Solar Panel Cost Per Watt

Solar Panel Cost Per Watt

You may be wondering how much a solar panel costs. The answer to that question depends on the wattage of the panel. In this blog post, we’ll break down the cost per watt for solar panels to help you better understand what you’re investing in. Keep reading to learn more!

Let’s start by looking at the average cost of solar panels in the United States. According to SolarReviews, the average cost per watt is $3.72 for residential solar panel installations and $2.16 for commercial solar panel installations. This data is based on statistics from 2013, so it could be different now given how much technology has changed in the last few years.

Now that you know how much a solar panel costs, it’s important to understand another crucial fact: How much power does each watt provide? According to Geophysical Research Letters, “The electrical power produced depends on the available irradiance and the efficiency of the solar panels.”

What is a watt?

The term ‘watt’ refers to the power used by an electrical device such as a light bulb.” Since each solar panel is capable of producing a certain amount of energy per day, we can calculate how many watts the solar panels produce over time and determine exactly how much they cost.

You can get a solar panel that produces 1 watt of power for $3.72 or 3 watts for $11.44. If you get a 3-watt solar panel, your daily production will be 3 watts x 8 hours = 24 watt-hours (Wh) per day. This means you would get 1,728 Wh per day from your 1-watt solar panel and 8,640 Wh per day from the 3-watt solar panel.

To use a car analogy: Say you buy a gas guzzler for $10,000 and it gets 10 miles to the gallon. At $2.50 per gallon, you would have to fill up the tank 28 times a year. This is equivalent to each gallon costing $70 ($2.50 x 28).

If you were to buy a more efficient car for $30,000 and it got 30 miles per gallon, then it would only need seven gallons at $2.50 per gallon, or $18.

This means that the more efficient car saves you $52.50 per fill up (28 tanks x $18) when compared with the gas guzzler’s price of $70 per fill up (28 tanks x $2.50).

Let’s look at a solar panel example: If you get a 3-watt solar panel, it will provide you with 8,640 Wh per day. Over the course of a year, that’s 2,376,000 Wh. According to our calculations from earlier this equals $565.62 (2,376,000 Wh x $0.14126). This means that each watt saves you about $264 ($565.62 / 3).

So the next time you wonder how much does a solar panel cost, just remember that it’s $3.72 for each watt of power it produces. The more efficient your solar panel is, the more money you will save on your energy bills! Now all you have to do is sit back and relax while powering your house for free.

Does Cost per watt vary from one state to another?

Yes, the cost of solar panels will vary depending on your state. Here are some other factors that can affect how much you pay for your solar panel installation:

“How big is the system you want to install?”

The size of the system plays a major factor in determining how much it costs. Some states give more incentives to people with larger systems, so this could affect the price.

“Are there any tax credits or rebates available in your area?”

If you are getting a solar panel installation done at your home, there may be local and state-level tax credits or rebates that can help reduce the cost of the system. Your contractor will know more about this.

“Is there an installation charge?”

Typically, the installer will not be able to estimate your total cost until they come out to your house and see where you want the solar panel system installed. They may have a flat fee that covers everything though!

What is the cost of solar Panel for home use?

The cost of a solar panel for home use is $3.72 per watt of production.

History Of Solar Panels

History Of Solar Panels

Solar energy has been used over the years to serve various functions and in this article, I have provided a detailed history of solar panels with timelines of their evolution. Solar panels have been around for some time now, with their history dating back to the 19th century. The first idea for a solar panel is attributed to the Greeks when Archimedes used a bronze shield to set fire on ships at the coastline by aiming the rays of the sun on them but this is has been disputed. 

In 1839 a French scientist discovered the photovoltaic effect when experimenting with a cell made of metal electrodes in a conducting solution. This formed the basis for the invention of a solar panel. Years later an American scientist discovered a working solar cell. This showed that it was possible to convert solar energy into electrical energy. This idea was backed by Einstein in 1905 when he published a paper on the photoelectric effect. This increased the awareness of solar panels which made a lot of investors fund the idea. More adjustments were made to the solar cell. A good example is when NASA launched a satellite that was powered by a photovoltaic solar array. Further developments were made to enable solar panels to power entire homesteads and even industries.

Who first invented solar panels?

 A lot of questions have been asked about who invented solar panels and here are some answers. There have been many arguments disproving Archimedes since most say his event; of setting fire on the wooden ships using nothing but a bronze shield and sunlight, lacks a scientific basis. The credit does not belong to a single individual and is instead shared amongst a group of scientists. 

