04:33 Turn on a LED by single 1.5V battery. Turn on a LED by single 1.5V battery. These motors are extracted from CD-ROM drive. Inefficient method. 0
04:33 Homemade Battery 1.5v – 12v water powered (lights, clocks, calculators) – how to make – simple DIY Homemade water battery. how to make a battery using water. produces free electricity. this “earth battery” is made with 3 items (metal screws, copper wire, a container) powerful 1.5 volts … 0