Thanks for the pointers. Seeing 12V on the dot across the ZVS module (two decimal places!) so getting around 30W. (Edit: I just realized I forgot to put under load when testing 🤦♀️actually looking at 11.67V, which definitely still good.) I've got an M'21. I can live with a weak cap, I just...
My work in progress induction heater:
Electronics are outside the box for now until I get around to placing a Digikey order for panel mount buttons and switches. Put together a little RC circuit which is connected to the gate of the MOSFET so I don't have to hold the button the whole time :p...