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Small rectangular lithium-ion server battery with Dell branding and wire connector

DELL

Dell 312-0448 Server Battery 3.7V 1800mAh

SKU CH-KERQ-NM5X4

Rechargeable 3.7 V lithium-ion battery with 1800 mAh capacity for Dell PowerEdge 1900, 1950, 2900, 2950 and 840 servers

  • Electrical Outlet Plug TypeBattery
  • Rechargeable lithium-ion chemistry enables repeated server power cycles
  • 1800 mAh capacity at 3.7 V DC sustains critical cache during outages
  • Direct replacement for OEM part 0NU209 fits Dell PowerEdge 1900 1950 2900 2950 840
  • Proprietary form factor matches original server battery slot exactly
  • WEEE certification confirms environmentally responsible battery disposal

Server Battery for PowerEdge 1900 1950 2900 2950 840

This Dell 312-0448 battery is a direct replacement module for the listed PowerEdge servers. It supplies 3.7 V DC at 1800 mAh to maintain system time and configuration data when main power is removed. The lithium-ion cell is rechargeable and built to the proprietary form factor required by these platforms.

Proprietary form factor with WEEE certification

The battery uses a Dell-specific size that fits only the compatible server chassis, so no adapter or bracket is needed. Its lithium-ion chemistry supports repeated charge cycles during normal server operation. WEEE certification confirms the unit meets European electronic-waste directives for responsible disposal.

Replaces OEM part 0NU209 with no extra accessories

The package contains only the battery itself; no cables, mounting hardware or management software are included. Installation consists of removing the old cell and seating this module in the same socket. Buyers needing a redundant power supply or a hot-swap controller will not find those functions in this product.

Highlights

  • Rechargeable lithium-ion chemistry enables repeated server power cycles
  • 1800 mAh capacity at 3.7 V DC sustains critical cache during outages
  • Direct replacement for OEM part 0NU209 fits Dell PowerEdge 1900 1950 2900 2950 840
  • Proprietary form factor matches original server battery slot exactly
  • WEEE certification confirms environmentally responsible battery disposal

Specifications

BrandDell
Electrical Outlet Plug TypeBattery

Questions about this item

What output voltage does the Dell 312-0448 server battery deliver?

The Dell 312-0448 provides a 3.7 V DC output voltage for compatible Dell PowerEdge servers.

Which Dell PowerEdge models accept the proprietary battery size of the 312-0448?

The proprietary battery fits Dell PowerEdge 1900, 1950, 2900, 2950 and 840 servers.

How is the lithium-ion server battery installed, and what step is often missed?

Insert the battery into the server's dedicated compartment, ensuring the connector aligns and seats fully; the step often missed is not pushing the connector in until it clicks.

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