solar charge controller works well. I've used it with (2) 100 watt HQST panels in parallel and it seems to be putting out around 130 watts in early March. I think on a sunny day without fog it will probably be a bit more. In the photos here it is connected to one (1) 100 watt HQST panel and puts out around 70 watts. I like the fact that it comes with ring connectors to plug in. It was a nice touch. The device is quite light and not very thick. The LCD works well and is easy to prepare. My only comment is that I'd like to keep it on the amp's display screen, but it reverts to the default screen after a few seconds. If there was a PWM charge controller on the market I would buy it again.