|Topic Review (Newest First)|
|01-30-2010 12:32 PM|
Somebody wrote instructions for constructing a panel here - LINK
One place that seems to sell the solar cells by the box - LINK
One place that seems to sell them individually - LINK
Probably get them on Ebay too, buyer beware.
|01-30-2010 11:56 AM|
|LandLocked66c||Well you've got me curious! What is a good site to buy panels from?|
|01-30-2010 10:31 AM|
I make solar cells and solar panels for a living. I highly suggest making your own panel as others have stated it allows you alot of flexibilty in shape. Things to keep in mind:
1) Generally each cell will produce about 0.5VDC no matter the size
2) Amperage comes from the area of the cells
3) The cooler the cells the more efficient. They do get hot at peak power
4) Make sure the substrate the cells are mounted to is very rigid. Multi-crystaline cells do not like flexing too much. The thinner the cell the more flexible they are.
5) In a well made panel with minimal flexure the main point of failure are your electrical connections.
6) Not all cells are created equally. Multi-crystaline cells vary from 12% to 19% and higher. It depends on the processes used to make the cells, the grade of silicon used, and the quality/size of the collection lines.
Good luck and post pics!
|01-29-2010 11:44 PM|
I like the idea of making panels because you can make them to fit unusual spaces, which is perfect on a boat. How many porthole shaped panels have you seen lately ?
|01-29-2010 11:19 PM|
Originally Posted by sailingdog View Post
Well, I have two of the small solar panels pictured on the first page, and the larger one that VW made for the Touregs that keep both their batteries up. It litterally is twice the output of the smaller. I'm going to dig up the specs on those soon.
|01-29-2010 11:17 PM|
Originally Posted by wind_magic View Post
|01-29-2010 08:30 PM|
|sailingdog||I'd highly recommend you read the Primer on solar power on boats that I wrote on my blog. You can find it HERE.|
|01-29-2010 05:35 PM|
Originally Posted by mitiempo View Post
and stereo for an hour or two here or there.
|01-29-2010 05:03 PM|
If you want to start getting creative you can check into just buying solar cells and wire them up yourself, not hard to do and a lot less expensive than purchasing panels. Buy 'em by the case ...
|01-29-2010 04:49 PM|
I need to research this more, but is it possible to run multiple panels in series to increase output? I know that most panels are just a bunch of cells run in series to give more output. Bigger panel means bigger output. If I end up with enough of these I may sacrafice a few for research!
If anything, my main goal would be to make sure my bank doesn't get 50% discharged at any given time. I don't know what my average weekend of use will consist of yet - hell I don't even have the boat in the driveway yet...
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