Battery Maintenance - Siemens PAD-3 Installation, Operation And Maintenance Manual

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9. 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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