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Marietta Preppers Networking Group Message Board › My Semi-Portable Home-Brew Solar Electric Power System

My Semi-Portable Home-Brew Solar Electric Power System

A former member
Post #: 5
I've thrown together a web page showing mySemi-Portable Home-Brew Solar Electric Power System. Go to http://www.sciencedem...­
A former member
Post #: 1
Hey David, I like this idea for portable solar power. Approx how much was it for this particular set up that you used? Thanks Jessica
A former member
Post #: 15
Hey David, I like this idea for portable solar power. Approx how much was it for this particular set up that you used? Thanks Jessica

Hi Jessica - The panel itself was purchased on eBay from a solar panel distributer in Miami called Sun Electronics (http://www.sunelec.co...­. They have panels for just over a dollar per watt such as this 50 Watt panel: http://www.sunelec.co...­. My panel is 130W which makes it much heavier and less portable than the 50 Watt panel so if you want portability and you only have limited space in your vehicle to carry a solar panel go for the smaller 50 Watt panel. You can read the info I have on my web page at http://www.sciencedem...­ for other items you'll need. However, if you don't plan on using 120 VAC lights, fans, or whatever you can save some money on the system by buying 12 Volt lights, fans, etc. from camping supply stores or Amazon. This will save you some money since you won't need an inverter to convert the 12V battery into 120VAC power. I recomment a marine or deep discharge lead acid battery - not a car battery since car batteries are not designed to be drained down very far which will damage them.

Here is a cheap 12 Volt LED light you could buy from Amazon: http://www.amazon.com...­ It only draws 5 Watts of power. In terms of how long the battery would last based on a conservative average of 4 hours of sunlight per day at 50 Watts from the panel that would give you 4 x 50 or 200 Watt hours of power in the battery per day. 200 Watt hours divided by 5 Watts for the bulb equals 40 hours of light! That means you have power to spare if you wanted to run a radio and maybe a small 12 Volt fan - or more lights.


You can write me directly at davidmassey1975@gmail.com for more info.
A former member
Post #: 5

David - you definitely know more than I do about these home-made solar generators...Hats off to you!!! I tried this myself and gave up because I didn't want to go through all the math/electricity/intricate set-up steps to properly hook up the battery guard to prevent the battery from being drained too low or being over charged.

I DID find a manufactured system online (Goal Zero - so I wouldn't have to muddle through electricity, math, and take a chance of blowing myself up) and I looked at: http://www.goalzero.c...­ - These systems look great (they use deep cell marine batteries...all enclosed and hooked up internally to inverter and set up with battery guards to ensure hundreds of successful cycles...even guaranteed) but my husband who sells solar panels said they are using a low grade/low wattage panel and they are not scalable systems...Also, the power output (even for the largest systems) are still not as much...

Tom informed me there are many 'grades' of solar panels out there and Mage (located here in GA) makes one of the best panels for quality and wattage vs. price. So I am giving up my dream of a solar panel generator until Mage (or equivalent) comes through with an at-home all-in-one generator that can give you the kind of wattage that a gas-powered generator can give you. I know that the most efficient use of solar panels is to simply have an electrician hook them up in our house and connect through the grid but we rent our house (for mobility and flexibility). For now, we have a mega-powered gasoline generator with a rotating storage supply of gasoline...While I'm not interested in the home-grown variety of solar generators since I don't trust myself... due to dangers, complexity, etc. , if anyone knows any other store-bought/manufactured solar generators, I'd love to hear from you :)
A former member
Post #: 6
David, this is awesome. Thanks for sharing.

Wanda, it would take a lot of solar panels to equal a gas generator, but the system you describe, along with how to connect, is here: http://www.wholesales...­


A former member
Post #: 6
Very cool! Thanks Richard!
A former member
Post #: 2
You can write me directly at davidmassey1975@gmail.com for more info.

Thanks so much David! I just emailed you :)
A former member
Post #: 21
Check out Battery1234.com
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