The first being a French physicist, who in 1839 discovered the photovoltaic effect. The photovoltaic effect is the creation of current due to exposure to light. However for this to occur, the electrons in metal conductors such as platinum had to be stimulated by light. This created a basis for solar panels since it was proof that solar energy can be converted into electrical energy. In 1873 Willoughby Smith discovered that selenium could be used as a photoconductor. Three years later in 1876 William Grylls Adams and Richard Evans Day recreated Becquerel’s experiment to show Smith’s results. They went on to publish a paper on the action of light on selenium.

 In 1883 Charles Fritz, an American inventor developed the first working selenium solar panel. This helped stimulate the advancement in technology needed to create the solar panel we have today. The modern design of the solar panels used today was created in 1939 by Russel Ohl. He had replaced selenium with silicon making it commercial. Einstein’s paper on the photoelectric effect had made people aware of the solar panels and thus when introduced for commercial use the business flourished. Another important moment in the development of solar panels is when NASA launched the Nimbus satellite which has a 470-wat photovoltaic panel array to power the satellite.

When were solar panels first used in houses?

After solar panels had been successfully used in outer space the next step was to use them in houses and industries. The first building powered by solar energy was constructed by the University of Delaware in 1973. The building was known as Solar One. Solar energy was achieved by using a combination of both thermal and photovoltaic solar power. The building did not have solar panels and instead had solar integrated rooftops. The design on the rooftops is similar to Tesla’s new roof product. The building proved that solar power could indeed be used at home. It was further stimulated by the energy crisis in the 1970s.

History of solar panels timeline

The origin of solar panels is in the 19th century. A group of scientists discovered the photovoltaic effect which is the principle behind solar panels. This is a brief history of solar panels arranged chronologically.

It all began in 1839 when a French physicist called Edmond Becquerel discovered the photovoltaic effect. He did this by conducting experiments with a cell made of metal electrodes in a conducting solution. His observation was that the cells produced more electricity when exposed to light. This formed the basis for solar panels since their main objective is to convert sunlight into electrical energy.

In 1873 an American scientist called Willoughby Smith discovered that selenium could act as a photoconductor. This was years later after Becquerel had discovered the photovoltaic effect so it acted as a credit to his theory.

In 1876 a few later after Smith’s discovery of selenium as a photoconductor two scientists; William Grylls Adams and Richard Evans Day recreated Becquerel’s experiment and this time used selenium as a conductor which also proved Smith’s theory. The two published a paper and called the action of light on selenium. This was another great breakthrough since by proving that both Smith and Becquerel were right they were a step closer to the invention of solar panels.

A few years later in 1881, Charles Fritts developed the first commercial solar panel. His model seemed very effective as not only worked in continuous and constant sunlight but also when exposed to dim and diffused daylight. Even with this advantage, it could not match the energy produced by coal-fired power plants.

In 1905 Einstein published a paper on the photoelectric effect. This created more awareness and credibility for solar panels. This led to more ideas being developed and years later a better model was designed.

In 1939 Russel Ohl developed a better model of the solar panel and is similar to models used to this day. It was also way better than Fritts’s version.

Another major milestone in the development of solar panels was in 1954 when Bell Labs created a commercially viable silicon solar cell. The cells had a 4 percent efficiency level which was a great step since they could power an electric device for several hours in a day. 

In 1957, Mohamed M. Atalla developed silicon surface passivation by thermal oxidation. This was also done at the Bell Labs. This was one of the improvements on the solar panel that helped increase efficiency.

In 1964 solar panels were used in outer space. This was done by NASA when they launched the Nimbus satellite which was powered by solar energy. Its system comprised of a 470-watt photovoltaic solar panel array which allowed it to convert solar energy into electrical energy.

The success of solar panels in outer space led to the development of the first solar-powered building in 1973. The building was constructed by the University of Delaware and was known as Solar One. It did not have solar panels and instead had solar integrated rooftops. The energy was harnessed through a combination of both thermal and photovoltaic solar power.

In 1981 Paul MacCready developed a solar-powered aircraft known as the Solar Challenger. It flew from France to the U.K. across the English Channel. This created a basis for solar-powered aircraft and was seen in 1998 by the Pathfinder when it set a record of 80000 feet.

When did solar panels become popular?

To determine when solar panels became popular there are various factors to consider. Research shows that there are two stages in history when solar panels became popular among people. The first stage in the 1970s and 1980s. At this stage, various technologies were being developed and the efficiency of solar panels had risen from 4 percent to 10 percent. There had also been a lot of milestones that had been achieved with solar power. For example, the solar-powered building was successful. Solar panels had been installed even in the Whitehouse under President Jimmy Carter. Besides the growing popularity of solar panels, there was an energy crisis in the 1970s. This made people open to other sources of energy and was also the time solar energy was blooming. Influential businessmen and women had invested in solar energy. Another reason why solar energy was popular is that it satisfied both scientific and economical needs in society. This is because there were various innovations taking place as the solar-powered aircraft in 1981. It was also economical as it obtained energy readily available in nature.

