AMPS-24 Manual —
P/N 51907:J2 02/26/2014
45
Calculating the Battery Requirements
Power Supply Calculations
4.2.2 Calculating the Battery Size
Use this table to choose the battery size, in amp-hours, needed to support the fire alarm system. The
AMPS-24 can charge batteries from 7 to 200 AH. Select batteries that meet or exceed the Total
Amp-Hours calculated in Table 4.4 and that are within the acceptable battery charger range. Write
the amp-hours requirements on the Protected Premises label.
Battery Size
Voltage
Rating
Number Required
Our Part
Number
*
* Manufactured to our specifications by PoweSonic.
Backbox
†
(Order Part Number)
† Red version available for non-EQCAB models; add “R” to part number listed here.
7 AH
12 volts
two
BAT-1270
CABS-PS1, SBB-A4, SBB-B4,
SBB-C4, SBB-D4, EQBB-B4,
EQBB-C4, EQBB-D4, BB-25
12 AH
12 volts
two
BAT-12120
CABS-PS1, SBB-A4, SBB-B4,
SBB-C4, SBB-D4, EQBB-B4,
EQBB-C4, EQBB-D4, BB-25
26 AH
12 volts
two
BAT-12260
SBB-A4, SBB-B4,
SBB-C4, SBB-D4, EQBB-B4,
EQBB-C4, EQBB-D4, BB-25
55 AH
12 volts
two for 55 AH
four for 110 AH
BAT-12550
BB-55, NFS-LBB
BB-100
100 AH
12 volts
two for 100 AH
four for 200 AH
BAT-121000
BB-100
BB-200
Table 4.5 Selecting the Battery Size
NOTE:
Battery size is limited to 7 AH minimum and 200 AH maximum using the internal AMPS-24
battery charger.
