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Black rectangular 4-cell lithium-ion laptop battery, 40Wh 14.8V

Damaite

Damaite MR90Y 40Wh 14.8V 4-cell laptop battery

SKU CH-TX0K-EQ530

Replacement 40 Wh, 14.8 V lithium-ion battery for Dell Inspiron 14, 15 and 17 series and Latitude 3000 series laptops

  • ColorBlack
  • TypeBattery
  • Battery Type4 Cell Lithium-Ion
  • Battery Voltage14.8 V
  • Battery Capacity40 Wh
  • 40 Wh capacity powers Dell Inspiron 14, 15 and 17 models
  • 8 V four-cell lithium-ion chemistry matches original voltage spec
  • Replaces XCMRD MR90Y and 30-plus Dell part numbers
  • Fits Latitude 14 3000 and Latitude 15 3000 series
  • New battery supplied in black housing

Replacement Battery for Inspiron 3000 Series

The Damaite MR90Y is a new 40 Wh lithium-ion battery built for Dell Inspiron 14, 15 and 17 models in the 3000 series, plus matching Latitude 14 and 15 3000 units. It delivers 14.8 V from four cells and matches the original XCMRD part number.

Owners of listed Inspiron and Latitude 3000 laptops

This unit fits the exact models shown in the compatibility list, including 14‑inch, 15‑inch and 17‑inch Inspiron 3421, 3521, 3721, 5421, 5521 and 5721 variants. Buyers whose laptop uses a different voltage, a different cell count or a connector not listed should look elsewhere.

40 Wh capacity at 14.8 V

The single figure that decides fit is the 40 Wh rating combined with 14.8 V output; if the original battery shows the same watt‑hours and voltage, this replacement will work.

Highlights

  • 40 Wh capacity powers Dell Inspiron 14, 15 and 17 models
  • 8 V four-cell lithium-ion chemistry matches original voltage spec
  • Replaces XCMRD MR90Y and 30-plus Dell part numbers
  • Fits Latitude 14 3000 and Latitude 15 3000 series
  • New battery supplied in black housing

Specifications

ModelMR90Y, N121Y, G35K4, MK1R0, YGMTN
ColorBlack
TypeBattery
Battery Type4 Cell Lithium-Ion
Battery Voltage14.8 V
Battery Capacity40 Wh

Questions about this item

Does the 14.8 V 40 Wh lithium-ion pack run hot or draw extra power after hours of use?

The 4-cell 14.8 V 40 Wh lithium-ion design matches the original voltage and capacity, so thermal behaviour and power draw stay consistent with the factory battery during extended sessions.

My Dell Inspiron 15-3521 charges via a barrel connector — will this MR90Y pack fit and charge without an adapter?

Yes, the MR90Y is a direct replacement for part numbers such as 0MF69 and XCMRD used in the Inspiron 15-3521, so it seats in the original bay and charges through the laptop's standard barrel port.

Will the MR90Y work in an older Inspiron 14-3421 that originally shipped with a 6-cell battery?

The MR90Y replaces Dell part numbers including 312-1387 and 451-12107 listed for the Inspiron 14-3421, so it fits the same compartment and communicates with the existing charging circuit.

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