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Phono Solar 370W Solar Panel 120 cell PS370M4H-20/UHB Wholesale

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(82 ratings)

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Customer reviews & Questions

Verified buyer reviews
Customer Reviews A1 SolarStore on trustpilot
  • Reviews (82)
  • Questions (3)
The product and the process were easy and smooth. We picked up the panels at one of their fulfillment centers, and everything was simple and straightforward. We had a couple phone calls with customer service to arrange details, and they were helpful and accurate in their information. Definitely a 5-star experience, at a great price.
I was worried about how these panels would perform in Texas heat, but they handle high temperatures well. No drop in efficiency, even when it’s scorching outside.
I run a small farm, and these solar panels help power my irrigation system. They handle the workload well, even during peak summer months.
I've been using for over a year already. no issues so far. In fact, I came back for another pallet for my vacation home and decided to drop a review
Choosing the right solar panels was challenging, but the staff made it much easier. Their expertise was invaluable, and I ended up making an informed decision that I'm very satisfied with. The panels are working great, and I couldn't be happier.
I've been using for over a year already. no issues so far. In fact, I came back for another pallet for my vacation home and decided to drop a review
I run a small farm, and these solar panels help power my irrigation system. They handle the workload well, even during peak summer months.
Choosing the right solar panels was challenging, but the staff made it much easier. Their expertise was invaluable, and I ended up making an informed decision that I'm very satisfied with. The panels are working great, and I couldn't be happier.
I run a small farm, and these solar panels help power my irrigation system. They handle the workload well, even during peak summer months.
I was worried about how these panels would perform in Texas heat, but they handle high temperatures well. No drop in efficiency, even when it’s scorching outside.
I've been using these panels for a year now in the Nevada desert and they've been working fantastic. I'm pulling power out of 27 of them (3 arrays of 9 panels) with two EG4 6000XP and getting better than expected efficiency.
Good customer service, but one of the solar panels arrived damaged. It was replaced without any issues
I was worried about how these panels would perform in Texas heat, but they handle high temperatures well. No drop in efficiency, even when it’s scorching outside.
The panels are working fine so far , I run an 8 KW system
Very good service and panels
Everything LOOKS good, but while the spec sheet and web site list the load ratings at 5400 / 2400 pa, the actual sticker on the module says 3600 / 1600 pa. Be careful if you live in a high snow/wind load area!
These panels deliver outstanding performance. We used them for a commercial project, and the results have been fantastic. Highly recommend for anyone looking for a reliable solar solution!
The panels work well, but if they’re not installed over a reflective surface, the bifacial effect is minimal. Other than that, they are high-quality and efficient!
I appreciate your service. Your engineer was very skillful and Melanie on the phone is a sweetheart
These are great reliable panels, and 4 of them a a great match for EcoFlow Delta Pro power stations.
phono solar doesnt mess around these are commercial grade and built to last.
appears to be working to specifications. thanks A1 Solar!
Love the 590W output Fewer panels needed for my system saved on install time
The panels are great, but proper installation is key to maximizing the bifacial effect. Be sure to place them over a reflective surface to get the best results.
I was worried about how these panels would perform in Texas heat, but they handle high temperatures well. No drop in efficiency, even when it’s scorching outside.
appears to be working to specifications. thanks A1 Solar!
A solid panel, thank you for quick reactions and delivery
The panels are working fine so far , I run an 8 KW system
I was skeptical at first, but these solar panels have significantly cut my electricity bill. Living in Arizona, I get plenty of sunlight, and these panels make the most of it
I run a small farm, and these solar panels help power my irrigation system. They handle the workload well, even during peak summer months.
The panels are working fine so far , I run an 8 KW system
These panels deliver outstanding performance. We used them for a commercial project, and the results have been fantastic. Highly recommend for anyone looking for a reliable solar solution!
I've been using for over a year already. no issues so far. In fact, I came back for another pallet for my vacation home and decided to drop a review
Very good service and panels
I bought these panels for my vacation home, and they exceeded my expectations. High power output, reliable even on cloudy days. The efficiency matches the specifications. Will definitely buy more!
I appreciate your service. Your engineer was very skillful and Melanie on the phone is a sweetheart
Excellent quality and easy installation. Even during cloudy days, they generate enough power to keep my home running efficiently. Definitely worth the investment
They perform well, but the price is on the higher side. I hope they pay off in the long run. Installation was smooth, and the power output meets my needs.
good panel, very nice looking
Good customer service, but one of the solar panels arrived damaged. It was replaced without any issues
I appreciate the service
appears to be working to specifications. thanks A1 Solar!
Very good service and panels
We paid close attention to the panel's appearance. They've got that sleek, contemporary all-black look. We recommend both Phono panels and A1Solar store
The panels are working fine so far , I run an 8 KW system
Choosing the right solar panels was challenging, but the staff made it much easier. Their expertise was invaluable, and I ended up making an informed decision that I'm very satisfied with. The panels are working great, and I couldn't be happier.
