Technical data

Chapter 12: Battery Backup Calculation Worksheet
Series SPB Audio Boosters Manual, Revision A
11-2
SAFEPATH4 (Audio Boosters)
A
B
C
D
E
F
Device Quantity
Standby
Current
Total Current
(B x C)
Alarm
Current
Total Alarm
Current (B x E)
SPB-80/4 0.120 4.320
SPB-160 0.120 8.640
SP4Z-A/B 0.015 0.015
SP4-APS 0.120 0.120
SP-SVC 0.000 0.010
Notification Appliances (4 amps max on SPB-80/4)
TOTAL STANDBY CALCULATIONS
Total standby current, add column D, lines 1 through 19
Multiply by 24 or 60 for standby hours needed. 24
Total standby AH (Amp Hours)
ALARM CURRENT CALCULATIONS
Total alarm current. Add column F, lines 1 through 19
Multiply by 0.083 for 5 min or 0.25 for 15 minutes of alarm 0.083
Total alarm current.
BATTERY BACKUP REQUIREMENTS
Sub total, add line 22+25
Multiply by 1.1 for AH (Amp Hours) needed 1.100
Total AH (Amp Hours)
AH Rounded Up AH
Note 1: Always round up for proper battery size
Note 2: The SPB-80/160 can charge up to 0.500 amps per hour
Note 3: The SPB-320 is comprised of 2 SPB-160's in the same enclosure
Calculate each independently using the SPB-160 calculation entry