Battery life is an important feature of any portable electronic device. While Apple generally creates incredibly energy-efficient products with exceptional battery life, all batteries depreciate over time. When it comes to Apple's line of iOS devices, there is some confusion as to how to get the longest possible usage out of your battery. A common misconception is that quitting apps that are running in the background will improve the device's battery life. In most cases, the process of opening and closing apps takes more battery and processor power than leaving the app running in the background.