The second phase in history where solar energy was becoming popular was in the 21st century. This is because over the years various advancements had been made in solar energy. This had greatly increased the efficiency of the solar panels that by the start of the century the efficiency was over 30 percent. As the inventions grew the cost of using solar energy was lowered which greatly increased their popularity. For example in 2005 solar cells had increased by a great margin and residential solar power became a common thing due to DIY solar panels. New elements were discovered which increased the efficiency of the solar panels. Other inventions made solar energy even more popular. For example, in 2016 Bertrand Piccard completed the first zero-emissions flight around the world. He did this using the Solar Impulse, which is considered the largest and most powerful solar-powered plane.

From the information above it is clear that solar energy has come a long way in the past 300 years. There have been various developments and advancements to make it as efficient as it is today.


Go Power vs Other Portable Solar Panels

Go Power vs Other Portable Solar Panels

The need for alternative power source is rising tremendously which explains why the demand for solar power is up for grabs. Solar panel companies have been providing people with portable solar panels for years, just that people did not consider them. Their popularity intensified after bills started strangling income and unreliable maintenance came on-stream.

Portable solar panels are a great solution for both on-grid applications especially due to unsustainable grid power leading to power outages. They are also a great option for off-grid applications by mounting them on RVs, motorhomes & boats, camping, picnics, and more.

Today, we compare Go Power with other portable solar panels. So, what do they offer and who is the clear winner? In this review, we have blended factors such as brand value, durability & reliability, product value, features & specs, as well as client reviews & ratings.

Go Power vs. Zamp vs. Renogy vs. Victron

REMARK: Since it is impractical to repeat Go Power! review against her competitors on each comparison, I think it is better if I finish everything on Go Power! in the beginning. It would be like copying and pasting the same info.

As such, we can always shoot up here and compare the information. 

About Go Power

Since 1996, Go Power! Electric Inc. has been the leader in mobile solar systems and solutions for RVs, fleets, and marine users. They make superior solar chargers, controllers, power accessories, and inverters that are known for their durability, economical, and reliability.

Their mobile power solutions and products come in handy where grid power is unreachable, unobtainable, and unmaintainable.

On the one hand, Go Power! seems to have a central focus on fleet products compared to its competitors. Their flexible solar panels, for instance, are installed on trucks to power lift gates. Unlike Zamp Solar and Renogy, however, the company completes its trade business and sales for its end-user products via dealers.

Go Power! Boasts a long reliable history with dealerships and also sells. Both companies have kits available online for convenience and reliability. Go Power! Product portfolio includes Marine Solar Kits (50-watts to 200-watts) and Portable Solar Kits (90-watts to 200-watts). Their RV Solar Kits include one panel (190-watts), two panels (380-watts), and three panels (570-watts). Go Power!’s most popular RV solar kit is the Weekender ISW (190-watts).

The Weekender ISW Solar Charging system stands out for being expendable as well as harnessing a 1500-watt pure sine wave inverter. It is goes well together with the 30-amp service. For 50-amp abilities, you can advance to the Solar Elite system (380-watts).

Go Power! pros:

  • Sturdy & flexible solar panels
  • Recognized brand & competitor
  • 25-year warranty
  • Comes pre-installed in some RVs

Go Power! cons:

  • Panels not weather-resistant
  • Handy but old-fashioned

Go Power vs. Renogy

Is choosing between Go Power vs. Renogy getting traumatic? We understand the doubts in your head causing confusion and we shall unwind that to leave a smile on your face. But first, what is Renogy?

Renogy Group Inc., was founded in 2010 and is prominent for being among the leading solar energy brands in the solar panels arena today. This renewable energy brand prides itself in high-grade equipment at an extremely reasonable price, hence its reputation.

So, how does Renogy compare to Go Power?

If you are wondering who the keystone of the solar industry is, meet Renogy! The company is known for excellent solutions for the consumer and commercial markets. No matter how long you want to stay on-grid, Renogy will have something to suit your needs.

Renogy’s product portfolio clears the doubts you have of buying the wrong product by describing what each of their kits is meant for. It includes Home Solar Kits (1200-watts to 4800-watts) that are perfect for your cabin to power low-draw machines, charging personal devices, all the way up to powering high-draw appliances like TVs, refrigerators, and more!

