4 Battery Maintenance
Perform the following tests at the recommended interval. Replace the battery set
every four years or if any of the test criteria are not met.
Initiation / Reacceptance
1. Charger Test—With the batteries fully charged and connected to the charger,
measure the voltage across the battery set. It must read 27.3V +/- 0.3V.
2. Discharge Test—With full system alarm load, the voltage on a fully charged
battery must not fall below 20.4V after 30 minutes.
3. Load Voltage Test—With full system alarm load, the voltage on a fully charged
battery must not fall below 24.6V after one minute.
Testing Interval
1. Semiannually—Perform the Load Voltage
Test.
2. Annually—Perform the Charger Test and
Discharge Test.
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