LCAP Free Energy

[TinselKoala]

Try shorting the electrolytic capacitor.

Of course I did try that!

[John.K1]

Tecnicaly Brovin's Kacher- sending high voltage peeks from the collector to the secondary battery?  I was thinking about it and redraw the sketch with different place for the cap . I am not gonna show it here yet as you would laugh to me. I will test it tomorrow first I do not thing it much matter on the type of coil to be honest.

[TinselKoala]

OK, here is some more data. My build needs slightly  more than 1.5V in the primary supply, apparently. With 1.685 Vin, I can get it to oscillate by shorting then _removing_ the short from the capacitor. Then it oscillates for five or six seconds and then goes out. If I get it oscillating and _then_ short the capacitor, then it stays working until the short is removed, then goes out in five or six seconds. Simply shorting the cap does nothing, the short has to be removed to start the oscs, then the cap can be shorted again during oscs and will make them continue.

This is without the secondary battery connected. When I connect this second battery the oscillations die (capacitor shorted), but sometimes resume when the second battery is disconnected. Without this second battery there are great spikes there on its connection points, up to 60 V peaks, at a frequency of about 50 kHz.
Unshorting the capacitor causes the oscs to fade in a few seconds.

I've blown one LED in testing.The LED failed _shorted_ which is unusual, with a resistance of about 80 ohms both ways, and this caused the circuit to oscillate audibly (much lower frequency)  and at higher voltages still.

[MarkE]

OK so, from casual inspection of the circuit it seems that:

The electrolytic should be shorted.
The LED forward voltage drop needs to be less than that of a white LED.
The LED needs reverse voltage protection.  A 5.1V zener in series with a 1N4148/1N914 etc should take care of that.
The circuit puts big voltage spikes that the second cell must absorb.  What kind of cells are these, primary or rechargeable?

At this point the circuit needs to diverge so much from the original posted, I question that it can be called a replication.  Since TheGeneralHackr says he cannot replicate his claimed performance, what are we actually doing?

[TheGeneralHackr]

I am going to keep working on a rough replication with the suggested added part ex. Red led instead of white and a zener diode in series with the led. The original design continues to work without the capacitor shorted.
Later on I will post the inductance of the original coil.
Both of the cells are identical rechargeable 1500 MAH AA battery's