Another product is the Solar Kits for Vans, RVs, & Trailers. The van package produces 100-watts, 200-watts for the trailer package, and 400-watts for the RV package. Next on the line are the Marine Solar Kits that come in two packages producing 200-watts and 350-watts. Next, we have the Outdoors Solar Kits (100-watts) and as the name suggests, you know what it does. Lastly, Renogy offers the Trucking Solar Kits with 200-watts and 350-watts which both run high-draw appliances like game consoles, HVAC systems, and fridges.

Renogy Solar Pros:

  • Makes all-purpose solar panel kits
  • Long line of products
  • 25-year warranty
  • Range of mounting options

Renogy Solar Cons:

  • Space-consuming
  • Simple but overwhelming installation

Our Verdict

If you are looking to buy solar products via dealership, Go Power! is a fantastic choice! You can get their dependable solar kits, batteries, inverters, and chargers. The company boasts a reputation for manufacturing reliable solar products.

It is crystal clear why Renogy deserves the appellation: keystone of the solar industry. As you can see, the company has every solution for your solar system needs. In addition, they are also known for selling reliable solar generators, solar-powered flashlights, power stations, and portable chargers. They also interact directly with their clients.

Go Power vs. Zamp

Are you getting a hard time picking the best here? You are not alone in that and we have come to save you all that time of research and compiling notes to get the best. But what do we know about Zamp Solar anyway?

Zamp Solar was founded in 2010 in Bend, Oregon with focus on producing the highest quality, state-of-the-art, off-grid solar products on the market. Currently, the company is ranks among the best suppliers of US-built off-grid solar panels and accessories.

So, how does Zamp Solar compare to Go Power?

Zamp Solar manufactures its products in the US and they all come with a 25-year warranty. Its product portfolio includes Roof-Mounted Solar Kits (90-watts to 1000-watts), Charge Controllers (5-stage PWM – pulse width modulation), Accessories, and Portable Solar Kits (45-watts to 230-watts) that come in 6 different sizes and strengths.

The company stands out on the market by offering the largest selection of portable kits. Their installation is pretty easy and is an excellent choice for off-grid activities such as tailgating. That being said, it is worth noting that Zamp Solar brands focus most on industrial and residential solutions and interacts directly with its clients.

Zamp Solar Pros:

  • Handcrafted in the US
  • Easy installation
  • Expandable kits (most)
  • Renewable source of energy
  • 25-year warranty

Zamp Solar Cons:

  • Overwhelming installation
  • Eats up space

Our Verdict

Go Power! sells reliable inverters, solar kits, chargers, and batteries and uses the dealership network business model. Besides, they have a reputation for building trusted products. The downside is that they have a feeble direct interaction with clients.

Zamp Solar is a forerunner of off-grid power sources and builds ground-breaking products that are user-friendly, made from high-grade materials for durability. They use a direct business-client model.

Go Power vs. Victron

Are you wondering which to pick in this battle Go Power vs. Victron? We know how hard it is on you but do not worry because we did it on your behalf. But first things first, what is Victron?

Victron Energy B.V. is a manufacturer of power conversion equipment that was founded in 1975. Based in the Netherlands, the company boasts a worldwide reputation for making reliable off-grid inverters or chargers and a variety of quality, reasonably priced solar controllers.

So, how does Victron compare to Go Power?

Like Go Power! Victron is also devoted into offering solutions for the market dealing with automotive or boating, or RV products. Actually, it is the company’s strong suit to craft quality micro-power systems. It might be a competitive market but Victron holds up just fine.

Victron Energy offers a giant range of solar products, with everything from small solar controllers to big 15kVA grid-interactive chargers and inverters. If you want high-quality accessories to build simple battery monitors, remote AC, or DC-attached off-grid power systems, Victron has that too.

Other than those mentioned above, Victron is a main producer of grid-interactive inverters or chargers, both PWM & MPPT solar charge controllers, battery (Li-Ion & Lead Acid) balancers & accessories. The company is always upgrading its products and software with elegant new features.

Victron Pros:

  • High-quality products
  • Easy installation
  • Variety of products
  • Continuous upgrading

Victron cons:

  • Focus on automotive industry
  • Limited product warranty (5 years) compared to others on the list.

Our Verdict

Go Power! is a vendor of reliable inverters, solar kits, chargers, and batteries and uses the dealership network business model. Besides, they have a reputation for building trusted products. If you want to purchase online via authorized dealers, it is the best choice.

Victron Energy, on the other hand, is much like Go Power! with special focus on making high-quality micro-power systems. Their products are off-the-charts and always want to interact with their clients during purchase.


Solar panels are a reliable, cost-effective power source for both on-grid and off-grid applications. When it comes to maintenance, it’s easy! Just keep them clean and consider regular inspection to keep them useful.

