Marcus did send me a new ( not yet tested) version of a 1 battery system.
It works according to Marcus in a slow frequenc mode to charge the battery.
It draws current from the battery, then the pulse comes which then feeds back more current
back into the battery.
Marcus wants to build this in August.
STay tuned.
Regards, Stefan.
P.S: The 1 Farad capacitor is one from the Car-Audio type, which people use to buffer their
car audio equipment.