cache is disabled in Smart Array P212 because of battery

HP Smart Array Controllers on HP ProLiant Servers User Guide hp cache status problem detected p212 in slot 5 physicaldrive 2I:1:5 Array D Cache Status Details: Cache disabled; ADG enabler missing Cache Disable hp cache status problem detected p212 in slot 5 I have tried a 256 cache board, 512 cache board, new battery cable, 4 different batteries, and they all say the sam ething, cache is disabled I

hpe 1600w flex slot platinum hot plug low halogen power supply kit The P212 is ideal for RAID 0, 1, 1+0, and can be upgraded with 256 MB Cache module for RAID 5, 5+0 and additionally with Battery Kit and Smart Array