If you are considering going off-grid for voyages such as camping, hiking, rock climbing, mountaineering, and more, solar panels are a fantastic choice. They will power your ideas wherever you go as long as the sun is smiling at you.

I would recommend Zamp Solar kits for people who own campers or RVs. Why? Nothing comes close to them in terms of innovation and plug-n-play expediency. In fact, some RVs come with pre-installed ports that are compatible with Zamp Solar kits.

If you are in the hunt for more solutions, go with Renogy! This company makes solar kits that are precisely designed for everything you want to do (both low- and high-draw solar needs). Besides, we have seen the level of their inventiveness.

BougeRV 180 Watts Solar Panel Review

BougeRV 180 Watts Solar Panel Review

BougeRV is a renewable energy brand and a high-grade RV products promoter. They have a long-term ambition to offer energy solutions for sustainable outdoor or off-grid activities. BougeRV believes that limitless energy equals limitless life.

[content-egg module=Amazon products=”us-B07MN1QS7L” hide=title disable_features=1]

The company utilizes monocrystalline solar modules with very high conversion efficiency to make sure that every unit area generates maximum power output.

About BougeRV 180 Watts 12 Volts Solar Panel

If you are just getting started with solar panels, then this 180-watts 12 volts solar panel from BougeRV is an ideal choice. Perfect for both on-grid and off-grid applications, this solar panel comes in a beautiful design and offers a 21% high conversion rate for enhanced performance.

The junction box in this solar panel is IP65 waterproof rated and comes equipped with bypass diodes that minimize power drop in shades. You will also find a pair of pre-attached 3-feet cables. To ensure you have an easy installation process, the panels come with pre-drilled holes at the back that allow you to mount and secure it quickly.

Durability is one of the things that matter most in a solar panel. The 180-watts 12 volts solar panel from BougeRV is built to last using corrosion-resistant aluminum material. As such, it can withstand the varying off-grid weather while extending its life in the process. Its robust panels can endure snow loads and high wind.

The solar panel features multiple layers of protective system and also comes with anti-reflective, high transparency glass that is reinforced to resist impact. It is also waterproof to make it work competently in a dense environment and weighs 32.6 lbs. 

When it comes to versatility, BougeRV is not left behind. This 180-watts 12v solar panel is compatible with both on- and off-grid inverters for the best experience. It is a user-friendly solar panel that can be used to power your home in case of sudden power outages. Do you have an RV, boat, campervan, or any other outdoor equipment? BougeRV has what you need!

The BougeRV 180-watts 12 volts monocrystalline solar panel is backed by a 25-year warranty plus lifetime client support in case you have issues with your solar panel. The package also includes IP65 rated waterproof MC4 connectors.


Nothing speaks a lot about a product other than its features. In fact, you can use them to weigh the value of money. So, what does this 180-watts 12 volts solar panel from BougeRV offer?

  • Durability – Made to last with a corrosion-resistant aluminum frame, impact-resistant anti-reflective high transparency glass, and can endure snow loads and harsh winds.
  • Multipurpose – It is compatible with both one- and off-grid inverters for indoor use during unexpected power outages and outdoor experiences. You can mount it on your RV, boat, trailer, motorhome, and more.
  • Waterproof – Comes with an IP65 junction box that separates environmental particles plus low-pressure water jets.
  • High-Efficiency – Includes several layers of protective systems with solar energy chips to maintain an efficient conversion rate. It is also equipped with bypass diodes to support steady power in low-light environments.
  • Warranty – BougeRV guarantees a 25-year warranty backed up by lifetime client support.


What does the 180-watts 12 volts solar panel from BougeRV offer in terms of specs?

  • Power at STC (Pm): 180-watts
  • Maximum Power Voltage: 18V
  • Maximum Power Current: 10A
  • Open Circuit Voltage: 21.6V
  • Short Circuit Current: 10.5A
  • Maximum System Voltage: 1000V DC
  • Junction Box IP Rating: IP65
  • Series Fuse Rating: 15A

How to set it up

Before you even start to set your BougeRV 180-watts 12 volts solar panel, always remember to keep your panels away from sunlight. That is a safety precaution you should not overlook.

  1. Matching the terminals, connect the battery to the charge controller
  2. Connect your BougeRV solar panel to the charge controller
  3. Hook the inverter up with your battery and there you harness the power of the sun.

WARNING: Make sure you connect your solar panel to the charge controller properly to prevent short circuit or reverse polarity which can damage the panels and charger controller. 


