Developed and integrated a battery voltage monitoring and logging feature for the zephyrproject-rtos/nrf_wifi repository, enabling real-time millivolt readings and proactive hardware health tracking for embedded systems. The work involved implementing an event-driven approach to process voltage updates, defining configurable voltage parameters, and exposing a dedicated C API for external access to battery data. By focusing on device driver and firmware development, the solution supports enhanced power management and reduces the need for field diagnostics in battery-powered deployments. The targeted changes were delivered through a single, well-scoped commit, reflecting a focused and technically sound approach to embedded firmware enhancement.