Quote Originally Posted by the image reaper
... would be powered by solar-panel recharged deep-cycle batteries ...
This is what is not possible nor practical. Do you have any idea how much solar panels cost, and how many you would need for this? Thousands, and thousands, and thousands of dollars worth. No, you cannot use a car headlight to grow marijuana. They are halogen, and you'd need thousands of watts to grow anything useful, and the heat would be MASSIVE. It would also not be possible to run this much from batteries. If this was possible everybody would be growing their weed in an old trailer out in the woods. They aren't.