Figure 1: Battery Backup Units Mounted on Router
Description
Cisco Product ID (PID)
Item
Battery backup units. The router supports up to three BBUs.
IRMH-BATT-4AH
1
BBU Status
The BBU must first be enabled before it can begin supplying power to the router. The BBU continues to
supply power to the router until at least one of the following conditions is met:
• All BBUs are completely discharged.
• AC power to the router is restored.
• The BBU is disabled with software commands (see
Cisco Catalyst IR8140 Heavy Duty Series Router
Software Configuration
).
For information on technical details about the router power path selection and the conditions that trigger the
BBU to begin operating, see
BBU Technical Specifications, on page 16
Note
Installing Battery Backup Units
2
Installing Battery Backup Units
BBU Status
