Dr. Battery
Dr. Battery MPL05271P-08 6-cell 11.1V 4400mAh laptop battery
Six-cell 11.1 V 4400 mAh lithium-ion battery replaces original Dell Inspiron and Vostro packs
- 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 49Wh capacity for extended runtime
- 1V output matches original Dell specifications for reliable compatibility
- Smart control chip enables quicker charging and longer discharge cycles
- Built-in protection guards against short circuit, overheat and overload
- Fits Inspiron 14, 15 and 17 models including 3421, 3521 and 5748
Replacement battery for Dell Inspiron laptops
This 6-cell lithium-ion pack replaces original Dell batteries in multiple Inspiron 14, 15 and 17 models. It delivers 11.1 V and 4400 mAh capacity for users who need a direct-fit replacement. The unit is new and carries a one-year manufacturer warranty.
Thermals and power behaviour
The integrated smart control chip manages charging current to reduce heat during recharge cycles. Built-in protection guards against short circuit, overheat and overload conditions in normal operation. Lower power consumption extends usable discharge time between charges.
Build integration
The battery matches the original form factor for the listed Inspiron part numbers including 312-1433, 451-12107 and 451-12108. No additional cables or adapters are required for installation. Buyers who need a different voltage or higher capacity should verify their original battery specifications first.
Highlights
- 6-cell lithium-ion design delivers 49Wh capacity for extended runtime
- 1V output matches original Dell specifications for reliable compatibility
- Smart control chip enables quicker charging and longer discharge cycles
- Built-in protection guards against short circuit, overheat and overload
- Fits Inspiron 14, 15 and 17 models including 3421, 3521 and 5748
Specifications
| Brand | Dr. Battery |
|---|---|
| Model | MPL05271P-08 |
| 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-08 in a Dell Inspiron 15 3542, and which step is often missed?
Power off the laptop, unplug the AC adapter, slide the release latch to unlock the old pack, lift it out, insert the new 6-cell 11.1V battery until the latch clicks, then charge fully before first use — the step many skip is that full initial charge.
What maintenance or replacement will this 4400mAh lithium-ion pack need later?
The built-in smart control chip manages charging and protections, so no user maintenance is required; replace the pack when run-time no longer meets your needs.
What limit appears first during sustained use of this 11.1V 49Wh battery?
The 4400mAh capacity determines how long the laptop runs per charge; under heavy load the pack will reach its discharge limit sooner than under light use.
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