I bought this along with a 300w Allpowers solar generator. I was happy to see that it came with all the necessary connections and thought it would be a good system. However, despite numerous troubleshooting attempts and repositioning methods, I can only get 55 watts of peak power in bright sunshine with clear skies and 81 degrees. As I covered one side, the input dropped to 34, then 33 for the other side. However, when working together, I only get 55 watts of input power. I emailed Allpowers in mid-July and after 2 weeks they still have not responded.