🔋 NFPA 72 (24-Hour Standby + 5-Min Alarm / 15-Min Voice Evac Amp-Hours Ah)

Fire Alarm FACP Battery Standby Calculator

Size secondary emergency power storage battery sets for Fire Alarm Control Panels (FACP) under NFPA 72 Chapter 10: calculate required sealed lead-acid (VRLA) Ampere-hour capacity (Ah = [24-Hour Non-Alarm Standby Current Amps x 24] + [Full Alarm Current Amps x 0.083 Hours] x 1.20 Safety Aging Factor), and fire protection engineering margins.

1. Project & Operating Inputs

Non-Alarm Supervisory Standby Current (Amps e.g. 0.85A Quiescent Load)

Full Alarm Notification Current (Amps e.g. 6.5A Full Strobe/Horn Load)

Customer Bid Price for Supplied & Commissioned FACP Power Rack ($)

12V VRLA Fire Batteries, Battery Cabinet, Power Booster & Tech ($)

2. Financial Breakdown & Yield

NFPA 72 24-HOUR FACP BATTERY

Turnkey FACP Power Retrofit Profit

Life Safety Systems Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost