Aastra XS - Autonomy

Product Guide - A5000 R5.4 – Aastra X series
BPS0121AENAA01 Page 26/74
5.3.5.8 Autonomy
An external backup battery can be optionally installed to protect the cabinet from a power supply
failure and prevent service disruption and the loss of critical data.
The capacity required depends on the configuration.
Note: The same battery can be connected in parallel on the two cabinets of an Aastra XS12. In this
case, check that the battery can withstand the charging current (2.5 A per ADS150X (AXS) power
unit).
For a standard configuration the battery must conform to the following specifications:
Battery specifications Capacity
Number of battery elements 4
Voltage 4 x 12V
(12V per battery element)
Capacity (amp/hours) 2.1 Ah
Battery autonomy 4 hours in the configuration without
backpanel
Note: batteries of battery cabinets in the Aastra price list have these characteristics.