Honeywell INTELLIKNIGHT 5820XL - Manual (Page 37)

Before You Begin Installation
151209 3-13
3.6.1.3 Maximum Battery Standby Load
Table 3-4 shows the maximum battery standby load for the 5820XL based on 24 and
60 hours of standby. The standby load calculations of line D in the Current Draw
Calculation Worksheet (Table 3-2 for SK devices and Table 3-3 for SD devices) must
be less than the number shown in Table 3-4 for the battery size used and standby
hours required.
* 33AH max battery size for FM (Factory Mutual) installations.
* Required for NFPA 72 Auxiliary Protected Fire Alarm systems for Fire Alarm Service (City Box) and
Remote Station Protected Fire Alarm systems (Polarity Reversal) and Digital Alarm Communicator/
Transmitter (DACT).
Table 3-4: Maximum Battery Standby Load
Rechargeable Battery Size
Max. Load for 24 hrs.
Standby, 5 mins. Alarm
*Max. Load for 60 hrs.
Standby, 5 mins. Alarm
7 AH 270 mA 105 mA
12 AH 475 mA 190 mA
18 AH 685 mA 270 mA
35 AH 1.3 A 540 mA
Warning!
Silent Knight does not support the use of batteries smaller than those listed in Table 3-4. If you use a battery too
small for the installation, the system could overload the battery resulting in the installation having less than the
required 24 hours standby power. Use Table 3-4 to calculate the correct battery amperes/hour rating needed for
your installation.