Hi Everybody, I'm sure this has been addressed multiple times before but I am going to build a small 12 volt system from which I can power a ventilation fan, LED lights and perhaps some small electronic devices. My plan is to start out with a couple of good batteries that I can keep charged that will provide energy for a short time if needed. In the future, I want to add a charge controller and solar panels. This will be located in my home but I don't want it tied to the electricity grid in any way. Does anyone have a good book or website to recommend for someone wanting to do a small scale 12 volt system like this? Any advice would be greatly appreciated. Thank you.