Worked on enhancing the PX4-Autopilot repository by improving the robustness of battery telemetry reporting for unmanned systems. Addressed a critical issue where disconnected or unavailable battery data could lead to misleading status indicators by ensuring that all relevant battery fields consistently reflect unavailable data with a -1 marker. This update involved refining the logic for current consumed, current battery, and battery remaining calculations to return -1 when sensor data is missing, thereby improving the reliability of MAVLink telemetry. Utilized C++ programming skills and embedded systems knowledge to deliver a targeted bug fix that strengthens flight safety and telemetry data integrity.