ML350 G5 server - RAID5 HD Replacement / Smart Array E200i Battery Charge Low

Hello,

I have two issues reported through iLO2 IML for a ML350 G5 Server:

1) 1720-S.M.A.R.T. Hard Drive Detects Imminent Failure

2) 1794-Drive Array - Array Accelerator Battery Charge Low

I have replaced the array accelerator battery (307132-001) last week but it still reports the battery charge low issue. I still need to update the array controller firmware.

My question is:

Should I replace the degraded hard drive (in a RAID5 - 3 HD 300GB each) first before trying to further resolve the battery charge low issue?

Thank you in advance for any insight in to these issues.