Harnessing the power of electricity is truly one of mankind's greatest achievements. From indoor lighting to smartphones, being able to use electrical energy to our advantage has completely changed the course of human history. This how to make a battery science project provides kids with a simple, inexpensive way to. Electricity is a form of energy that comes from charged particles. In nearly all electrical devices, negatively charged particles called electrons. All you need are a few simple materials to try this homemade battery: 1. Pennies(at least 5 if you would like to use your batteries to light up an LED) 2. Aluminum foil(only a small amount,. Rip a piece of paper towel about the same size as the aluminum foil and fold it into a similarly sized square. To make your homemade battery, first tear a square piece of aluminum foil about 3 inches (8 cm) per side. Exact dimensions are not important. Fold the aluminum foil into a square about 1 inch (2.5 cm) on each side. Again, exact.