  • Economically priced
  • Waterproof
  • Durable & portable
  • Versatile
  • Bypass diodes
  • 21% high conversion efficient
  • User-friendly
  • Pre-drilled holes


  • Limited one year warranty
  • Mounting brackets bought separately

Rating on Value for Money

You can get your BougeRV 180-watts 12v solar panel at $189.99 from BougeRV official site. This solar panel is waterproof, offers a high conversion rate of 21%, IP65 junction box & MC4 connectors, among other features.

It might not be everything you wanted, but I found it worth the dollars and that is why it scored an 8/10 rating on the value for money.

Rating on Charge Interruption Recovery

On a cloudy day, my BougeRV 180-watts solar panel’s charging amperage was 4.5A and 18.26A on a sunny day with the correct tilt towards the sun. Of course, you do not expect the charging to be the same, but a solar panel’s recovery effect matters most during purchase.

This solar panel comes with bypass diodes so it took 10 seconds to recover charge. In that case, we gave it an 8/10 rating on charging interruption recovery.

Rating on Charging Speed

The charging speed of a solar panel depends on many factors, including temperatures, angle, sun availability, and more! When lying flat on the ground, the solar panels recorded 14.27A compared to 4.5A on a cloudy day and 18.26A when perfected tilted to the sun.

That is why the solar panel scored an 8/10 rating on charging speed.

Rating on Multiple Device Charging Speed

While most solar panels on the market come equipped with USB output ports, this one does not. However, it is compatible with most power stations out there which you can connect with and charge your devices.

Rating on Durability

When it comes to durability, there is no compromise! The panels are made from corrosion-resistant aluminum material for extended outdoor use. It also tolerates furious wind and snow heaps excellently, in addition to having waterproof panels and junction boxes.

Anything else you look for in durability? Well, it recorded a 9/10 rating on durability.

Rating on Weight and Portability

The solar panel is large but only weighs 24 lbs. and is usable in any off-grid equipment which makes it highly portable. There are other lightweight and foldable solar panels out there, but you can never go wrong with BougeRV. It scored a 9/10 rating on weight and portability.


The BougeRV 180-watts 12 volts solar panel is a great addition to your outdoor gear or even for starting off. It is reasonably priced and comes with many handy features that make your off-grid experience awesome. If you are looking for a blend of cost and quality, you got it.

[content-egg module=Amazon products=”us-B07MN1QS7L” hide=title disable_features=1]

PAXCESS RV Solar Panel, 120W 18V Review

PAXCESS RV Solar Panel, 120W 18V Review

(Portable Folding Solar Panel with USB QC 3.0)

PAXCESS was established in 2015 as a gardening company until recently they joined the solar panels market. They might be newbies in the solar panels arena, but the company is doing really well and we shall review one of its products today.

[content-egg module=Amazon products=”us-B086M9J94W” hide=title disable_features=1]

So, are you wondering what a gardening firm knows about tech and solar energy? I was too, at first. Just follow my lead and you will understand.

About PAXCESS RV Solar Panel, 120W 18V

This 120W 18V portable solar panel from PAXCESS is an upgraded version that comes with more power for your RV. It boasts a high energy conversion rate of up to 23% to allow you tap most of the sunlight and convert it into clean solar energy that you use in your off-grid activities. You can also use it on-grid as backup in case of sudden power outages.

PAXCESS understands the need for tilting your solar panels in the direction which they tap most sunlight in the day. As such, the 120W 18V portable solar panel comes with a kickstand that allows you to reposition from flat lying position to the most suitable angle.

When enjoying that vacation or weekend off-grid, you need to connect with the world via social media and share experiences. To make sure your devices never run out of power, these solar panels come equipped with two types of USB output ports: USB QC 3.0 and USB-C. Both offer 2x charging speed for devices such as laptops, lamps, smartphones, MacBook Pro, and more.

The PAXCESS 120W solar panel weighs 11.62 lbs. which makes it very lightweight and is designed with portability in mind. It is foldable, right? Yes, and it also comes with a packing bag that you can store in or pack when travelling for maximum portability.

In terms of compatibility, I found this 120W portable, foldable solar panel from PAXCESS to be excellent. Why? That is because it can work well with most solar generators that you will find out there on the market.

This solar panel is also very versatile! Other than RVs, it is compatible with trailers, boats, campsites, and even campervans. The best thing about it is that it is very quiet so you can concentrate when reading your novel or doing your assignments.

For durability, this solar panel is made from high-grade Oxford cloth, zipper, and PET material that is resistant to high temperatures. It is also waterproof and comes with an in-built TIR-C controller for reliable and safe current which also prevents reverse charging.


One thing that speaks a lot about a product is its features. Just by looking at them, you can tell where it was the value for money or not. So, what does this 120W solar panel have in store?

