"Create an illustration of a cell phone showing a battery life indicator at 100%. Beside it, show a sequence of the battery indicator decreasing by half every 2 hours: first at 50%, then 25%, and so on. Make sure the phone and the battery life indicators are the central elements of the image, with clear labels for each time interval to emphasize the half-life analogy. The background can be a simple desk or table to keep the focus on the phone and its depleting battery. This illustration should effectively convey the concept of half-life in a very relatable and simplified manner, making it easy for anyone to grasp the idea without prior scientific knowledge."