Product Guide - A5000 R5.4 – Aastra X series
BPS0121AENAA01
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5.3.7.8 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. This 19’’ battery cabinet looks like
the system cabinets and is 2U high.
The capacity required depends on the configuration.
Note: The same battery can be connected in parallel on the three cabinets of an Aastra XL. In this
case, check that the battery withstands the charging current (7A per ADS350XL power unit (AXL)).
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)
17Ah
Battery autonomy
4h on average
Note: batteries of battery cabinets in the Aastra price list have these characteristics.