Command
| Command | Description |
|---|---|
ATEXPORT_BATTERY_CALCULATIONS |
Export battery calculation reports to Excel |
Prerequisites
- A FireCAD project must be open
Overview
Exports battery calculation reports per NFPA 72 requirements, showing standby current, alarm current, required battery capacity, and derating calculations for each panel.
Steps
- Type
ATEXPORT_BATTERY_CALCULATIONSin the AutoCAD command line - Select the panels to include
- The report is generated as an Excel file
Calculation Formula
Required Ah = (Standby Current x Standby Hours + Alarm Current x Alarm Minutes/60) x Derating Factor
Default values (configurable in Options):
- Standby: 24 hours
- Alarm: 5 minutes
- Derating Factor: 1.2
Report Options
The Select Circuits dialog includes a Battery Calculation Settings tab with options specific to this report:
- Show Speaker Currents (W ÷ V = A) — Converts speaker wattage to alarm current using the circuit voltage, so speakers appear in battery calculations alongside current-based devices
- Show Only Circuit Current Totals (Hide Part Details) — Collapses individual devices to circuit-level totals
- Include Cell Formulas — Embeds Excel formulas for standby/alarm current totals
- Include Circuits Without Current — Shows circuits that have zero standby and alarm current
- Ignore Spare Circuits — Excludes spare/unused circuits from the report
Tips
- Battery calculation parameters are configured in Options & Configuration under the Reports tab
- NFPA 72 Section 10.6.7.2 defines the 24-hour standby + alarm time requirements
Related Commands
FireCAD is the industry-leading AutoCAD add-in for fire alarm system design — from circuit layout to wire routing to code-compliant reports.
Learn more and get started at getfirecad.com →
Inspect Point Integration — Fire alarm system device lists and bill of materials can be pushed directly from FireCAD into Inspect Point, eliminating manual data entry and ensuring every device is ready for inspection scheduling and ongoing asset management.
Learn more here →