TA 900 Series (3rd Gen) HIG
Battery Backup Unit
61213908F1-34A
Copyright © 2020 ADTRAN, Inc.
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Unpack and Inspect the BBU
After unpacking the BBU unit, inspect it for damage. If damage is noted, file a claim with the
carrier; then contact ADTRAN Customer Service.
Batteries are retained and prewired in the BBU in a specific pattern. Battery position is
maintained by foam spacers press-fitted against the housing walls. Removing batteries or
disconnecting wires compromises correct reassembly and should not be attempted.
This device complies with Part 15 of the FCC rules. Operation is subject to the following two
conditions:
• This device may not cause harmful interference.
• This device must accept any interference received, including that which may cause undesired
operation.
Removing the BBU covers could allow batteries to fall out.
The BBU (P/N 1175044L1/L2) weighs in excess of 30 pounds. Arrange for
assistance when handling the BBU for mounting.
The BBU should only be used in specified ADTRAN applications.