A viewer is curious about the exact efficiency of the uMPPT and so am I. So I bought another portapow and measured the energy going in the uMPPT and going out of the uMPPT to determine the efficiency. I measured for over 4 minutes to have an accurate number. It turns out to be 96%, this is at an average power of 1,71Wh=6156Ws/4m29=269s=23W
