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Rectangular black laptop battery with label showing 11.4V 57whr

PowerWarehouse

PowerWarehouse WW8N8 laptop battery for Latitude 7340 7440 7450 11.4V 57whr

SKU CH-KYAB-789DA

Replacement 11.4 V 57 Wh three-cell lithium-ion battery compatible with Latitude 7340, 7440, 7450, 7640 and 2-in-1 variants

  • CompatibilityLATITUDE 7340, 7450, 7340 2-IN-1, 7640, 7440, 7640 2-IN-1, 7
  • Battery Type3 Cell Lithium-Ion
  • Compatible with multiple Latitude models including 7340 7440 7450 7640
  • Replaces OEM part numbers 047T0 CN-0047T0 V0W55 WW8N8
  • 4V 5000mAh lithium-ion cell delivers 57Wh capacity
  • Three-cell design fits 2-in-1 and standard chassis variants
  • Brand-new condition backed by 12-month manufacturer warranty

Replacement battery for Latitude 7340 7440 7450

This new PowerWarehouse WW8N8 lithium-ion battery replaces the original Dell 047T0 CN-0047T0 V0W55 pack in Latitude 7340 7440 7450 7640 and their 2-in-1 variants. It restores mobile power for professionals who need a reliable drop-in replacement. The three-cell design matches the factory form factor.

Critical spec 11.4V 57Wh 5000mAh

The single specification that decides fit is the electrical rating of 11.4V 57Wh 5000mAh. Only a battery with this exact voltage and capacity will charge correctly and report accurate runtime in the listed Latitude models. Different ratings will cause charging errors or reduced run time.

Thermals noise and power draw

Lithium-ion chemistry runs silently with no moving parts so acoustic output is zero. Normal operating temperatures stay within the laptop's thermal design because the cell configuration matches OEM specifications. Power draw during charging follows the system's built-in charge controller limits.

Highlights

  • Compatible with multiple Latitude models including 7340 7440 7450 7640
  • Replaces OEM part numbers 047T0 CN-0047T0 V0W55 WW8N8
  • 4V 5000mAh lithium-ion cell delivers 57Wh capacity
  • Three-cell design fits 2-in-1 and standard chassis variants
  • Brand-new condition backed by 12-month manufacturer warranty

Specifications

Part Number047T0, CN-0047T0, V0W55, WW8N8
CompatibilityLATITUDE 7340, 7450, 7340 2-IN-1, 7640, 7440, 7640 2-IN-1, 7440 2-IN-1
Battery Type3 Cell Lithium-Ion

Questions about this item

How long will the 57 Wh capacity last in a Latitude 7440?

The 57 Wh rating means the pack stores 57 watt-hours of energy; actual runtime depends on screen brightness, workload and power settings in the 7440.

What does the 11.4 V rating tell me about compatibility?

11.4 V is the nominal voltage this pack delivers; it matches the original Dell 047T0 specification for the listed Latitude models.

Will this three-cell pack fit the internal bay of a Latitude 7340 2-in-1?

Yes, the WW8N8 is built to the same physical dimensions as the OEM 047T0 battery for all listed 7340, 7440, 7450 and 7640 variants.

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