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For the term "simple homemade cell phone battery charger circuit".

Input Current measurement test into the 300 Watts inverter with the ALUM electrolyte car battery

http://www.overunity.com/13731/how-to-convert-a-lead-acid-car-battery-to-an-alum-battery-part-1-to-7/ In this video I am showing additionally the current input into the inverter from the battery while also showing the voltage on the battery. I am also showing the idle input current when…

Modified Fuji Circuit Joule Thief circuit lighting 40 watt tube with AA battery

Here we are illuminating a 40 watt tube from a single AA battery. This is a modified version of Josepino’s disposable camera circuit. I have used this same circuit to light 2 of these 48″ tubes end to end. I have also illuminated 400 leds with this sam…

Despeckle Salt cell testing – carbon fiber aluminium cell

http://www.overunity.com/13282/carbonfiber-alufoil-selfmade-diy-battery-with-naco3-or-ashwater-electrolyte In this video I show how I build up a test cell from Despeckle salt powder with water as the electrolyte. Well it only got freshly built around 1.4 Volts. The Washing sodas…