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Dell M3KCN 42Wh lithium-ion battery showing top label, safety icons, and connector edge
Dell M3KCN 42Wh lithium-ion battery showing top label, safety icons, and connector edge
Dell 42Wh battery front label with type W100X and safety icons
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Dell BTRY PRI 42WHR 3C LITH BYD (M3KCN) 42Wh Battery

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$126.99 exc. VAT Note: VAT will be charged for UK & EU Countries at checkout. For Zero VAT (for EU buyers), please provide a VAT number at checkout.

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Dispatch Time: Next Working Day Dispatch timelines are estimates and may vary due to unforeseen delays of 1-2 working days for small orders. Larger quantities may require additional processing time.

Product Code: BTEL-1068

MPN #: M3KCN

Product Condition: New

Running out of power mid-task is frustrating, especially when you rely on your laptop for work or study. The Dell BTRY PRI 42WHR 3C LITH BYD (M3KCN) 42Wh Battery is a replacement notebook battery that restores full-day mobility, letting you stay productive without hunting for a charger.

Benefits of Dell Notebook Battery

You gain reliable power that lasts through long meetings and study sessions, giving you confidence that your device won’t shut down unexpectedly. The battery’s lithium-ion chemistry ensures stable performance over many charge cycles, reducing the need for frequent replacements. Its 1-year limited warranty provides peace of mind, while the familiar black colour blends seamlessly with most Dell laptops. Overall, it offers a cost-effective way to extend your notebook’s lifespan.

Key Features of a 42Wh Notebook Battery
  • Colour: Black. A discreet finish that matches the original look of your laptop.
  • Product Line: Dell. Guarantees compatibility with Dell notebook models.
  • Packaged Quantity: 1. Comes as a single unit ready for installation.
  • Warranty: Limited warranty - 1 year. Protects your investment against defects.
  • Capacity: 42 Wh. Supplies enough energy for several hours of typical use.
  • Capacity (Wh): 42Wh. Confirms the energy rating in standard units.
  • Technology: Lithium ion. Provides high energy density and long service life.
  • Product Type: Notebook battery. Designed specifically for portable computers.
  • Device Type: Notebook battery. Fits the power requirements of laptops.
  • Subcategory: Batteries. Part of a broader range of reliable power solutions.

 

Usages of a 42Wh Notebook Battery

A 42Wh notebook battery fits naturally into everyday scenarios:

  • Replacing a worn-out battery in a Dell laptop at home or office.
  • Keeping a spare battery for travel, so you can swap when power runs low.
  • Providing backup power during power outages or remote work trips.
  • Enabling long-duration presentations without needing a charger.
  • Supporting field work where access to outlets is limited.

 

Dell Notebook Battery

Many buyers worry whether a third-party battery will match the original’s performance or cause compatibility issues. They also fear short warranty periods and unreliable build quality. These concerns often lead to hesitation or the decision to keep an ageing battery longer than advisable.

The Dell BTRY PRI 42WHR 3C LITH BYD (M3KCN) 42Wh Battery removes those doubts. It is listed under Dell’s own product line, uses the same 42Wh lithium-ion technology as the OEM unit, and includes a full year of limited warranty. With exact specifications matching the original, you can trust that it will deliver the same run-time and safety standards, giving you a hassle-free replacement that restores your notebook’s mobility.

 

Specifications
Miscellaneous
Miscellaneous / Color Category Black
Header
Header / Product Line Dell
Header / Packaged Quantity 1
Manufacturer Warranty
Manufacturer Warranty / Service & Support Limited warranty - 1 year
Battery
Battery / Capacity 42 Wh
Battery / Capacity (Wh) 42Wh
Battery / Technology Lithium ion
Service & Support
Service & Support / Type 1-year warranty
General
General / Product Type Notebook battery
General / Device Type Notebook battery
General / Subcategory Batteries
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