Genuine IBM/Lenovo Cache Backup Battery

Keep your storage controller's cache protected. This is a controller battery unit designed for IBM DH8 and FlashSystem 840/900 series storage systems, providing critical backup power to protect cached write data during unexpected power loss — essential for maintaining data integrity in enterprise storage environments.

Key Details

• Part Number: 01LJ604
• FRU Number: 01LJ604
• Alternative/Cross Part Numbers: 00AR260, 01EJ624, 00AR056, 01EJ623
• Compatible Systems: IBM DH8 Controller, IBM FlashSystem 840, IBM FlashSystem 900
• Component Type: Controller cache backup battery
• Tested: Yes — every unit is functionally tested before shipment
• Condition: [specify — New / Refurbished / Tested Pull, based on your actual stock]

Why This Battery Matters

The cache battery preserves unsaved data in your storage controller's write cache during a power interruption, preventing data loss and giving your system time for a safe shutdown or failover. A failing cache battery can trigger write-cache disablement and degrade array performance, so timely replacement is critical for production environments.

Shipping & Handling

• Shipped via Battery Special Line (compliant hazardous-goods handling for lithium battery shipment)
• Dispatched via UPS, FedEx, or DHL
• Carefully packed in anti-static bags with bubble wrap, foam padding, and sturdy boxing to ensure safe transit

Compatibility Note

Please verify this part number matches your existing controller's FRU/part label before ordering, as IBM storage battery modules are model- and firmware-specific.