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Rectangular black laptop battery with label showing 11.4V 42Whr

PowerWarehouse

PowerWarehouse JTG7N laptop battery 11.4V 42Whr for Latitude 3340 3440 3540 5340 5440 5540

SKU CH-WP59-0JK2D

Replacement 11.4 V 42 Wh three-cell lithium-ion battery for Latitude 3340, 3440, 3540, 5340, 5440 and 5540 models

  • Battery type3 Cell Lithium-Ion
  • Compatible withLATITUDE 3340, 5340 2-IN-1, 3440, 5440, 3540, 5540, 5340
  • Replaces Dell OEM part 0542WP directly
  • 42 Whr capacity supports all-day mobility
  • 4 V output matches original spec
  • 3-cell lithium-ion chemistry keeps weight low
  • Compatible with Latitude 3340 3440 3540 5340 5440 5540

Direct Replacement Battery

The PowerWarehouse JTG7N is a new 11.4V 42Whr lithium-ion cell pack built to match OEM part numbers 0542WP and CN-0542WP. It supplies 3680mAh of capacity for Latitude 3340, 3440, 3540, 5340, 5440 and 5540 models including the 5340 2-in-1 variant.

Fits Internal Battery Bay

The three-cell pack slides into the existing internal battery compartment without adapters or cable changes. It restores mobile operation for the listed Latitude notebooks and frees the user from permanent mains tethering.

Low Heat And Silent Operation

Lithium-ion chemistry produces minimal warmth during typical charge and discharge cycles and the pack has no moving parts so it adds no audible noise. Power draw follows the laptop's own management profile and the unit carries a 12 month warranty.

How it compares

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

Price $54.99
Pricier than about 85% of the 27,790 comparable items (median $30.99).

Specifications

Product
Part number0542WP, 542WP, CN-0542WP, JTG7N
Power
Battery type3 Cell Lithium-Ion
Compatibility
Compatible withLATITUDE 3340, 5340 2-IN-1, 3440, 5440, 3540, 5540, 5340

Questions about this item

How many watt-hours does the 42 Whr battery deliver before it needs recharging under sustained load?

The battery is rated at 42 Whr, which is the usable capacity before a recharge is required.

Does the 3-cell lithium-ion pack run hot or make noise during all-day operation?

A passive 3-cell lithium-ion pack produces no fan noise and generates only minimal warmth under normal use.

Which Dell Latitude models accept the JTG7N part number 0542WP?

Compatible models include Latitude 3340, 3440, 3540, 5340, 5340 2-in-1, 5440 and 5540.

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