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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

The most common type of secondary battery power source used in modern fire alarm control units is:

Sealed Lead-Acid (SLA) batteries are the industry standard for fire alarm panels due to their rechargeability and discharge characteristics. Lithium is used in

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Question: The most common type of secondary battery power source used in modern fire alarm control units is:

Answer options: ✅ Sealed Lead-Acid (SLA)

  • Nickel Cadmium (NiCad)
  • Lithium Ion (unprotected)
  • Carbon Zinc (Heavy Duty)

Correct answer: Sealed Lead-Acid (SLA)

Explanation: Sealed Lead-Acid (SLA) batteries are the industry standard for fire alarm panels due to their rechargeability and discharge characteristics. Lithium is used in some specific wireless but not as main panel backup commonly. NiCad is obsolete for this. Carbon-zinc is non-rechargeable.

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