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Rectangular 3 cell lithium ion battery pack, black plastic casing, label with model numbers visible

GreenTechLLC

GreenTechLLC JTG7N laptop battery 11.4V 42Wh Dell Latitude 5340 5440 5540 Precision 3480 3490 3580

SKU CH-QRFQ-B7M1J

A 42 Wh three-cell lithium-ion replacement battery for Dell Latitude 5340, 5440, 5540 and Precision 3480, 3490, 3580 laptops

  • CompatibilityDELL LATITUDE 5340, LATITUDE 5340 2-IN-1, LATITUDE 5440, LAT
  • Battery Type3 Cell Lithium-Ion
  • Battery Voltage11.4v
  • Battery Capacity3684mah
  • Dimension10.4 X 3.5 X 0.25
  • Weight0.7 lb
  • Direct replacement for Dell Latitude and Precision models
  • 4 V 42 Wh lithium-ion cell keeps runtime consistent
  • Tested for correct voltage, circuit protection and stable current
  • Certified to CE, FCC and RoHS safety standards
  • Slim 10.4 × 3.5 × 0.25 cm profile fits original bay

Replacement Battery for Dell Latitude and Precision

This new GreenTech lithium-ion battery replaces the original JTG7N and 542WP packs in Dell Latitude 5340, 5340 2-in-1, 5440, 5540 and Precision 3480, 3490, 3580 laptops. It delivers 11.4 volts and 42 watt-hours from a three-cell design. The unit is CE, FCC and RoHS certified for safety.

Direct OEM Replacement with Tested Reliability

The battery matches the OEM part numbers JTG7N, 542WP, 0542WP and CN-0542WP without adapters or firmware changes. Each unit is tested for correct voltage, circuit protection, stable current and low self-discharge before it leaves the supplier. No extra cables, drivers or software are included in the package.

42 Wh Capacity for Daily Mobile Work

A 3684 mAh rating at 11.4 V provides enough energy for typical office applications, web browsing and video playback on the supported models. The slim profile of 10.4 by 3.5 by 0.25 inches and a weight of .7 lb keep the laptop’s original balance. Heavy workloads such as sustained rendering or gaming will drain the pack more quickly than light use.

Highlights

  • Direct replacement for Dell Latitude and Precision models
  • 4 V 42 Wh lithium-ion cell keeps runtime consistent
  • Tested for correct voltage, circuit protection and stable current
  • Certified to CE, FCC and RoHS safety standards
  • Slim 10.4 × 3.5 × 0.25 cm profile fits original bay

Specifications

BrandGreenTech
ModelJTG7N, 542WP, 0542WP, CN-0542WP
Part NumberJTG7N, 542WP, 0542WP, CN-0542WP
CompatibilityDELL LATITUDE 5340, LATITUDE 5340 2-IN-1, LATITUDE 5440, LATITUDE 5540, PRECISION 3480, PRECISION 3490, PRECISION 3580
Battery Type3 Cell Lithium-Ion
Battery Voltage11.4v
Battery Capacity3684mah
Dimension10.4 X 3.5 X 0.25
Weight0.7 lb

Questions about this item

How often will the 3-cell lithium-ion JTG7N pack need replacing?

The 3-cell lithium-ion design is rated at 42 Wh and 3684 mAh; capacity will gradually fade with each full charge cycle, so expect to swap the pack once run-time no longer meets your daily workload.

What limit appears first when the battery runs continuously in a Latitude 5440?

The 42 Wh capacity is the first ceiling you hit — sustained load drains the 3684 mAh cells until the pack hits its low-voltage cutoff and the laptop shuts down.

Does the 11.4 V pack get hot or draw extra power during all-day use?

Normal operation keeps the 3-cell pack at typical laptop temperatures; it produces no audible noise and draws only the current the system requests, with no extra heater or fan.

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