Figure 3: Front of Battery Backup Unit
Description
Item
BBU Interface Socket
1
BBU Alignment Hole
2
Captive Nut (6) for installing the BBU for stacking or installing BBUs inside the BBU
bracket of the BBU module
3
Installing BBUs in the Router
This section describes how to install a BBU in the router. A new BBU will be about 50% charged when you
receive it.
When you install a BBU in the router, if there is no AC power being supplied to the router, the BBU (if not
in a disabled state) will immediately begin to power the router when it is connected.
Caution
To prevent the BBU from powering the router prior to installation in the field, the BBU is disabled during
shipment. To ensure the BBU can be charged and power the router when required, enable the BBU right after
installation.
When you replace a BBU in the router, we highly recommend:
Note
• Replacing all the BBUs.
• Verifying all the replacement BBUs are the same version.
When a router operates with different BBU versions, it may result in misbehavior in the BBU functionality.
Follow these steps to install BBUs in the router:
Installing Battery Backup Units
8
Installing Battery Backup Units
Installing BBUs in the Router
