and high wind and snow loads
Warranty: 40-year product warranty, 15-year power warranty to 94.5%, and 30-year power warranty to 90.75% with 0.31% total degradation rate

Documentation

Product Datasheet (PDF)

● Available | Contact us for lead time and pricing

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

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.

Maxeon Solar SPR-MAX3-390 390W Back Contact Solar Panel

Model SPR-MAX3-390- COM | Back Contact | 104 Cell Monocrystalline | Residential | 1000V System Voltage

390 W
Max Power Output
21.5%
Module Efficiency
104
Monocrystalline Cells

Product Overview

The Maxeon Solar SPR-MAX3-390 is a premium back contact solar panel built for residential rooftops that demand strong energy output and long-term reliability. It combines advanced Maxeon Gen III cell technology with a compact 104-cell design. This model is engineered to perform efficiently in high temperatures and low-light conditions. It also helps maximize energy production where available roof space is limited. With a 390W output and up to 21.5% efficiency, it is designed to deliver excellent performance over many years. The panel is supported by a 40-year product warranty and a strong degradation profile. That makes it a smart choice for homeowners seeking dependable solar investment value.

Key Benefits

High efficiency output: This panel reaches up to 21.5% efficiency for better energy production per square meter.

Excellent temperature performance: Its low temperature coefficient helps maintain stronger output in hot operating conditions.

Long-term durability: A solid back contact design and premium construction support reliable performance over time.

Low-light advantage: Energy harvest is enhanced in partial shade and low-light conditions for more consistent generation.

Strong warranty protection: A 40-year product warranty supports long-term ownership confidence and value.

How It Works

The Maxeon Solar SPR-MAX3-390 converts sunlight into usable electricity through advanced back contact cell architecture. Electrical connections are placed behind the cell surface, which helps improve light capture. This design reduces front-side shading and supports higher efficiency. The 104-cell layout is optimized for residential use and stable performance. When sunlight strikes the tempered glass surface, the monocrystalline cells generate direct current. The module then delivers that power through MC4 connectors for system integration. Its engineering also helps sustain output in heat, shade, and demanding weather conditions.

Back contact cell design: Electrical pathways are moved away from the front surface. This allows more sunlight to reach the active cell area.

Power conversion process: The monocrystalline cells convert incoming solar energy into DC power. That power is then carried through the module for system use.

Durability and protection: Tempered anti-reflective glass and an anodized aluminum frame support rugged outdoor use. The module is also built to resist environmental stress.

Technical Specifications

Model Number SPR-MAX3-390- COM
Maximum Power 390 Wp
Power Tolerance 0 ~ +5%
Panel Efficiency Up to 21.5%
Cell Technology Back Contact, Monocrystalline Maxeon Gen III
Cell Count 104 Cells
Rated Voltage (Vmpp) 63.1 V
Rated Current (Impp) 6.02 A
Open-Circuit Voltage (Voc) 75.0 V
Short-Circuit Current (Isc) 6.53 A
Maximum System Voltage 1000 V IEC
Maximum Series Fuse 20 A
Operating Temperature Range -40°C to 85°C
Temperature Coefficient of Pmax -0.27%/°C
Temperature Coefficient of Voc -0.236%/°C
Temperature Coefficient of Isc 0.058%/°C
Dimensions 1690 x 1046 x 40 mm
Weight 19 kg
Glass Type Anti-reflection coated tempered glass
Frame Type Anodized aluminium
Junction Box IP68, 3 bypass diodes
Connector Type MC4
Cable Length 1200 mm
Solar Cells 104 Monocrystalline Cells

Certifications & Compliance

Certifications: IEC 61215, IEC 61730, ISO 9001:2015, ISO 14001:2015, IEC 62716, IEC 60068-2-68, MIL-STD-810G
Inverter Compatibility: Compatible with standard residential solar inverters using MC4 connections
Environmental: Engineered for -40°C to 85°C operation, hail resistance, and high wind and snow loads
Warranty: 40-year product warranty, 15-year power warranty to 94.5%, and 30-year power warranty to 90.75% with 0.31% total degradation rate

Documentation

Product Datasheet (PDF)

● Available | Contact us for lead time and 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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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

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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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