In this video I have a Cell phone charger thats running off one AA battery run a Joule Thief. The JT is filling the big 4400 uf capacitor thats also running the SEC 15. The Capacitor also has a diode comming off it thats charging the 12v 7.5 ah battery. The cell phone charger has a tower connected to it thats also charging ten AA batteries. The setup will run for around eight hours.Then I can just replace that battery with one of the ten.