1. What is the Fire Lite Battery Calculator?

The Fire Lite battery calculator determines the required battery capacity (in ampere-hours) for Honeywell Fire Lite fire alarm control panels based on standby current and alarm current draw.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• Standby A — Standby current in amps
• Alarm A — Alarm current in amps
• 24 — Hours of standby operation required
• 0.083 — 5 minutes converted to hours (5/60)
• 1.25 — Safety factor

Explanation: The calculation accounts for 24 hours of standby operation plus 5 minutes of alarm operation with a 25% safety margin.

3. Importance of Battery Capacity Calculation

Details: Proper battery sizing ensures fire alarm systems remain operational during power outages, meeting NFPA requirements for emergency operation.

4. Using the Calculator

Tips: Enter the standby current (typically found in panel specifications) and alarm current (sum of all activated devices). Both values must be in amps.

5. Frequently Asked Questions (FAQ)

Q1: Why is there a 1.25 multiplier?
A: The 25% safety factor accounts for battery aging and ensures sufficient capacity over the battery's lifespan.

Q2: What battery types are used with Fire Lite panels?
A: Sealed lead-acid batteries are typically used, sized according to the calculated capacity.

Q3: How often should batteries be replaced?
A: NFPA recommends replacement every 3-5 years or when capacity drops below 80% of rated capacity.

Q4: Does this calculator apply to all Fire Lite panels?
A: This applies to standard Fire Lite panels. Always consult specific panel documentation for requirements.

Q5: What if my system has multiple alarm stages?
A: Use the highest current draw scenario or sum all alarm currents for worst-case calculation.