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Black rectangular 6-cell lithium-ion laptop battery

Damaite

Damaite MR90Y 6-cell 65Wh 11.1V laptop battery

SKU CH-W7N7-8KB15

A 65 Wh lithium-ion battery for select Dell Inspiron and Latitude laptops

  • Battery type6 Cell Lithium-Ion
  • Battery voltage rating11.1 V
  • Battery capacity65 Wh
  • Product colorBlack
  • Product typeBattery
  • Replaces over 30 Dell part numbers for easy ordering
  • 65 Wh capacity keeps your laptop running longer
  • 1 V lithium-ion chemistry matches original spec
  • Fits Inspiron 14, 15 and 17 models from 3000 series
  • Brand-new 6-cell pack ready for immediate installation

Replacement Battery for Inspiron and Latitude

This 6-cell lithium-ion unit replaces the original MR90Y pack in Dell Inspiron 14, 15 and 17 models plus Latitude 14 and 15 3000 series notebooks. It delivers 65 Wh at 11.1 V and matches the form factor of the listed OEM part numbers. The black housing fits the battery bay without modification.

Thermals and Power in Daily Use

The lithium-ion chemistry maintains stable voltage across the discharge cycle and produces minimal heat during typical office workloads. No active cooling is required and the pack operates silently. Power draw follows the host laptop’s management profile and the 65 Wh capacity supports extended unplugged sessions.

What the Compatibility List Changes

The extensive cross-reference covers more than thirty Inspiron and Latitude model lines including 3421, 3521, 5421, 5521, 5721, 3440 and 3540 series. Buyers with unlisted models or newer chassis revisions cannot rely on this pack. The bundle includes only the battery; no tools, screws or software are supplied.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $28.99
Typical for this category: the median of 27,790 items is $30.99.

Specifications

Product
Product colorBlack
Product typeBattery
Power
Battery type6 Cell Lithium-Ion
Battery voltage rating11.1 V
Battery capacity65 Wh

Questions about this item

How is the MR90Y battery installed, and what step do people often miss?

Power off the laptop and unplug the AC adapter, then slide the release latch to remove the old pack. The step many miss is pressing the new battery firmly until the latch clicks audibly, confirming the 6-cell pack is fully seated.

What replacement will the 11.1 V 65 Wh pack need later?

The lithium-ion cells gradually lose capacity; when run time drops below your needs, replace the entire MR90Y pack with another 6-cell 65 Wh unit — no individual cell service is possible.

What limit appears first during sustained use of this 65 Wh battery?

The 65 Wh capacity sets the runtime ceiling; under continuous load the pack will deplete to the low-voltage cutoff and the laptop will shut down until recharged.

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