Amultimeteris the standard tool used by fire alarm technicians to measure bothbattery voltageandcharging current.
NFPA 72 (2022), Table 14.4.3.2 – Testing Methods for Batteries:
Testing includes checking the voltage and current — commonly done using a multimeter.
Multimeters are capable of readingDC voltage(for battery levels) andamperage(for charge current).
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