Instead of spending a fortune on LG NeON panels, you can get comparable performance from these Phono solar panels... Perform as intended...
Installed 10 of these panels on my roof, and they generate plenty of power even during winter. The bifacial technology really works – the backside also contributes to energy production. Highly recommend!
The panels are working fine so far , I run an 8 KW system
appears to be working to specifications. thanks A1 Solar!
appears to be working to specifications. thanks A1 Solar!
Lovely, modern-looking panels. A very good impression from the panels thus far. The panels themselves show about 5% production-related variation, but I guess this is normal
The panels work well, but if they’re not installed over a reflective surface, the bifacial effect is minimal. Other than that, they are high-quality and efficient!
appears to be working to specifications. thanks A1 Solar!
The panels are working fine so far , I run an 8 KW system
Hey guys, just wanted to leave a quick review for the Phono 400W solar panels I recently purchased from A1. I gotta say, I'm pretty impressed. The installation process was a bit of a pain, but that's just because I'm not really a DIY guy. Once the system was up and running though, it's been smooth sailing. I've noticed a significant decrease in my energy bills, and it feels great knowing that I'm doing my part for the environment.
A1Solar was recommended by a family member. Always great prices, fast deliveries, knowledgeable staff
The panels have been up and running for me for a little over a month without a hitch. They're the perfect color match for my roof's dark gray shingles, and they look great there.
To be honest, we did not choose these panels, just took the advice of our installer. So far Phono seems a very solid brand
Phono Solar is a huge, highly diversified company with solid financials. I opted for the all-black variety of solar panels, so they stand out visually. The energy output is in line with expectations. The item has exceeded my expectations.
They deliver exactly what was advertised in the datasheet. The contrast between the silver and the black looks very impressive.
A1Solar was recommended by a family member. Always great prices, fast deliveries, knowledgeable staff
A reliable workhorse. But what it has in reliability and affordability it lacks in aesthetics
Cheap and reliable
Hi, I'm Kim and I recently had the Phono 545 TwinPlus panels installed on our roof. I was looking for a solar panel that could produce enough energy for my small business, and this one exceeded my expectations. The 144 cells generate a lot of power even on cloudy days, and the panels blend in well with my roof. The installation and interconnection were quick and easy, and the panels seem durable and well-built.
I installed the Phono 400 W solar panels on my roof and I'm happy with how they're performing. The installation was straightforward and the modules look well-made. I like that it packs a lot of power in a compact size. I haven't had any issues with so far, and I get quite a bit of energy even on cloudy days. Overall, I would recommend this panel to anyone looking for a reliable, cheap and high-performing panels.
In reality, the panels are producing just a little bit more than their rating. A1 solar has the best service and fastest deliveries
Lovely, modern-looking panels. A very good impression from the panels thus far. The panels themselves show about 5% production-related variation, but I guess this is normal
We paid close attention to the panel's appearance. They've got that sleek, contemporary all-black look. We recommend both Phono panels and A1Solar store
They deliver exactly what was advertised in the datasheet. The contrast between the silver and the black looks very impressive.
Pickup is one thing that most of the other solar stores don't have and A1 does. No more worrying about getting broken panels or waiting for days, just make an order and pick it up the next day after work. But it is very disappointing to discover that a panel you need is not available at a nearby fulfillment center. I hope you fix this in the future
Instead of spending a fortune on LG NeON panels, you can get comparable performance from these Phono solar panels... Perform as intended...
The panels have been up and running for me for a little over a month without a hitch. They're the perfect color match for my roof's dark gray shingles, and they look great there.
To be honest, we did not choose these panels, just took the advice of our installer. So far Phono seems a very solid brand
Phono Solar is a huge, highly diversified company with solid financials. I opted for the all-black variety of solar panels, so they stand out visually. The energy output is in line with expectations. The item has exceeded my expectations.
In reality, the panels are producing just a little bit more than their rating. A1 solar has the best service and fastest deliveries
So far, everything appears okay. I believe we generate around 40 each day, but I'm not sure. The most generation happens from 10 am to 4 pm.
Need a few more months and bills before I can comment on our new system. But the store did a great job, we enjoyed working with you guys
Due to the configuration of our roof, the system had to be divided into three arrays, each having 16 panels facing west and 8 panels facing north. We generate 40 kWh on average daily and nearly 60 kWh on clear days. For our purposes, the micro inverters are wonderful. We couldn't produce anything close to these numbers using a string system.
Michael
10/15/2022
I am concerned about the loss of amperage on a 12 V system. If I should put the panels 120 feet away from my battery bank?
A1 SolarStore
To mitigate the losses, pick high-quality solar cable and make sure its diameter is right for your system configuration.
Pete mletschnig
10/15/2022
Are your panels marine grade fixed , non-flexible monocrystalline?
A1 SolarStore
Yes, these panels are monocrystalline, non-flexible and highly weatherproof.
Bill McPeak
10/15/2022
can I get jest one at time
A1 SolarStore
Typically, you can order a single panel and use our pickup option to receive it. However, this doesn't apply to our wholesale section - here we sell solar panels by the pallet. To find and order this very panel, please leave the wholesale section by clicking "Solar panels" at the very top of this page.

