Worked on enhancing data reliability in the home-assistant/core repository by addressing battery percentage validation for SurePetcare devices. Focused on backend development using Python, the developer implemented a targeted fix to clamp battery readings within the valid range of 0 to 100 percent. This approach prevented invalid battery values from appearing in dashboards and automations, thereby improving data integrity and user trust in battery-related metrics. The solution was delivered through collaborative code contributions and demonstrated attention to code quality. While no new features were added during this period, the work contributed to more robust and reliable backend data processing workflows.