It's a personal vaporizer mechanical mod. Essentially two 18650 batteries in parallel firing into a resistor through solid copper wire. I had an OTTO P9 button in it, but exceeded the current limit and fried the button. The system runs on 4.2 volts maximum, but is running up to 60A of current. I am having trouble finding a button rated for that amount of current and was wondering if the current rating ascends and voltage descends as I think, and how they correlate