Specification

Rated Power Output 370 W
Voltage (VOC)41.9 V
Maximum String Voltage 1500 V
Number of cells120 Cell
Cell TypeMonocrystalline
Rated Efficiency20.31 %
Connector TypeMC4
Backsheet ColorBlack Backsheet
Frame ColorBlack Frame
Dimensions LxWxH69.09 x 40.87 x 1.38 in
Pallet Qty31
ManufacturerPhono Solar
Manufacturer Part #PS370M4H-20/UHB
Operating Temperatures −40°F to +185°F
Scope of Application
  • Buildings
  • Home
Use
  • Commercial
  • Grid-Tie
  • Off-Grid
  • Residential
Warranty12-year warranty extendable 25 years

Close-wattage solar panels

4 products

Attachments

FAQ

How much is shipping and how long is delivery?
Our standard shipping charge is $250 for up to 11 panels and it is increased by $25 for every 4 additional panels. In the event, the product is only available on East or West coast custom quote will be sent to you before the order is processed. Normally, we are able to deliver solar panels within 7 business days.
What is the difference between low price panels and top price panels?
With top tier solar panels, you pay for the brand name, proprietary new technology, higher energy output, and better warranty support.
What are the dimensions of the panel?
Please refer to the product datasheet on the product page. We have a datasheet for every product we sell.
How long is the warranty on the panel?
In general, manufacturers provide a 25 year-long performance warranty and a 10 year-long equipment guarantee. Some manufacturers offer 12-15 years of warranty. More information is available in our warranty support section.
Which panels do you recommend for RV, marine?
We recommend Panasonic and Mission Solar panels for smaller systems as their high energy output and excellent craftsmanship guarantee years of service.
Can this panel be used with a 12v system?
Any of our panels can be used for a 12v system with a properly selected inverter and charge controller.
Can I pick up this panel from your fulfillment center to save on shipping?
Yes, we can set up a pick up at a local distributor. Please call to discuss options and stock availability.
How do I connect these panels?
To achieve the best system efficiency, panels should be connected in series to create higher voltage.
How many panels do I need?
This number is determined by your average energy needs. Depending on the type of panels and energy consumption, you might need anywhere from 12 to 45 solar panels. Remember, the more panels you install the more energy you will get.Please use our solar calculator to estimate your energy consumption and plan on building a solar system that will exceed your energy needs by 25%.
How do I build a solar system?
Please use our solar calculator to estimate what equipment you need. Choose your panels, microinverters, inverters, and solar batteries if necessary.Please note that we do not offer solar system design or installation.
How do solar panels compare?
Solar panels differ by power output, voltage, connection type, size, efficiency, and weight. Some solar panels might be sold together with microinverters as a set.
Can I build a solar system by myself as a Do It Yourself project?
Yes, it is possible if you understand what solar equipment you need and how to connect it together. However, please be mindful that handling your own electrical work without having proper experience might cause life-threatening injuries. Please contact a certified electrician if you do not possess appropriate electrical skills.
Can I connect and charge my solar panel battery directly with the solar panel?
We do not recommend using the solar panel without the charge controller. Using solar panels without the charge controller might damage the batteries.
Can I drill holes into the aluminum frame for mounting?
We do not recommend drilling any new holes to the aluminum frame of the panel as it could damage the internal circuit and solar cells. (Also, any modification to the panel will void the warranty). We recommend only using the pre-drilled holes for mounting.
Do solar panels require maintenance? Can I wash my solar panel?
Solar panels generally require very little maintenance. We recommend cleaning the solar panel with water, glass cleaner (Windex) and microfiber cloth.
Will my panel produce power in an overcast condition?
While solar panels require sunlight to generate solar energy, they will still work in cloudy weather. Even on a cloudy day, solar panels will produce energy just not as much.
Will my panels produce power if covered with snow?
Solar panels cannot produce electricity if covered with snow.
What is the best direction for a solar panel to face?
The best direction for a solar panel to face is the South