  • Durability – Features high-grade Oxford cloth, zipper, and PET material for resistance from high temperatures. It is also waterproof.
  • Warranty – Comes with a 24-months product warranty.
  • Hi-Tech Charging – Equipped with two USB charging ports (QC 3.0 & Type C) which offer super-fast charging speeds.
  • Compatibility – This solar panel works well with the most generators available on the market. 


These are the specs of the PAXCESS 120W portable foldable solar panel:

  • Peak Power: 120W
  • Open Circuit Voltage: 18V
  • Short Circuit Current: 6.6A
  • Cell Efficiency: 23%
  • USB Output Ports: QC 3.0 24w (max), Type C 18W (max)
  • Weight: 11.62 lbs.

How to set it up

Before you set it up, here is a safety precaution: do not set up your PAXCESS Rockman 120W solar panel, make sure the panels are not under the sun. If you have done that, you can go ahead and set up your solar panel.

  1. Hook up the battery to the charge controller
  2. Connect the charge controller and your solar panel
  3. Connect your battery to your inverter and let there be solar power!


  • Portable & foldable
  • Waterproof
  • Durable built
  • Affordable
  • Easy to install
  • Rubber has TPE material


  • No bypass diode

Rating on Value for Money

We all value our hard-earned money and cannot just invest it in any asset. I think of a portable solar panel as an investment. The Rockman 180W 18V foldable solar panel costs $199.99 on PAXCESS.

This price tag is reasonable given the abilities it comes with, from high efficient charging to compatibility, upgrade charging tech, and more. It scores 9/10 rating on value for money.

Rating on Charge Interruption Recovery

During off-grid voyages, it is likely that you will find yourself in the thickets where there is low sunlight or in areas with shades here and then. That interrupts the charging cycle but it depends on how long the obstacles are.

That is where charge interruption recovery comes in. Unfortunately, PAXCESS 120W foldable charger does not include bypass diodes to reduce power drop. It worked well, but the feature could be a saving grace if included. It scored 6/10 rating on charge interruption recovery.

Rating on Charging Speed

Solar charge speed varies and heavily depends on several factors, including solar panels angle of elevation, the sun’s position, and temperature. The best thing with the Rockman 120W foldable solar panel is that it comes with 1 quick charge (QC) USB 3.0 and 1 USB-C which have 2x charging speed.

It charged my iPhone 11 Pro in 30 minutes from 0 to 50%, thus scoring a 9/10 rating on charging speed.

Rating on Multiple Device Charging

This solar panel has the ability to charge two devices at the same time using the USB-C output port and the QC USB 3.0. At the mention of QC (quick charge) port, you know what that means, right?

Anyway, I was able to charge my iPhone 11 Pro and a friend’s simultaneously and they charged 50% and 48%, respectively. We gave it a 9/10 rating on multiple devices.

Rating on Durability

The PAXCESS 100W foldable solar panel is built to last with high-quality Oxford cloth, PET material which is high-temperature resistant, and zipper. That is robust, right? I know! The handle features TPE rubber material plus in-built TIR-C controller to prevent reverse charging.

That and being waterproof gave the solar panel an impressive 9/10 rating on durability score.

Rating on Weight and Portability

This foldable solar panel weighs just 11.2 lbs. which makes it lightweight and can be folded and carried like a briefcase for portability. As such, it attained a 9/10 rating on weight and portability score.


If you are looking to harness the power of solar energy to your RV, I would recommend the PAXCESS 120W 18V portable foldable solar panel. It offers an incredible solution to your off-grid power needs with assurance for durability, comfort, and safety.

SUNAPEX 10W Portable Solar Panel Review

SUNAPEX 10W Portable Solar Panel Review

It is natural for car batteries to discharge, right? After all, in-built car systems such as anti-theft applications and alarm systems are always utilizing battery power. 

SUNAPEX is a highly regarded company in the portable solar arena that focuses on satisfactory customer experience by offering car battery charger and maintenance solutions. To avoid battery failure resulting from vulcanization, the firm built a trickle charger for slow charging and maintaining your car battery power.

About SUNAPEX 10W 12V Portable Solar Battery Charger & Maintainer

This 10W 12v solar battery charger & maintainer from SUNAPEX is a lightweight and portable device that comes with 22% conversion rate crystalline silicon material. It also includes 95% high conduction ETFE material that enhances the charging efficiency.

The best thing with this battery charger is that it comes with an upgraded charging system to boost the battery charging speed by 10% to 20%. It’s in-built intelligent controller charges in day and automatically switches off at night to preserve battery power. As such, it secures the battery from overcharging, over-discharging, reverse polarity, and short circuit.

