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Black rectangular Li-ion laptop battery with label showing 11.4V 51WH

KingSener

KingSener 7WNW1 laptop battery 11.4V 51WH for Dell Latitude 5420 5424 7424

SKU CH-RJP5-CPXV6 MPN 7WNW1

Replacement 11.4 V 51 Wh Li-ion battery fits Dell Latitude 5420, 5424 Rugged and 7424 Rugged Extreme models

  • Battery Voltage11.4V
  • Battery Capacity51WH
  • 4 V 51 Wh capacity powers Dell Latitude 5420 5424 7424
  • 100 % brand-new cells deliver full design capacity from first charge
  • Li-ion chemistry gives stable output and longer run-time
  • Exact OEM fit matches original dimensions for tool-free installation
  • Compatible with part numbers 7WNW1 DMF8C P85G P86G

Replacement battery for Latitude 5420 5424 7424

This 11.4 V 51 Wh lithium-ion pack replaces the original Dell battery in Latitude 5420, 5424 Rugged and 7424 Rugged Extreme models. It matches the factory form factor so installation requires no modification. The KingSener 7WNW1 unit is supplied new and ready for immediate use.

Stable output with quality cells

High-quality Li-ion cells and a tested PCB deliver the rated capacity without inflation, giving consistent voltage under normal workloads. The pack runs at the standard 11.4 V and maintains its charge profile through regular charge cycles. Normal operating temperatures are sustained by the cell chemistry and internal protection circuit.

Direct fit for listed Dell models

The battery slots into the existing compartment of the compatible Latitude chassis, using the original latch and connector. No extra cables, adapters or mounting hardware are needed. Users should fully charge and discharge the pack two or three times at low current to calibrate the fuel gauge, then store it above 80 % charge if removed for longer periods.

Highlights

  • 4 V 51 Wh capacity powers Dell Latitude 5420 5424 7424
  • 100 % brand-new cells deliver full design capacity from first charge
  • Li-ion chemistry gives stable output and longer run-time
  • Exact OEM fit matches original dimensions for tool-free installation
  • Compatible with part numbers 7WNW1 DMF8C P85G P86G

Specifications

BrandKingSener
Model7WNW1
Part Number7WNW1 DMF8C 0DMF8C P85G P86G
Battery Voltage11.4V
Battery Capacity51WH

Questions about this item

How do I install the 7WNW1 battery in my Latitude 5420, and what step is often missed?

Power off the laptop, remove the bottom case screws, disconnect the old battery connector before unscrewing it, then connect the new 7WNW1 battery cable firmly before reassembling; the step often missed is disconnecting the old battery first.

What maintenance will the 11.4V 51WH Li-ion battery need later?

Fully charge and discharge it two or three times when new; if stored, recharge above 80% at least once a month; avoid constant adapter connection, heat, humidity and physical damage.

What limit appears first during sustained heavy use of this 51WH pack?

The 51WH capacity determines runtime; under continuous high load the pack will deplete fastest, so the practical limit is total energy capacity rather than voltage or thermal throttling.

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