How often must sealed lead-acid batteries be visually inspected?

Sealed lead-acid batteries must be visually inspected twice a year to ensure they are functioning properly and to detect any signs of leakage, swelling, or damage that could lead to performance issues or hazards. This semi-annual inspection is essential for maintaining the reliability and safety of the battery systems commonly found in burglar alarms and other security systems.

Performing inspections more frequently, such as once a month or every quarter, while potentially beneficial in certain high-use scenarios, is not typically required for standard applications, where twice a year provides a sufficient balance between proactive maintenance and efficiency. Annual inspections could be too infrequent to catch potential issues that could develop over time, underscoring the importance of regular monitoring to prevent system failures.