To help you monitor the working status of the solar battery charger & maintainer easily, the junction box comes with 3-color LED indicators. If you see solid-blue light, it means it is getting sunlight with normal output, solid-red light for charging, and solid-green light for battery fully-charged. What if I see no lights? It means a short circuit has occurred.

The sturdiness and durability of this handy solar battery charger & maintainer is incredible! SUNAPEX added a layer of PCB on the panels that help minimize internal damage, while cutting the conversion rate in the process.

For extended durability and service life, the solar battery charger & maintainer is made with ETFE material that is both heat-resistant and waterproof. It also features upgraded and hardened wires for enhanced resilience.

[content-egg module=Amazon products=”us-B08CH442WK” hide=title disable_features=1]

Did I mention how lightweight this device is? You will feel like you are carrying your smartphone making it easily portable. For effectiveness when using it on your RV, car, or boat, the package also includes a 3-piece plug-n-play SAE cable used in 12 volts batteries and DC charging gadgets alike.


Customers, like you and me, rank any products using the features they offer. These features make the SUNAPEX 10W 12V portable solar battery charger & maintainer incredible.

  • Durability – It is made from ETFE material that protects your solar panels from heat and water, and has PCB on the panels as bottom plate. The wires are also reinforced.
  • LED Indicators – Includes three-color (solid blue, red, & green) LED indicators that helps you monitor the functionality of the battery charger. The best thing is that it is also easy to detect short circuit possibilities if there is no light on the indicator.
  • Smart Controller – Comes with an upgraded battery charging algorithm that boosts charging efficiency while protecting your battery from charging-related risks like short circuit.
  • High Conversion Rate – Panels feature a honeycomb structure with high conduction crystalline silicon material that improves charging efficiency. It lifts power production up to 22%.


What do the solar panel charger and maintainer offer at a glance?

  • Max. Power: 10W
  • Voltage: 12V
  • Max. Power Voltage: 18V
  • Current at Pmax: 0.56A
  • Weight: 1.43 lbs.

How to set it up

You have the 10W 12V portable solar battery charger & maintainer and want to know how to set it up? Well, it is easy! SAFETY RULE: keep your solar panel away from sunlight!!

  1. Connect the solar panel to the junction box.
  2. Connect the plug to the cigarette lighter in your car


  • Industrial-grade STMs charging controller
  • Visual surveillance
  • Durable and portable design
  • Portable & waterproof
  • Highly compatible
  • 22% high conversion rate
  • 12 months warranty
  • Lifetime tech support

Rating on Value for Money

Getting the value for money on a product you purchased is one step towards satisfaction. I bought the SUNAPEX 10w 12v portable solar battery charger & maintainer and it is functioning pretty well. 

This panel offers 22% conversion rate which enhances the charging performance for reliability. To me the $34.99 is a worthy investment and I give the product 9/10 rating on value for money.

Rating on Charge Interruption Recovery

The recovery effect is yet another crucial factor to consider when buying a solar battery charger & maintainer. The 10-watt 12v from SUNAPEX comes with integrated smart controller, an upgraded charging algorithm that increases charging efficiency.

The best thing with this feature is that it activates automatically during the day and switch off in the night to reserve charge. It also protects the battery from interruption-related risks. It recorded 8.5/10 rating on charge interruption recovery.

Rating on Charging Speed

The SUNAPEX 10-watt 12v solar battery charger & maintainer is built to prevent the battery storage capacity from deteriorating. This 10-watt trickle solar charger charges slowly to maintain the battery’s power.

Charging effectiveness depends on the condition of the batter. If fully-exhausted, then you will always be complaining. My car has a good battery so it recorded an 8/10 rating on charging speed.

Rating on Multiple Device Charging

This solar battery charger is built to only charge one device at a time, so it cannot be rated on the multiple devices charging category.

Rating on Durability

SUNAPEX solar battery charger & maintainer is built to last with an extra layer of PCB material for robustness and reducing internal panel damage. The ETFE material makes it more durable as it is waterproof and heat-resistant, plus hardened wire.

This product obtained 9/10 rating on durability.

Rating on Weight and Portability

It is lightweight (1.43 lbs.) just like your smartphone and comes with a compact design that is easily portable. It is the lightest portable solar battery you will find on the market, and scored 9/10 rating on weight and portability.


If you want a reliable solution for charging and maintaining your battery to avoid over-discharging or draining, you can never go wrong with the SUNAPEX 10-watt 12v brand. It achieves the most ideal charging effect in a limited space due to its compact size.

Add the warranty and lifetime technical support to the functionality…Awesome!