Battery life is a significant concern for Android handheld device users, prompting some to use custom firmware while others prefer stock Android. Strategies to extend battery life exist but vary in effectiveness and effort required. SleepManager is an application designed to optimize battery usage during inactivity by automatically disabling Wi-Fi and Bluetooth, activating Battery Saver, managing specific applications, scheduling syncs, and preventing clamshell devices from waking inadvertently. It is accessible without rooting or complex commands, allowing users to download and configure it easily. The developer noted that SleepManager was created using AI-assisted development, which has sparked discussions about AI's role in app creation.