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Rectangular black 3-cell lithium-ion laptop battery

Total Micro Technologies

Total Micro Technologies 3-Cell 57WHr 11.4V Laptop Battery for Dell Latitude 7340 7440 7640

SKU CH-P8CJ-WPWYG

A 3-cell 57 WHr 11.4 V lithium-ion replacement battery for Dell Latitude 7340, 7440 and 7640 models

  • Product type3 Cell Lithium-Ion
  • 57 WHr capacity powers Dell Latitude 7340, 7440 and 7640 series
  • 3-cell lithium-ion design meets or exceeds OEM specifications
  • 4 V output matches original Dell WW8N8, 047T0 and V0W55 part numbers
  • One-year limited warranty backs the new replacement battery

Compatible Dell Latitude models

This replacement battery fits Dell Latitude 7340, 7340 2-in-1, 7440, 7440 2-in-1, 7640 and 7640 2-in-1 laptops. It is built to meet or exceed the original manufacturer specifications. The unit ships new and carries a one-year limited warranty.

Three-cell lithium-ion design

The pack uses a three-cell lithium-ion layout rated at 57WHr and 11.4V. Equivalent part numbers include WW8N8, 047T0 and V0W55 for cross-reference. Buyers needing a higher capacity or a different voltage should verify their laptop's requirements before ordering.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $69.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameTotal Micro
Product type3 Cell Lithium-Ion

Questions about this item

Will the 3-cell 57WHr lithium-ion pack need replacement after a certain number of charge cycles?

The battery uses a 3-cell lithium-ion design rated at 57WHr and 11.4V; lithium-ion cells gradually lose capacity over repeated cycles, so expect to replace it when run-time no longer meets your needs.

What limit appears first during sustained use — thermal throttling or voltage drop?

Under continuous load the 11.4V lithium-ion cells will hit their lower voltage cutoff before thermal limits become an issue, ending the usable discharge.

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