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Rectangular black laptop battery with label and connector visible

PISKEKAT

PISKEKAT XCMRD 40Wh 14.8V laptop battery 3437 14R 5421 FW1MN 4WY7C

SKU CH-PFGP-AV7TZ

40 Wh, 14.8 V lithium-ion replacement battery compatible with Dell Inspiron 14, 15 and 17 models plus Latitude and Vostro series

  • Battery TypeLaptop Batteries
  • Replaces 40Wh XCMRD and FW1MN part numbers
  • Fits Dell Inspiron 14 3421 3437 14R 5421 models
  • Compatible with Inspiron 15 3542 3543 3521 3537 series
  • Works with Latitude 3440 3540 E3440 E3540 lines
  • 8V 40Wh Li-ion battery with 4-cell design

Compatible Dell models

This 40Wh 14.8V lithium-ion battery fits Dell Inspiron 14, 15 and 17 series including 3421, 3437, 3521, 3537, 3542, 3543, 3721, 3737, 5421, 5521, 5537, 5721 and 5737 models. It also covers Latitude 3440, 3540, E3440 and E3540 plus Vostro 2421 and 2521 series. Buyers with other Dell lines or non-Dell laptops cannot use this pack.

Replaces original part numbers

The cell replaces a long list of Dell part numbers such as XCMRD, 4WY7C, FW1MN, 0MF69, 24DRM, 49VTP, 4DMNG, 6HY59, 68DTP, 6KP1N, 6XH00, 6K73M, 8RT13, 8TT5W, 9K1VP, DJ9W6, G35K4, G019Y, N121Y, MR90Y, MK1R0, T1G4M, VR7HM, PVJ7J, V1YJ7, V8VNT, YGMTN, X29KD, XRDW2, W6XNM, 312-1387, 312-1390, 312-1392, 312-1433, 451-12107 and 451-12108. The jump is worth it when the original battery no longer holds charge or shows swelling. Laptops that require a different voltage or connector layout are not served by this unit.

Installation notes

The pack uses the standard four-cell 14.8V form factor measuring about 10.72 x 1.82 x 0.79 inch and weighing roughly 0.56 lb. Installation typically involves removing the bottom cover, disconnecting the old pack and fitting the new one in the same orientation. Common issues arise when the original part number or physical shape is not verified first, leading to a connector mismatch or incorrect fit.

Highlights

  • Replaces 40Wh XCMRD and FW1MN part numbers
  • Fits Dell Inspiron 14 3421 3437 14R 5421 models
  • Compatible with Inspiron 15 3542 3543 3521 3537 series
  • Works with Latitude 3440 3540 E3440 E3540 lines
  • 8V 40Wh Li-ion battery with 4-cell design

Specifications

Battery TypeLaptop Batteries

Questions about this item

Will the 10.72 x 1.82 x 0.79 inch XCMRD battery fit my Dell Inspiron 14 3437 bay?

Yes, the XCMRD 40Wh pack is built to the original dimensions for Inspiron 14 3437, 14R 5421 and Latitude 3440 series; verify your old battery carries part number FW1MN or 4WY7C before ordering.

Which screw or latch step do people miss when swapping the 4-cell XCMRD unit?

After sliding the 14.8V pack into the bay, many forget to re-engage the spring-loaded latch until it clicks; the battery will not charge if the latch stays open.

What part numbers should I match when the XCMRD 40Wh cell pack eventually needs replacing again?

Match any of the listed Dell part numbers such as 0MF69, 24DRM, 49VTP, 4DMNG, 312-1390, 312-1387, 312-1433 or 451-12107 to ensure the next 4-cell 14.8V unit is identical.

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