What’s interesting to me is that it loses 4% efficiency when bent. Like, I get why there’s some loss because of parasitic capacitance/inductance etc but 4% seems like… not very much?
I guess it helps a lot that it’s running at 60kHz. https://en.wikipedia.org/wiki/Parasitic_capacitance#Effects: “At low frequencies parasitic capacitance can usually be ignored, but in high frequency circuits it can be a major problem.”