HPE 462976-001 RAID Controller Backup Battery

The Backup Battery HPE 462976-001 RAID Controller is a replacement backup power module designed for use with compatible HPE RAID controller cards. Using Nickel-Metal Hydride (NiMH) chemistry and a nominal capacity of 650 mAh, this compact battery maintains cache power long enough to preserve write data in the event of an unexpected power loss. It is intended to support data integrity and allow the controller to flush or commit cached writes to storage when system power is interrupted.

Advantages

This HPE backup battery provides a stable, rechargeable energy source that integrates with supported RAID controllers to protect volatile cache. Its NiMH construction offers a balance between cycle life and safe operation, and the 650 mAh capacity is sized to cover typical cache-retention requirements for server controllers. Installation is straightforward on compatible modules, and the battery is a direct form-fit replacement designed to match the electrical and physical characteristics expected by the controller.

Suitable for

• Maintaining cache integrity on compatible HPE RAID controllers during power interruptions
• Servers and storage systems that rely on controller cache for write performance
• Service and maintenance replacements in datacenter equipment

When it may not be suitable

This battery is specific to particular HPE RAID controller modules and should only be used where the controller manufacturer specifies compatibility. It does not serve as a general-purpose backup battery for other devices and will not provide extended runtime for entire systems. For systems that require longer autonomous run times or that use different backup technologies, an uninterruptible power supply (UPS) or a controller-specific capacitor solution may be more appropriate.

Key specifications

• Chemistry: Nickel‑Metal Hydride (NiMH)
• Nominal capacity: 650 mAh
• Form factor: compact replacement module for RAID controller battery slot
• Intended use: backup power for controller cache during power loss

How to use

Power down the server according to the manufacturer's maintenance procedures before replacing the backup battery. Remove the existing battery module from the RAID controller bay or battery carrier and insert the HPE 462976-001 ensuring correct orientation and secure mechanical engagement. After installation, follow controller firmware or system BIOS procedures to register or initialize the new battery if required. Verify battery status through the RAID controller management interface and perform any recommended battery conditioning cycles as specified by the controller documentation.

What to consider before purchase

• Confirm compatibility with your specific HPE RAID controller model and controller firmware version
• Ensure that the 650 mAh NiMH capacity meets your cache-retention requirements
• Check service documentation for proper replacement procedure and any required initialization steps

Recommendations

Store and operate the battery within the environmental limits specified by the server and controller documentation. Replace the battery at the intervals recommended by the controller vendor or when battery health monitoring indicates diminished capacity. Always follow electrostatic discharge (ESD) precautions and the server manufacturer's service instructions when handling and installing the battery.