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Rectangular black lithium-ion laptop battery, 84Wh 11.4V

KingSener

KingSener WJ5R2 84Wh 11.4V laptop battery

SKU CH-RDZE-PF64C MPN WJ5R2

84 Wh 11.4 V lithium-ion replacement battery for Dell Precision 3510 and Latitude 5570 series laptops

  • Battery Voltage11.4V
  • Battery Capacity84Wh
  • 84Wh capacity supports long work sessions
  • 4V rating matches original Dell specifications
  • Brand-new Li-ion cells deliver reliable power
  • Fits Precision 15 3510 and Latitude 5570 models
  • Replaces Dell part numbers WJ5R2 and 4F5YV

Replacement Battery for Dell Precision 15 3510

This 84Wh lithium-ion unit operates at 11.4V and replaces Dell part numbers WJ5R2 and 4F5YV. It is built for Dell Precision 15 3510, M3510, Latitude 5570 and E5570 series laptops. The black pack is 100% brand new and targets owners of those specific models who need a direct swap.

Thermals Noise and Power Draw

The battery delivers its rated 84Wh capacity at 11.4V using standard lithium-ion chemistry. Normal operation produces no audible noise and thermal output matches typical internal laptop cell behaviour. Power draw follows the host system's own management without additional load on the charger beyond the rated voltage.

Build Fit and Constraints

The pack fits the designated Dell Precision and Latitude chassis using the original mounting points and connector. It frees the user from a degraded original cell and restores mobile runtime. Important: WJ5R2 and 6MT4T batteries cannot be swapped, so buyers must confirm the exact part number before purchase.

Highlights

  • 84Wh capacity supports long work sessions
  • 4V rating matches original Dell specifications
  • Brand-new Li-ion cells deliver reliable power
  • Fits Precision 15 3510 and Latitude 5570 models
  • Replaces Dell part numbers WJ5R2 and 4F5YV

Specifications

BrandKingSener
ModelWJ5R2
Part NumberWJ5R2
4F5YV
Battery Voltage11.4V
Battery Capacity84Wh

Questions about this item

How do I install the WJ5R2 battery in a Dell Precision 15 3510, and what step is often missed?

Power off the laptop, remove the base screws, disconnect the old battery cable before fitting the new 11.4V pack, then reconnect and reassemble; the step often missed is disconnecting the cable first.

What maintenance or replacement will the 84Wh Li-ion pack need later?

The battery will gradually lose capacity over charge cycles; plan to replace it when runtime drops below your needs, typically after several hundred full cycles.

What limit appears first during sustained heavy use of this 11.4V battery?

Thermal throttling or voltage sag under continuous high load will cut runtime before the 84Wh rating is fully delivered.

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