I bought the two 100w panel but have not added them so still working with total of 200w panels. I also got the Renogy Li 40amp cc but have not installed it because I need to buy batteries. Right now I have one battery 125ah AGM and I've had it for a little over 3 years now so the battery doesn't hold as much. I think all I need are the new Xuba batteries and I can finally install everything. Im thinking about getting 3 because it's a better deal. Just wanted to know if the price is a good deal. I don't want to build my own battery and rather stick to the encased battery I'm a nooB