Dr. Battery
Dr. Battery MPL05271P-26 6 Cell 11.1V 4400mAh laptop battery
Six-cell 11.1 V 4400 mAh lithium-ion replacement battery for compatible Dell Inspiron 14, 15 and 17 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
- Compatible with many Dell Inspiron 14, 15 and 17 models
- 6-cell lithium-ion design delivers 4400 mAh capacity
- 1 V output matches original Dell specifications
- Built-in smart chip protects against short circuit, overheat and overload
- New battery with one-year warranty from Dr. Battery
Compatible Dell Inspiron models
This replacement battery fits a wide range of Dell Inspiron 14, 15 and 17 inch laptops including the 3421, 3437, 3442, 3521, 3531, 3541, 3542, 3543, 3721, 5421, 5437, 5521, 5537, 5721, 5737, 5748 and 5749 series. It is intended for owners of those specific models who need a new power source. It is not suitable for Dell laptops outside the listed compatibility range or for other brands.
6 cell lithium-ion thermals and power
The 6 cell lithium-ion pack operates at 11.1V with a 4400mAh capacity rated at 49Wh. A built-in smart control chip manages charging and discharging to reduce power consumption and heat during normal use. Integrated protections guard against short circuit, overheating and overload conditions. No fan or active cooling is involved.
Smart chip and protection features
The onboard smart control chip enables quicker charging and longer discharge time compared to packs without such management. Safety circuits provide short circuit, overheat and overload protection to help prevent damage to the laptop. A one-year manufacturer warranty covers defects. Installation requires user verification of the original battery part number and voltage before fitting.
Highlights
- Compatible with many Dell Inspiron 14, 15 and 17 models
- 6-cell lithium-ion design delivers 4400 mAh capacity
- 1 V output matches original Dell specifications
- Built-in smart chip protects against short circuit, overheat and overload
- New battery with one-year warranty from Dr. Battery
Specifications
| Brand | Dr. Battery |
|---|---|
| Model | MPL05271P-26 |
| Color | Black |
| Type | Battery |
| Compatibility | Dell 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 Type | 6 Cell Lithium-Ion |
| Battery Voltage | 11.1V |
| Battery Capacity | 4400 mAh |
Questions about this item
How do I install the MPL05271P-26 battery in my Dell Inspiron 15R 5521 and what step is often missed?
Power off the laptop, unplug the AC adapter, slide the release latch to remove the old pack, insert the new 6-cell unit until it clicks, then charge fully before first use; the step often missed is completing that initial full charge cycle.
What maintenance or replacement will the 11.1V 4400mAh lithium-ion pack need over time?
The pack is maintenance-free; runtime gradually decreases with charge cycles, so replace it when operating time no longer meets your needs.
What limit appears first during sustained use of this 6-cell 49Wh replacement battery?
The 4400mAh capacity sets the runtime ceiling; under continuous load the pack will deplete before any thermal or voltage limit is reached.
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