In 2017, almost 60 million out of the 325.7 million people located in the U.S participated in running related events (statista.com, n.d.). The difference between direct current (DC) and alternating current (AC) is that DC’s electrical charge flows in one direction and AC’s direction changes back and forth (Shawn Hymel, 2018). Induced current is the current produced by the relative motion of the coil or magnets. The question is: What would be the most effective way to charge a phone’s battery while running? The hypothesis is: If comparing an electromagnetic generator and solar panels, the solar panels will charge a device faster. An electromagnetic generator was created by wrapping copper wire around a cardboard paper towel tube. Seven 30mm x 3mm neodymium magnets were then put into the tube. A digital multimeter was connected to the wire to measure the output of the voltage when the magnets oscillate in the tube. This device was attached to the runner’s calf. Solar panels were arranged in a grid and placed on the runner’s back. The solar panels’ output was recorded using a multimeter in the same way as the generator. Six test runs--three for each system--were conducted on three different days for 15 minutes each. The multimeter was checked 15 times and the instantaneous voltage was recorded. The voltages that were recorded during each test run were averaged to determine the power output of each device. Results pending.