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Rectangular black lithium-ion laptop battery, four cells, 10.72 by 1.82 by 0.79 inches

FOCUSTEC

FOCUSTEC 40Wh 14.8V XCMRD laptop battery

SKU CH-PWP8-MJEMV

40 Wh lithium-ion battery fits Dell Inspiron 14, 15, 17 and Latitude 3440, 3540 series

  • Battery TypeLithium-Ion
  • 40Wh capacity powers compatible Dell laptops through a full work session
  • 8V lithium-ion chemistry matches original voltage for stable operation
  • 4-cell design keeps weight to about 0.56 lb for easy portability
  • Replaces Dell part numbers including 4WY7C, FW1MN and 0MF69 across Inspiron, Latitude and Vostro models
  • New condition ensures full cycle life from the first charge

Direct replacement battery

This 40Wh lithium-ion pack operates at 14.8V and fits Dell Inspiron 14, 15 and 17 models including the 3000 series, plus Latitude 3440 and 3540 lines. It replaces a long list of original part numbers such as 4WY7C, FW1MN and 312-1390, so owners of those machines can swap the old cell without adapter cables.

Four-cell lithium-ion construction

The battery uses a standard four-cell Li-ion layout measuring about 10.72 by 1.82 by 0.79 inches and weighing roughly 0.56 lb. Its integrated connector matches the Dell chassis mounting points, allowing a tool-free swap that restores mobile power in minutes.

One-year replacement guarantee

The supplier backs the unit with a one-year warranty covering free replacement or refund if a fault appears, supported by 24-hour email response. Buyers who need a different voltage, a higher capacity or compatibility with non-Dell notebooks should look elsewhere.

Highlights

  • 40Wh capacity powers compatible Dell laptops through a full work session
  • 8V lithium-ion chemistry matches original voltage for stable operation
  • 4-cell design keeps weight to about 0.56 lb for easy portability
  • Replaces Dell part numbers including 4WY7C, FW1MN and 0MF69 across Inspiron, Latitude and Vostro models
  • New condition ensures full cycle life from the first charge

Specifications

Battery TypeLithium-Ion

Questions about this item

What voltage and capacity does the 14.8V XCMRD battery deliver?

The battery supplies 14.8V and 40Wh using a 4-cell lithium-ion pack.

What are the physical dimensions of this battery?

It measures about 10.72 x 1.82 x 0.79 inch and weighs roughly 0.56 lb.

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

Power off the laptop, remove the old pack, align the connector and press firmly until it clicks; many forget to lock the retaining latch.

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