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Black rectangular 6-cell lithium-ion laptop battery pack

Dr. Battery

Dr. Battery MPL05271P-18 6-cell 11.1V 4400mAh laptop battery

SKU CH-M3DX-6WE66

Replacement 6-cell 11.1V 4400mAh lithium-ion battery compatible with Dell Inspiron 14, 15 and 17 models

  • Battery type6 Cell Lithium-Ion
  • Battery voltage rating11.1 V
  • Battery capacity4,400 mAh
  • Product colorBlack
  • Product typeBattery
  • Compatible withDell Inspiron 14(3421) / 14(3437) / 14(3442) / 14R(5421) / 1
  • Compatible with Dell Inspiron 14, 15 and 17 series models
  • 6-cell lithium-ion design delivers 11.1V 4400mAh capacity
  • Smart control chip enables quicker charging and longer discharge time
  • Built-in protections guard against short circuit, overheat and overload
  • New condition with one-year manufacturer warranty

Dr. Battery MPL05271P-18 6-Cell 11.1V 4400mAh

This new Dr. Battery replacement laptop battery delivers 11.1V and 4400mAh capacity using six lithium-ion cells. It is built to match OEM specifications for a wide range of Dell Inspiron 14, 15 and 17-inch models. A smart control chip manages charging and provides short-circuit, overheat and overload protection.

Compatibility and limits

The unit fits Dell Inspiron models including 3421, 3437, 3442, 3521, 3531, 3541, 3542, 3543, 3721, 5421, 5437, 5521, 5537, 5721, 5737 and 5748. It replaces Dell part numbers such as 451-12108, 49VTP, 4DMNG, G019Y, MR90Y, V8VNT, XCMRD and 0MF69. Buyers with laptops outside this listed series or requiring a different voltage or cell count should look elsewhere.

6-cell 11.1V 4400mAh lithium-ion pack

The decisive specification is the 6-cell lithium-ion configuration rated at 11.1V and 4400mAh (49Wh). This voltage and capacity must match the original battery exactly for the laptop to charge and report capacity correctly. Verify the original battery part number and output voltage before ordering.

How it compares

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

Price $32.99
Pricier than about 57% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameDr. Battery
Model nameMPL05271P-18
Product colorBlack
Product typeBattery
Power
Battery type6 Cell Lithium-Ion
Battery voltage rating11.1 V
Battery capacity4,400 mAh
Compatibility
Compatible withDell Inspiron 14(3421) / 14(3437) / 14(3442) / 14R(5421) / 15(3521) / 15(3531) / 15(3541) / 15(3542) / 15(3543) / 15R(5521) / 15R(5537) / 17(3721) / 17(5748) / 17R(5721) / 17R(5737)
Dell Inspiron 3421 / 3437 / 3443 / 3521 / 3531 / 3537 / 3543 / 3721 / 5749 / 3847 / 5421 / 5437 / 5521 / 5537 / 5721 / 5749 / 7447
Dell Latitude 3440 / 3540 / E3440
Dell Vostro 2421 / 2521 / 3445 / 3446 / 3449 / 3546 / 3549
Original Battery Part Number :
0MF69 / 24DRM / 312-1387 / 312-1390 / 312-1392 / 312-1433 / 451-12107 / 451-12108 / 49VTP / 4DMNG / 4WY7C / G019Y / MR90Y / V8VNT / XCMRD / YGMTN
*** Not

Questions about this item

Will this 6-cell 11.1 V pack fit my Dell Inspiron 15 3543 without modification?

Yes, the battery is listed as a direct replacement for the Inspiron 15 3543 and matches the original 6-cell 11.1 V form factor.

What is the common mistake when installing this battery in a Dell Inspiron 17 3721?

Forgetting to slide the release latch fully before pulling the old pack out; the new battery clicks only when the latch is fully engaged.

When will the 4400 mAh capacity of this Dr. Battery unit need replacing?

The 1-year warranty covers defects; typical lithium-ion cells last 2–3 years before runtime falls below useful levels.

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