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Black rectangular 6-cell lithium-ion laptop battery

Dr. Battery

Dr. Battery MPL05271P-05 6-Cell 11.1V 4400mAh Laptop Battery

SKU CH-AYDA-AA4PE

Six-cell 11.1 V lithium-ion pack rated at 4400 mAh, compatible with Dell Inspiron 14, 15 and 17 series including models 3421, 3542 and 5748

  • ColorBlack
  • TypeBattery
  • CompatibilityDell Inspiron 14(3421) / 14(3437) / 14(3442) / 14R(5421) / 1
  • Battery Type6 Cell Lithium-Ion
  • Battery Voltage11.1V
  • Battery Capacity4400 mAh
  • 6-cell lithium-ion design delivers 4400 mAh capacity for extended runtime
  • 1 V output matches original Dell specifications for reliable compatibility
  • Built-in smart chip provides overheat, short-circuit and overload protection
  • Fits Inspiron 14, 15 and 17 models including 3421, 3542, 5521 and 5748 series
  • New condition with one-year warranty ensures dependable mobile power

Replacement for Dell Inspiron 14 15 17 Series

This 6-cell lithium-ion battery delivers 11.1V and 4400mAh capacity for compatible Dell Inspiron models including 14-inch, 15-inch and 17-inch variants. It suits owners of listed Inspiron 3421, 3437, 3442, 3521, 3531, 3541, 3542, 3543, 3721, 5421, 5521, 5537, 5721, 5737 and 5748 machines needing a direct power-source swap.

Fits listed Inspiron models without modification

The pack matches the original form factor for the part numbers 451-12108, 49VTP, 4DMNG, 4WY7C, G019Y, MR90Y and V8VNT. Installation requires only the laptop's existing battery bay and connector. It frees the user from mains dependency for mobile work but does not support models outside the declared compatibility list.

49Wh pack with integrated protection circuit

Smart control circuitry manages charging, discharge and safety functions including short-circuit, overheat and overload safeguards. Normal operation runs at the rated 11.1V with no external cooling needed. Buyers needing higher capacity or different voltage should verify specifications against their original battery before purchase.

Highlights

  • 6-cell lithium-ion design delivers 4400 mAh capacity for extended runtime
  • 1 V output matches original Dell specifications for reliable compatibility
  • Built-in smart chip provides overheat, short-circuit and overload protection
  • Fits Inspiron 14, 15 and 17 models including 3421, 3542, 5521 and 5748 series
  • New condition with one-year warranty ensures dependable mobile power

Specifications

BrandDr. Battery
ModelMPL05271P-05
ColorBlack
TypeBattery
CompatibilityDell 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
Battery Type6 Cell Lithium-Ion
Battery Voltage11.1V
Battery Capacity4400 mAh

Questions about this item

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

The 6-cell lithium-ion pack is rated at 4400 mAh and 11.1 V, giving 49 Wh of stored energy; under sustained high drain the voltage will sag once the usable charge is depleted.

Does the built-in smart control chip generate noticeable heat or fan noise during all-day charging?

The battery itself has no moving parts; the internal protection circuit manages charging current and thermal limits silently, so any heat or noise comes from the laptop's own cooling system.

Which Dell Inspiron model numbers must my laptop match for this MPL05271P-05 to fit and work?

Compatible models include Inspiron 14 3421, 3437, 3442; 15 3521, 3531, 3541, 3542, 3543, 5521, 5537; and 17 3721, 5748, 5721, 5737.

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