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Rectangular black 6-cell lithium-ion laptop battery

Dr. Battery

Dr. Battery MPL05271P-15 6-cell 11.1V 4400mAh laptop battery

SKU CH-BGM2-0BD0F

A 6-cell 11.1V 4400mAh lithium-ion replacement battery compatible with numerous Dell Inspiron and Latitude models

  • 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 4400mAh capacity for extended runtime
  • 1V output matches original specifications for reliable compatibility
  • Built-in smart chip provides overcharge, overheat and short-circuit protection
  • Fits Dell Inspiron 14, 15 and 17 models including 3421, 3541 and 5748 series
  • New condition with one-year manufacturer warranty for peace of mind

Dr. Battery 6-cell 11.1V replacement

This new 6-cell lithium-ion battery delivers 11.1 volts and 4400 mAh capacity for compatible Dell Inspiron laptops. It suits owners of 14-inch, 15-inch and 17-inch models who need a direct replacement for a worn original pack. The black housing matches the original aesthetic and fits the existing battery bay without modification. A built-in smart control chip manages charging and discharge cycles for reliable daily operation.

4400 mAh capacity with 49 Wh energy

The 4400 mAh rating provides typical runtime for office tasks, web browsing and media playback on supported Inspiron 3421, 3521, 3721 and related series. Capacity drops under sustained heavy loads such as gaming or video rendering, so users running demanding workloads should keep the AC adapter connected. The 49 watt-hour energy figure aligns with airline carry-on limits for spare batteries. One-year warranty covers manufacturing defects.

Fits listed Inspiron models directly

The pack replaces Dell part numbers including 451-12108, 49VTP, 4DMNG, 4WY7C, G019Y, MR90Y, V8VNT, XCMRD, YGMTN, 0MF69, 24DRM, 312-1387, 312-1390 and 312-1392. It requires no additional cabling, firmware updates or BIOS changes — simply swap the old pack and power on. Built-in protections guard against short circuit, overheating and overload during use. Buyers needing higher capacity or a different voltage should verify their original battery specifications before ordering.

Highlights

  • 6-cell lithium-ion design delivers 4400mAh capacity for extended runtime
  • 1V output matches original specifications for reliable compatibility
  • Built-in smart chip provides overcharge, overheat and short-circuit protection
  • Fits Dell Inspiron 14, 15 and 17 models including 3421, 3541 and 5748 series
  • New condition with one-year manufacturer warranty for peace of mind

Specifications

BrandDr. Battery
ModelMPL05271P-15
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

Will this 11.1 V 4400 mAh pack fit alongside the original Dell AC adapter I already use on my Inspiron 15 3542?

Yes — the pack delivers the same 11.1 V output the original adapter expects, so the existing charger will charge it normally without any voltage mismatch.

How can I confirm the 6-cell lithium-ion unit is working correctly after I install it in my Inspiron 14 3442?

After first boot, open the Dell BIOS power tab; it should recognise the pack, show 11.1 V and a design capacity near 4400 mAh, and report zero charging errors.

Does the box include the smart-chip protection board and the mounting screws, or must I reuse hardware from the old 49VTP battery?

The replacement comes as a complete 6-cell assembly with the protection board built in; no separate screws or circuit board are supplied, so you reuse the original chassis fixings.

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