MIB: CPQIDA-MIB
Cache Module Board Backup Power Status. This monitors the status of each backup power source on the board.
The backup power source can only recharge when the system has power applied. The type of backup power source used is indicated by cpqDaAccelBackupPowerSource.
The following values are valid:
Other (1)  Indicates that the instrument agent does not recognize  backup power status.  You may need to update your software.

Ok (2)  The backup power source is fully charged.

Recharging (3)  The array controller has one or more cache module backup power  sources that are recharging.
Cache module operations such as Battery/Flash Backed Write Cache, Expansion, Extension and Migration are temporarily suspended until the backup power source is fully charged.
Cache module operations will automatically resume  when charging is complete.

Failed (4)  The battery pack is below the sufficient voltage level and  has not recharged in 36 hours.
Your Cache Module board  needs to be serviced.

Degraded (5)  The battery is still operating, however, one of the batteries  in the pack has failed to recharge properly.
Your Cache  Module board should be serviced as soon as possible.

NotPresent (6)  A backup power source is not present on the cache module board. Some controllers do not have backup power sources.

Capacitor Failed (7)  The flash backed cache module capacitor is below the sufficient voltage level and has not recharged in 10 minutes.  Your Cache Module board needs to be serviced.