The Tesla device (not a coil) >>3187046 lb is interesting.
But his claim that 500 g**damn volts can power a house is not exactly correct. How much current can the device supply?
Power = volts x amps
Not just volts
Is it an electret? I'd like him to leave a resistance hooked up for a long time and find out if it really is a Zn-Cu battery as some claimed, or if it can keep up the performance over time.
I have some LEDs and sheet copper stuff but no zinc. If I can find some zinc I may give it a try.