You should replace your batteries as recommended by their manufacturer or when capacity has diminished below 65%. This is often within 5 years. Refer to NFPA 72: 14.4.3.2 for complete details on battery replacement.
You should replace your batteries as recommended by their manufacturer or when capacity has diminished below 65%. This is often within 5 years. Refer to NFPA 72: 14.4.3.2 for complete details on battery replacement.