I'm just running 1 group 27 battery, I don't have TV, Radio and don't plan on it, just lights, water pump and a 12v DVD player. I'm installing 200W panels so if things change I'm ok and can even add down the road. I want to do a clean job so right now I'm looking on where to run wires. My other question is, due to limited space how close to the battery does the controller have to be, I know closer the better but I have very limited space to be able to mount the controller where it can be read. Where I'm looking to mount it is about 10ft of wire.Yes I'm a nubie to solar, all I do is boondock,no hk ups for this jose. This is a 8'6" Lance truck camper.