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Black rectangular laptop battery with smooth matte finish

POWER-FENG

POWER-FENG 63Wh RJ40G laptop battery for Dell Latitude 5420 5520 Precision 3560

SKU CH-ZEPZ-JDMDJ

A 63Wh lithium-polymer battery for Dell Latitude 5420, 5520 and Precision 3560 models

  • TypeBattery
  • Battery TypeLaptop Batteries
  • Li-polymer chemistry keeps weight low and shape flexible
  • 63 Wh capacity extends runtime between charges
  • 2 V output matches original Dell specification
  • 3941 mAh rating supports full-day mobile work
  • Direct replacement for RJ40G in Latitude 5420, 5520 and Precision 3560

Direct replacement battery

The POWER-FENG 63Wh unit replaces the Dell RJ40G pack in Latitude 5420, Latitude 5520 and Precision 3560 laptops. It restores original runtime for mobile professionals who need a fresh power source without changing hardware.

Fixed voltage and capacity

The cell delivers 15.2V and 3941mAh in a lithium-polymer chemistry that matches the factory specification. Runtime is limited to the designed 63Wh envelope, so workloads drawing sustained peak power will drain the pack at the same rate as the original unit.

Black polymer housing with OEM connectors

The black casing uses the same mounting points and connector layout as the stock battery, allowing a straightforward swap with no adapter cables. Physical fit is constrained to the three listed models; other Dell chassis will not align with the screw holes or latch mechanism.

Highlights

  • Li-polymer chemistry keeps weight low and shape flexible
  • 63 Wh capacity extends runtime between charges
  • 2 V output matches original Dell specification
  • 3941 mAh rating supports full-day mobile work
  • Direct replacement for RJ40G in Latitude 5420, 5520 and Precision 3560

Specifications

TypeBattery
Battery TypeLaptop Batteries

Questions about this item

Should I pick the 63Wh version or a lower-capacity alternative for my Dell Latitude 5520?

The 63Wh pack delivers the highest runtime available for the Latitude 5420, 5520 and Precision 3560; choose it when you need maximum time between charges.

What does the 15.2V rating mean once the battery is installed in a Precision 3560?

The 15.2V output matches the original Dell specification, so the system recognises the pack instantly and reports accurate charge levels without calibration issues.

Does the RJ40G part number guarantee compatibility with the Latitude 14 5420 charging circuit?

Yes, RJ40G is the exact Dell service part for the 5420, 5520 and Precision 3560, ensuring the battery communicates correctly with the laptop’s power-management firmware.

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