Cisco Firepower 8140, Installing

Page: 1 / 18

Installing Battery Backup Units
The Cisco Catalyst Industrial Router 8140 Heavy Duty Series Router (IR8140H or router) supports up to three
battery backup units (BBUs), which provide power to the router if the router AC power supply fails or is not
available. This section describes the BBU features and installation procedures.
These topics are discussed:
• Battery Backup Operations, on page 1
• BBU Status, on page 2
• Battery Backup Mode, on page 3
• BBU Lifecycle Handling and Storage Guidelines, on page 3
• Preparing to Install the BBU, on page 5
• BBU Components, on page 6
• Installing BBUs in the Router, on page 8
• BBU Technical Specifications, on page 16
Battery Backup Operations
The battery backup unit (BBU) provides the router with an emergency power source if the AC power source
is unavailable.
The router supports up to three BBU units installed at one time. The units are mounted in the center-front of
the IR8140H. When you install 3 BBUs, up to 8 hours of battery backup power is available on a fully-loaded
system in the event of an AC power failure. BBUs can be replaced in the field.
The BBU can be installed in the router while the router is powered on and operating normally.
The BBU internal components include battery cells, a primary protection circuit, a fuel gauge, and a charger.
For detailed, illustrated descriptions of the BBU, see
BBU Components, on page 6 .
Installing Battery Backup Units
1