XLS140 Installation Manual Form Number 95-7673-3 P/N 51927:C  12/06/2005  77
Appendix B: Electrical Specifications
B.1  Electrical Specifications
AC Power  
Batteries
The control panel uses only sealed lead-acid batteries for secondary standby power. Maximum 
battery capacity for the control panel’s integral main power supply is 55 AH. Batteries larger than 
25 AH require the XLS-LBB or other UL-listed battery cabinet. The table below contains 
specifications for batteries that can be used with the control panel; see also Appendix A.3.2 
“Calculating the Battery Size”: 
Component Values
Main Power Supply 120 VAC, 50/60 Hz, 3.0 A; or 
240 VAC, 50/60 Hz, 1.5 A
Wire size Maximum 12 AWG (3.31 mm
2
) with 600 VAC insulation
NOTE: If using an auxiliary power supply such as APS-6R, ACPS-2406, or audio amplifiers, 
refer to the documentation for that equipment.
Charger Description Specifications
Main Power Supply An internal battery charger for 12 
AH to 55 AH
Dual Rate: High Charge: 29.1 VDC
Normal Float Charge: 27.6 VDC
Charging Current: 2.0 A max (1.5 A typical)
CHG-120
Battery Charger
An external battery charger 
designed to charge lead-acid 
batteries between 25 AH and 120 
AH
Dual Rate: High Charge: 28.1 VDC
Normal Float Charge: 27.6 VDC
Charging Current: 4.5 A
ACPS-2406
Auxiliary Charger/
Power Supply
An internal battery charger for 
7AH to 25 AH
Normal Float Charge: 27.6 VDC
Charging Current: 1.1 A max (0.750 A typical)