Raid battery failure not recognised in HP servers, reports controller status OK.

Observium does not give any info about controller batteries, which may be dead even if controller status is ok.

Observium:

Smart Array P400i (Slot 0) Status ok

HP ssacli:

=> ctrl all show status

Smart Array P400i in Slot 0 (Embedded)
Controller Status: OK
Cache Status: Temporarily Disabled
Battery/Capacitor Status: Failed (Replace Batteries/Capacitors)