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About product

PS M4H 20UHB is part of the TwinPlus Series — one of the most recent made by Phono Solar. These panels employ cutting-edge technologies to achieve superior efficiency and reliability. The Passivated Emitter Rear Contact (PERC) technology ensures excellent power output. This solar cell type employs an additional reflective layer to absorb more sunlight. 

Another advantage is the half-cut cell technology. PS M4H 20UHB has solar cells half the size of those installed in conventional panels. The main benefits are decreased power loss, improved longevity and better low-light performance. Given its size and weight, PS M4H 20UHB efficiency of 20.31% is quite impressive. Novel design solutions allow this panel to look as well as it performs. This model is just 1.38" in depth and is jet black with a sleek finish. The panel's functionality and durability are not affected by its aesthetic appeal though. Phono Solar provides a 12-year product warranty. Stable power output is also guaranteed — performance warranty will protect you during 25 years. 

  • 120 half-cut PERC cells
  • 370 W nameplate capacity
  • 20.31% efficiency
  • 1500 V DC maximum system voltage
  • MC4 connectors
  • 12 years of product and 25 years of performance warranty

More energy and efficiency

The PERC technology further improves an already excellent efficiency of 20.31 percent. A reliable PID resistance and a unique glass lamination were added by the maker, which ultimately produced a model that was effective and extremely durable. PS M4H 20UHB produces 370 W of power under typical test settings.

Heat-resistant performance

The heat is less of a problem with this module: with one of the industry's lowest temperature coefficients, PS M4H 20UHB loses just 0.36% of efficiency for every 1.8°F over 77°F.

High quality standards

Multiple tests are part of the Phono Solar tight production requirements, which offer the highest level of quality assurance. Because of the facilities' high degree of automation, the business is able to uphold strict standards and minimize the number of warranty claims to an absolute minimum.

Low degradation for increased lifespan

The amount of power output loss experienced by these panels during the first year of operation will not exceed 2%. The average yearly power drop from the second to the 25th year will not surpass 0.50%. After 25 years, the module will still produce more than 86% of its initial output.

Certified for the most challenging environmental conditions

PS M4H 20UHB is resistant to PID, salt, acid and ammonia. It can also withstand up to 5400 Pa mechanical load on the front and 2400 Pa on the back. Such robustness is mainly due to the 1.38" thick anodized aluminum frame and a layer of protective glass.

Outstanding all-black design

The panel features all-black design which looks great on any roof. The manufacturer ensures excellent cell color by special treatment and selection processes. Phono Solar engineers use thinner wires to connect the cells together, and at a distance the surface of the modules appears smooth and uninterrupted.

Size

69.09" x 40.87" x 1.38"

Weight

44.75 lb

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