When are EPIRB batteries changed?

• A. After emergency use or within the month and year replacement date printed on the EPIRB
• B. Every 5 years
• C. Only during scheduled maintenance
• D. When the crew changes ships

Answer: (C)

Batteries in an EPIRB are replaced as part of scheduled maintenance by an authorized technician, to ensure the beacon will operate reliably in an emergency. Replacing only during maintenance lets the technician test the unit, verify battery life is within its specified service life, and address any other issues while the beacon is being serviced. It isn’t standard practice to replace the battery after emergency use, on a fixed calendar like every five years for all models, or simply when the crew changes ships. Following the manufacturer’s maintenance schedule keeps the EPIRB ready and compliant.