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Rectangular black lithium-ion laptop battery, 57Wh 11.4V

KingSener

KingSener 66DWX 57Wh 11.4V laptop battery for Dell Latitude 7340 7350 7440 7450 7640 7650

SKU CH-N36F-TRDYT MPN 66DWX

A 57Wh 11.4V lithium-ion replacement battery for Dell Latitude 13, 14 and 16 series laptops

  • Battery Voltage11.4V
  • Battery Capacity57Wh
  • 57 Wh capacity delivers extended runtime for Dell Latitude 7340 7350 7440 7450 7640 7650
  • 4 V lithium-ion chemistry matches original voltage for stable operation
  • Replaces Dell part numbers 66DWX WW8N8 P126F P175G P176G 0CTJJ6 047T0 0HYH8 FH97R
  • Compatible with Latitude 13 14 16 inch models 7340 7350 7440 7450 7640 7650 series
  • Brand new replacement battery backed by one year warranty

Ready replacement for Latitude 7340 7350 7440 7450

This 57 Wh lithium-ion unit carries the 66DWX part number and runs at 11.4 V. It matches the original Dell specifications for 13-inch 7340 and 7350 models, 14-inch 7440 and 7450 models, and 16-inch 7640 and 7650 models. The battery is new and ships ready to install.

Steady output through a full workday

Rated at 57 Wh and 11.4 V, the pack delivers consistent voltage under sustained loads such as video calls, compiling code or large spreadsheet recalculations. Li-ion chemistry keeps discharge curves flat, so runtime does not collapse when the charge drops below half. The cell arrangement is built to tolerate repeated daily cycles without sudden capacity cliffs.

Black hard-shell casing with direct-fit connectors

The replacement uses a rigid black enclosure that aligns with the existing battery bay screws and latches on every listed Latitude chassis. Internal contacts map 1-to-1 to the motherboard header, so no adapter cables or shims are required. Builders who need a second hot-swap pack or a higher-capacity alternative will not be served by this single 57 Wh unit.

Highlights

  • 57 Wh capacity delivers extended runtime for Dell Latitude 7340 7350 7440 7450 7640 7650
  • 4 V lithium-ion chemistry matches original voltage for stable operation
  • Replaces Dell part numbers 66DWX WW8N8 P126F P175G P176G 0CTJJ6 047T0 0HYH8 FH97R
  • Compatible with Latitude 13 14 16 inch models 7340 7350 7440 7450 7640 7650 series
  • Brand new replacement battery backed by one year warranty

Specifications

BrandKingSener
Model66DWX
Part Number66DWX
WW8N8
P126F
P126F001
P175G
P175G001
P176G
P176G001
0CTJJ6
047T0
0HYH8
FH97R
2ICP6/65/78
3ICP6/65/78
Battery Voltage11.4V
Battery Capacity57Wh

Questions about this item

Does the 57Wh 11.4V Li-ion cell run hot during all-day use?

The 57Wh 11.4V Li-ion pack is designed to match the original thermal profile; it produces no more heat than the factory battery under the same workload.

Will the 66DWX fit my Latitude 7350 (2024) without any extra parts?

Yes — the 66DWX replaces part numbers including 2ICP6/65/78 and 3ICP6/65/78, so it installs directly in the Latitude 13 7350 (2024) with nothing else required.

Can I keep my older Latitude 7440 charger when I swap in this 66DWX battery?

The 66DWX operates at the same 11.4V as the original pack, so your existing Latitude 7440 charger will charge it normally.

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