The VDR is crucial for recording important voyage data in case of accidents or investigations. Replacing the battery at the required intervals ensures that the device continues to function properly. Battery replacement involves disconnecting the old battery, replacing it with a new one, and performing functionality checks to verify the VDR’s ability to capture data accurately. Regular battery replacement is vital for ensuring compliance with SOLAS regulations and ensuring that your VDR can record critical data during a voyage, potentially aiding in accident analysis and improving maritime safety.