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Rectangular black laptop battery with Dell branding and label details

DELL

DELL WK3F1 laptop battery 3-cell 42Wh 11.4V Latitude 5520 5420 Precision 3560

SKU CH-A99T-M4P45

Replacement 3-cell lithium-ion battery rated 42 Wh at 11.4 V for Latitude 5520, 5420 and Precision 3560

  • Battery TypeLithium-Ion
  • 42 Wh capacity powers compatible Dell laptops through a full workday
  • 4 V lithium-ion chemistry delivers stable voltage for consistent performance
  • Three-cell design balances runtime with a slim profile for Latitude 5520
  • Direct fit for Precision 3560 ensures tool-free installation and secure seating
  • Replaces original battery in Latitude 5420 to restore factory battery life

Direct replacement for Latitude and Precision

This 3-cell lithium-ion battery is built to replace the original pack in Dell Latitude 5520, 5420 and Precision 3560 notebooks. It restores factory runtime for mobile professionals who rely on consistent power away from a desk.

Three-cell layout fits the original bay

The pack uses the same form factor and connector as the OEM unit, so installation requires no tools or cable routing. Once seated, the battery locks securely and the laptop recognises it immediately without BIOS updates.

Rated 42 Wh at 11.4 V for everyday workloads

Under typical office use the cell chemistry delivers steady voltage with minimal heat rise. The low internal resistance keeps fan activity low and power draw stable throughout a full charge cycle.

Highlights

  • 42 Wh capacity powers compatible Dell laptops through a full workday
  • 4 V lithium-ion chemistry delivers stable voltage for consistent performance
  • Three-cell design balances runtime with a slim profile for Latitude 5520
  • Direct fit for Precision 3560 ensures tool-free installation and secure seating
  • Replaces original battery in Latitude 5420 to restore factory battery life

Specifications

Battery TypeLithium-Ion

Questions about this item

What voltage does the 42Wh Dell WK3F1 battery deliver?

The battery is rated at 11.4 volts, which is the output level the Latitude 5520, 5420 and Precision 3560 expect from a 3-cell pack.

Which Dell chassis does the WK3F1 battery fit?

It is built for the Latitude 5520, Latitude 5420 and Precision 3560; the physical shape and connector match those models only.

How is the WK3F1 battery installed and what step is often missed?

Power off the laptop, remove the base cover, disconnect the old pack, connect the new WK3F1, then reattach the cover and let the system recognise the fresh battery before first use.

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