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Dell 57DHN RAID battery backup unit, rectangular circuit board with green finish

DELL

DELL 57DHN RAID Battery Backup 7.2V 5Ma PowerEdge 2500 2550 4600

SKU CH-BFX9-B9ERS

Provides 7.2V 5Ma RAID battery backup for PowerEdge 2500, 2550 and 4600 servers

  • Protects RAID cache during power loss with 7.2 V 5 mA backup battery
  • Compatible with PowerEdge 2500, 2550 and 4600 servers for direct replacement
  • New genuine Dell part number 57DHN ensures reliable operation
  • Maintains controller data integrity when mains power fails

Dell 57DHN RAID Battery Backup

The Dell 57DHN is a 7.2V RAID battery backup module designed for PowerEdge 2500, 2500SC, 2550 and 4600 servers. It preserves controller cache data during unexpected power loss to maintain array integrity. This new component targets administrators maintaining these specific legacy platforms.

Capacity and headroom

The unit supplies 7.2V at 5mA to sustain the RAID controller's cache memory for a limited duration. It comfortably handles brief outages long enough for the cache to flush to disk. It runs out when the discharge period exceeds the cell's rated capacity, requiring replacement to restore protection.

How it compares

Measured against everything we stock in Server & Hot-Plug PSUs, at today’s prices. Recalculated every night.

Price $24.99
Cheaper than about 94% of the 3,798 comparable items (median $131.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Will the 57DHN battery module fit inside my PowerEdge 2500 server chassis?

Yes, the 57DHN is designed for the PowerEdge 2500 and 2500SC chassis, matching the original RAID controller battery form factor.

How can I confirm the 7.2 V battery is holding a charge after installation?

After powering on, check the RAID controller BIOS or Dell OpenManage; a healthy battery shows "Optimal" or "Charging" status and retains cache during a simulated power loss.

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