about 12 hours ago - No comments
Question by : Is there anyone in California who wants solar energy and doesnt know where to get it? Hi i have a lot of questions in regards to solar energy, and im really interested in it for the sake of California. Is there anyone who feels the same way i do? please include your
about 1 day ago - 3 comments
Question by : how large must a solar panel be to power a train? If the schematics of a solar train were drawn, what would they look like? Would the train be large or small? Where would the panels be placed? And if so, how large must the panels be to fit the roof? Even
about 3 days ago - No comments
Question by Ashley J: How much solar energy (kJ) would have to be…? How much solar energy (kJ) would have to be transferred to a 145.0 foot length of asphalt highway that is 49.0 feet wide and 25.0 centimeters deep in order to raise the temperature 5.00 oC ?The average density of asphalt is 721
about 4 days ago - 2 comments
Question by : How do I make my own solar panel? How do I make my own solar panels and generate my own power cheaply. The commercial one’s are just too expensive. —————————————— Answer by mugikuyuIts very easy but the entire process is quite lengthy. You will need to purchase some materials and then assemble
about 5 days ago - 2 comments
Question by elrodvoss: What Solar Panel Efficiency would replace Coal? A friend sent me an article that a company called Fraunhofer has produced solar panels that can achieve 41.1% efficiency. Now taking into account the fact that solar do sent work during storms or night and greatly reduced during winters, what % do you think
about 6 days ago - No comments
Question by Jake P: Are there any Universities that have programs about solar energy? I wanted to know if there are any Universities in North America that have programs that teach about solar energy and using it for electricity in a home (mainly installation). —————————————— Answer by Dr. Clandestine:)Many dude, they have a nice supply
about 1 week ago - 1 comment
Question by GorgeousLilThing: I want to conserve energy, Is there anyone out there who knows how to make solar panel the simple way? What are the key materials needed to create a solar panel and the simple steps to assemble it. What would be the desirable size of the panel enough to run a desk
about 1 week ago - 1 comment
Question by : why not people use solar energy for their daily need? I am observing that normally we need electricity for lighting purpose then why not people use solar energy for lighting in each room. —————————————— Answer by DifdiMost people are not millionaires. Solar energy systems equal to what you can get via normal
about 1 week ago - 2 comments
Question by : What is an issue or something interesting about the solar panel technology? I’m hoping to do a science fair project on solar panels. Since energy has been a large issue lately, I was hoping to research on this topic! What are some things that I can possibly do or experiment on? Thank
about 1 week ago - No comments
Question by jayB: Are there any grants for converting homes and or swimming pools to solar energy? my pool is heated by gas.I can’t afford to heat the pool with the price of gas. also I would like convert the houses to solar energy. I need to become absolutely energy efficient with solar energy with
about 2 years ago
I wanted to like this product as I love helping any endeavor that decides to sell solar products. I’ve been trying to see where it’s made, no where on the unit itself or the literature does it say. I’m curious because it seems like it’s put together by some guy in his garage from off the shelf parts. Except for a few design weaknesses (it doesn’t close well and can dangerously pinch the power cable if one isn’t extremely careful), it does generate decent power.
If this, however, is made in some big factory in China -there are much better products available for the money (the Brunton 26 watt is an excellent unit).
Rating: 3 / 5
about 2 years ago
Not a bad panel. It has Siemens mono-crystalline cells(36)and tough glass. Case is plastic but fairly solid. Solar cells are mounted in EVA under glass. Accessory connectors are VERY well thought out with a charge controller, auto plugs, battery connectors, and a voltage step-down set-up for lower voltage appliances. Props are a not well-designed but I generally don’t use them anyway- this panel easily props up against just about anything and doesn’t slide. A little heavy at 9lb but solid construction. The 30 watt output will charge up just about any smaller appliance like a lap-top or AA charger- will also charge up a car battery with a good sunny day.
The review above is misguided in recommending the Coleman over this panel. The Coleman has cheaper amorphous cells with only a fraction of the power output- not able to charge a laptop and is also made in China. Reviewer doesn’t seem to have seen the 30 watt panel before commenting.
Rating: 4 / 5
about 2 years ago
Unfortunately, for the price you pay this product is a horrific waste of money. Made In China is the theme here and it shows throughout. Save your $$ and look at the Coleman CL1300 12 volt 20 watt Battery Solar Panel Charger which far surpasses this is value and quality. Trust me don’t spend your money on this!
Rating: 1 / 5
about 2 years ago
Following considerable research I purchased this panel about six months ago. I use it extensively in field research to power my laptop and radio data communications equipment (re-rad system) as well as run a 12V powered AA battery charger for LED lighting. With most of my field work in Nevada, Utah, and Arizona, where we get intense sun insolation, this panel has performed very much to my needs and expectations. My panel delivers output to rated specifications.
In operation, I run all of my equipment off of a Optima yellow top deep cycle battery. My laptop and data radio draw more than what this panel can deliver but since I run my laptop and radio only about 25% of the time, the panel keeps up nicely with my overall power demands. Recently I used the panel for a week at the Grand Canyon. I was impressed that it maintained my battery charge levels adequate to run my equipment even during a few lightly overcast days.
Regarding durability, I recently dropped the panel (while it was opened up) glass side down. Much to my relief, the panel survived the drop with no visible or electrical damage. As the previous commenter stated, the stands appear a little light weight but in use, they seem to be holding up well.
I give this 30W panel an excellent rating – it meets my needs quite well.
Rating: 5 / 5
about 2 years ago
I was a bit skeptical about these panels when I originally tested it, but in the end it performed excellent. I use it to charge my Duracell power pack 600hd and it charged fully in 4 to 5 hours. I noticed that you don’t need full sunlight for this panel to work but the more sunlight the higher output of course. Don’t plan on using this panel to power AC electronics its not designed for that. My inverter only powered up to about 15 watts ac power or one 13Watt CFL bulb. It also is good for charging cell phones or anything under 15 watts. On the negitive side I have not tried this product in wet weather and I don’t think that I will as it’s not water sealed very well, and I’ve noticed so far the stands that prop up the panel aren’t very robust and would not hold up in much wind.
Rating: 4 / 5