EST 3 | How to do Backup Battery Load Test | NFPA 72 2025 Edition

This video will show how to do the Backup Battery Load Test for an EST 3 fire alarm panel NFPA 72 - 2025 Edition Table 14.4.3.2, Component 9(5): Replacement / Load test Test Frequency - Every 3 Years Replace the battery or conduct a load test of the battery capacity. Load test the battery, based on the manufacturer's specifications for a discharge rate of 3 hours or more, by applying the current indicated for the selected hourly discharge rate continuously until the terminal voltage decreases to the end voltage specified by the manufacturer. Record the test duration and calculate the battery capacity including adjustment for ambient temperature. Replace the battery if capacity is less than or equal to 80 percent or at the next scheduled test interval if battery capacity is less than 85 percent. Battery Tester: https://www.bkprecision.com/products/...