EOL - STRATEGIC 398648-001 Battery The HP 398648-001 proprietary size RAID controller battery has voltage rating of 4.8 V and has capacity of 500 mAh. It works with HP P400/256, P400/512, P400i/256 and P400i FIO RAID controllers. The HP 398648-001 proprietary size RAID controller battery has voltage rating of 4.8 V and has capacity of 500 mAh. It works with HP P400/256, P400/512, P400i/256 and P400i FIO RAID controllers. The HP 398648-001 proprietary size RAID controller battery has voltage rating of 4.8 V and has capacity of 500 mAh. It works with HP P400/256, P400/512, P400i/256 and P400i FIO RAID controllers. The HP 398648-001 proprietary size RAID controller battery has voltage rating of 4.8 V and has capacity of 500 mAh. It works with HP P400/256, P400/512, P400i/256 and P400i FIO RAID controllers. The HP 398648-001 proprietary size RAID controller battery has voltage rating of 4.8 V and has capacity of 500 mAh. It works with HP P400/256, P400/512, P400i/256 and P400i FIO RAID controllers.