I tried that today. I even replaced with new batteries I had and left server plugged into power and powered off for about 8 hours. Powered server on and still no luck with batteries. Status is below.

Controller PERC 5/i Integrated (Slot Embedded)
ID                  : 0
Status              : Critical
Name                : Battery 0
State               : Failed
Recharge Count      : Not Applicable
Max Recharge Count  : Not Applicable
Learn State         : Idle
Next Learn Time     : 90 days 4 hours
Maximum Learn Delay : 7 days 0 hours

Controller PERC 5/E Adapter (Slot 2)
ID                  : 0
Status              : Non-Critical
Name                : Battery 0
State               : Missing
Recharge Count      : Not Applicable
Max Recharge Count  : Not Applicable
Learn State         : Idle
Next Learn Time     : 0 hours
Maximum Learn Delay : 7 days 0 hours