Well, it depends how much light you need. If you just want a tiny amount of light so you don't trip over things when you go out to check on your chickens in the middle of the night (or to coax the girls in as a previous poster mentioned), you can buy pretty good lights for under $30 (but there...
If you want something that's close to the brightness of an old-style 60W incandescent bulb, you might want to check out Yeti Solar lighting kits. Our LightPassage is about half as bright as that (and is usually enough for small to medium sized coops); our LightPortal is about twice as bright as...
Color temperature is pretty much independent of the size of the light. Perhaps you are thinking of lumens?
Lumens are a measure of how much visible light is produced, weighted for the sensitivity of the human eye (we see green best). Chickens/quail probably don't have quite the same...
I'm not trying to tell specific people what to do. I was just giving general advice WRT a small solar lighting system, as you were dc (by the way, even a 3 or 4 watt LED 12V light can provide enough light for a coop if you get a good efficient one). If you have a 40 or 45 watt panel laying...
As a tinkerer gone pro, I can definitely sympathize! As with pretty much all things, you will generally save money if you make a solar light yourself from scratch (assuming you use comperably sized parts and get good deals on them; shipping can be killer when you need a lot of bits and pieces)...
If you want to run other appliances, getting a big battery, a big panel, and an inverter makes a lot of sense. If you just want some light, might I suggest a solar lighting kit? Cheaper, easier, and simpler. If you want more details, check out this article...
Hi, this is Rustom Meyer (the author of the article at the beginning of this thread). Firstly, I should say sorry; I didn't realize this article was going to be posted in thread form, and that there would be comments. Mind you, I'm not at all unhappy about that, I just didn't check back until...