HEWLETT PACKARD 96W MegaCell Enhanced Battery Pack

The HP 815983-001 MegaCell Enhanced 96W battery pack is a compact, server-grade smart storage battery designed to preserve cached data on HPE ProLiant Gen9 DL, ML and SL storage controllers.

This enhanced MegaCell battery (often listed as 815983-001 or 96W Smart Storage Battery with 145mm cable, part number 750450-001) provides temporary power to storage controller cache during power interruptions so write operations can complete safely until redundant power or proper shutdown occurs. Engineered for ProLiant Gen9 systems, it connects via the included 145 mm cable and integrates with server management firmware to report battery status and health.

How does this battery protect storage cache on busy servers?

When a storage controller loses primary power, the HP 96W MegaCell battery supplies enough energy to flush cache contents to permanent storage, preventing data loss from in-flight writes. It works in concert with controller firmware to ensure a safe transition.

• Delivers 96 watts of temporary power for cache retention.
• Interfaces directly with Gen9 Smart Array controllers.
• Provides automatic status reporting to server management tools.
• Includes a 145 mm connection cable for compatible blade and rack chassis.

Which systems and controllers is the HP 815983-001 compatible with?

This MegaCell battery targets HPE ProLiant Gen9 DL, ML and SL series servers and compatible Smart Array controller modules. Compatibility is specific to Gen9 storage controllers; confirm controller model and firmware support before purchase.

• Designed for ProLiant Gen9 DL/ML/SL server families.
• Works with supported HPE Smart Array controllers that accept 96W MegaCell packs.
• Requires controller firmware that recognizes battery status for cache protection.
• Includes 145mm cable (part 750450-001) for correct physical connection.

What are the physical and installation details I should know?

The unit is a self-contained battery pack that mounts in the server’s storage subsystem or controller bay. The supplied 145 mm cable (750450-001) connects the pack to the controller; installation typically requires minimal tools and follows OEM guidelines to maintain warranty and management integration.

• Pack connects with the included 145 mm cable for straightforward wiring.
• Form factor optimized for Gen9 server bays and controller slots.
• Hot-pluggable in many configurations when replacing with approved procedures.
• Firmware integration enables online health monitoring and alerts.

How do I monitor battery health and know when to replace it?

HPE server management utilities and Smart Array firmware report battery state, remaining capacity, and predictive failure indicators. Monitor those alerts and replace the MegaCell when capacity falls below manufacturer thresholds to maintain cache protection.

• Use iLO or Smart Storage Administrator for battery diagnostics.
• Firmware logs record charge cycles and health events.
• Replace proactively if predictive failure or degraded capacity is reported.
• Follow HPE service recommendations for end-of-life replacement intervals.

Who is this for? IT teams and system administrators running HPE ProLiant Gen9 DL, ML or SL servers with Smart Array controllers who need reliable short-term power for write-back cache protection. It is intended for data centers and enterprise environments where preventing in-flight data loss during power disturbances is critical, and where OEM compatibility and integrated health reporting are required. Confirm controller compatibility and firmware support for Gen9 before purchasing.