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Rectangular black lithium-ion laptop battery pack

DELL

DELL 14.8V 40Wh 4-Cell Laptop Battery M5Y1K GXVJ3 HD4J0 HD4JO K185W KI85W WKRJ2

SKU CH-3FYG-BMWP4

A 14.8 V, 40 Wh lithium-ion replacement battery with four premium cells, built to fit the listed Dell part numbers and certified to CE and RoHS standards

  • CompatibilityCompatible with Dell M5Y1K GXVJ3 HD4J0 HD4JO K185W KI85W WKR
  • Battery TypeLithium-Ion
  • 40Wh lithium-ion capacity extends runtime between charges
  • 8V rating matches original Dell specifications for safe operation
  • Four premium cells deliver consistent power output
  • CE and RoHS certified for safety and environmental compliance
  • 100% compatibility with listed Dell part numbers ensures exact fit

Purpose-built replacement

This 14.8 V lithium-ion pack replaces the original Dell M5Y1K GXVJ3 HD4J0 HD4JO K185W KI85W WKRJ2 battery. It is intended for owners of compatible Dell notebooks who need a new power source because the factory cell no longer holds a charge. Buyers whose laptop requires a different voltage or connector will not be served by this unit.

Capacity and headroom

The pack stores 40 Wh across four premium cells, delivering the same energy rating as the original specification. It comfortably powers typical office tasks, web browsing and video playback for a full work session. Runtime will fall short for sustained heavy loads such as rendering or gaming that draw maximum wattage.

Build integration

The battery slots directly into the existing bay with no adapters or cable changes required. CE and RoHS markings confirm compliance with safety and environmental standards. A one-year replacement warranty covers defects in materials or workmanship. Verify the physical layout against the product photos before purchase, as two incompatible variants exist for the same laptop model.

Highlights

  • 40Wh lithium-ion capacity extends runtime between charges
  • 8V rating matches original Dell specifications for safe operation
  • Four premium cells deliver consistent power output
  • CE and RoHS certified for safety and environmental compliance
  • 100% compatibility with listed Dell part numbers ensures exact fit

Specifications

CompatibilityCompatible with Dell M5Y1K GXVJ3 HD4J0 HD4JO K185W KI85W WKRJ2
Battery TypeLithium-Ion

Questions about this item

Will this 14.8 V 40 Wh battery fit alongside my existing Dell charger and motherboard without modification?

Yes, it is designed as a direct replacement for the listed Dell part numbers and uses the same 14.8 V lithium-ion interface, so your original charger and system board will recognise it immediately.

How can I confirm the 4-cell pack is charging correctly after I install it?

The Dell BIOS will report the new 40 Wh capacity and show a normal charge cycle; the operating system battery meter should reach 100 % and discharge evenly across all four cells.

Does the box include the 4-cell battery only, or are screws and tools also supplied?

Only the 14.8 V 40 Wh 4-cell battery is included; any retaining screws or pry tools needed for the swap must be sourced separately.

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