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Cisco 1240 Connected Grid Router Hardware Installation Guide
OL-26223-04
Chapter 12 Installing Battery Backup Units
Disabling and Enabling the BBU in the Router
Note When the BBU discharge is disabled by the backup-battery inhibit discharge command, the BBU does
not charge, even if it is connected to AC power. The BBU discharge must be enabled by the
backup-battery un-inhibit discharge command, and the BBU connected to AC power, for the BBU to
charge.
To disable the BBU discharge in a Cisco CG-OS router:
Step 1 Connect the router to an AC power source.
Step 2 Enter the backup-battery inhibit discharge EXEC command:
CGR1240# battery-backup inhibit discharge
For more information, see the “backup-battery inhibit discharge” section on page 12-25.
Disabling the BBU Discharge in a Cisco IOS Router
Note Disable the BBU discharge—for example, during storage, shipping or transportation, in order to
preserve battery life.
Note When the BBU discharge is disabled by the backup charge-discharge disable command, the BBU does
not charge, even if it is connected to AC power. The BBU discharge must be enabled by the backup
charge-discharge enable command, and the BBU connected to AC power, for the BBU to charge.
To disable the BBU discharge in a Cisco IOS router:
Step 1 Connect the router to an AC power source.
Step 2 Enter the backup charge-discharge disable EXEC command:
CGR1240# battery charge-discharge disable
For more information, see the “battery charge-discharge” section on page 12-27.
Disabling the BBU Operation in a Cisco CG-OS Router
Note Disable the BBU operation—for example, when a battery is due for replacement in an installed and
operational router.
To disable the BBU operation in a Cisco CG-OS router:
Step 1 Connect the router to an AC power source.
Step 2 Enter the backup-battery disable EXEC command:
CGR1240# backup-battery disable
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