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Black rectangular 6-cell laptop battery with label showing 11.1V 4400mAh

Dr. Battery

Dr. Battery MPL05271P-27 6-cell 11.1V 4400mAh laptop battery

SKU CH-BP7Q-88CTG

Six-cell lithium-ion pack rated at 11.1V and 4400mAh replaces original batteries in 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
  • Replaces Dell Latitude and Inspiron models
  • 6-cell lithium-ion design delivers 4400 mAh capacity
  • 1 V output matches original specifications
  • Built-in smart chip enables quicker charging
  • circuit, overheat and overload protections included

Direct replacement for Dell Inspiron laptops

The Dr. Battery MPL05271P-27 is a new 6-cell lithium-ion pack rated at 11.1V and 4400mAh. It replaces original Dell part numbers including 312-1390, 312-1392, 312-1433, 451-12107 and 451-12108. The pack suits Dell Inspiron 14, 15 and 17 series models such as the 3421, 3437, 3442, 3521, 3531, 3541, 3542, 3543, 3721, 5421, 5521, 5537, 5721, 5737 and 5748.

Fits the existing battery bay without extra parts

No additional cabling, brackets or software are required; the battery slots into the standard compartment used by the listed Inspiron models. A built-in smart control chip manages charging cycles and provides short-circuit, overheat and overload protection. The design frees the user from relying on AC power for typical mobile workloads.

Runs cool and quiet with no moving parts

Passive operation means zero fan noise and no active cooling requirement. The lithium-ion chemistry delivers the rated 49Wh capacity at 11.1V while the integrated protection circuitry limits peak current and temperature during charge and discharge. Normal use stays within the cell’s thermal envelope without external airflow.

How it compares

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

Price $34.99
Pricier than about 62% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameDr. Battery
Model nameMPL05271P-27
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

How long will the 4400 mAh capacity last before the voltage drops under continuous load?

The 11.1 V 4400 mAh lithium-ion pack delivers 49 Wh, so runtime depends on your laptop's power draw rather than a fixed time limit.

Does the built-in smart control chip generate extra heat during all-day charging?

The chip manages quicker charging and lower consumption while providing short-circuit, overheat and overload protection to keep temperatures in check.

Which original Dell battery part numbers must match for this replacement to fit?

Compatible part numbers include 312-1390, 312-1392, 312-1433, 451-12107, 451-12108, 49VTP, 4DMNG, 4WY7C, G019Y, MR90Y, V8VNT, XCMRD, YGMTN and 0MF69.

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