Cache Battery 0 in controller 0 is Degraded (Non-Critical) [probably harmless]

Hello Dears,

I'm getting nagios alerts "Cache Battery 0 in controller 0 is Degraded (Non-Critical) [probably harmless] " from dell PowerEdge R710.

could you please suggest me what was the issue ? which would be helpful.

#omreport storage battery
List of Batteries in the System

Controller PERC H700 Integrated (Slot Embedded)
ID                        : 0
Status                    : Non-Critical
Name                      : Battery 0
State                     : Degraded
Recharge Count            : Not Applicable
Max Recharge Count        : Not Applicable
Predicted Capacity Status : Ready
Learn State               : Due
Next Learn Time           : 0 hours
Maximum Learn Delay       : 7 days 0 hours
Learn Mode                : Auto