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Rectangular black lithium-ion laptop battery pack

KingSener

KingSener MR90Y 11.1V 65Wh 6000mAh laptop battery

SKU CH-1CC8-0RQ5T MPN MR90Y

Replacement lithium-ion battery delivering 11.1V and 65Wh for compatible Dell Inspiron 14 and 15 series laptops

  • Battery Voltage11.1V
  • Battery Capacity65WH/6000mAh
  • High 65Wh capacity for long runtime
  • 1V lithium-ion cells deliver stable power
  • Replaces XCMRD MR90Y XRDW2 YGMTN 6KP1N part numbers
  • Fits Dell Inspiron 14 and 15 series laptops
  • Brand new condition with 100% quality guarantee

Compatible Dell Inspiron Models

This 11.1V lithium-ion replacement battery fits a wide range of Dell Inspiron 14 and 15 series laptops, including the 3421, 3521, 5421 and 5521 families. It also covers Vostro 2421 and 2521 models for users needing a direct swap.

Sustained Capacity Performance

The 65Wh, 6000mAh pack delivers consistent energy output during long work sessions rather than short bursts. Its cell chemistry maintains stable voltage across the discharge cycle to support everyday productivity tasks.

Thermal and Power Behaviour

The battery operates at the specified 11.1V without exceeding normal temperature ranges for standard office use. Internal protection circuits manage charge current to keep power draw steady and noise non-existent.

Highlights

  • High 65Wh capacity for long runtime
  • 1V lithium-ion cells deliver stable power
  • Replaces XCMRD MR90Y XRDW2 YGMTN 6KP1N part numbers
  • Fits Dell Inspiron 14 and 15 series laptops
  • Brand new condition with 100% quality guarantee

Specifications

BrandLUSONBAY
ModelMR90Y
Part NumberXCMRD MR90Y XRDW2 YGMTN 6KP1N
Battery Voltage11.1V
Battery Capacity65WH/6000mAh

Questions about this item

Does the 11.1V 65Wh battery run hot during all-day use?

The 11.1V Li-ion pack is rated at 65Wh and 6000mAh; normal operation stays within Dell thermal limits for the listed Inspiron models.

Must my laptop already have the original MR90Y connector to install this replacement?

Yes — the MR90Y part number XCMRD MR90Y XRDW2 YGMTN 6KP1N matches the factory connector on compatible Inspiron 14 and 15 series units.

Will the 6000mAh capacity work correctly with an older Inspiron 3421 charging circuit?

The 11.1V 65Wh specification matches the original MR90Y design used in the Inspiron 3421, so the existing charging circuit manages it normally.

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