We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular laptop battery with six lithium-ion cells

Dr. Battery

Dr. Battery MPL05271P-01 6-cell 11.1V 4400mAh laptop battery

SKU CH-QB9P-PV7WF

Six-cell lithium-ion replacement battery delivering 11.1 V and 4400 mAh for compatible 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 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 provides overheat and short-circuit protection
  • New condition with one-year manufacturer warranty

Replacement for Dell Inspiron 14, 15 and 17 models

This 6-cell lithium-ion battery replaces Dell part numbers 0MF69, 24DRM, 312-1387, 312-1390, 312-1392, 312-1433 and 451-12107. It fits Inspiron 14 (3421, 3437, 3442, 3443), 14R (5421), 15 (3521, 3531, 3541, 3542, 3543), 15R (5521, 5537), 17 (3721, 5748) and 17R (5721, 5737) laptops. The pack delivers 11.1V and 4400mAh capacity. It is a new unit with a one-year warranty.

Verify model and voltage before ordering

Check the model number on the bottom of your laptop or inside the battery bay against the compatibility list above. Confirm your original battery shows 11.1V output and a matching part number such as 312-1387 or 312-1390. The physical connector and screw-hole pattern must align with the bay on your specific Inspiron chassis. Do not rely on the series name alone; several sub-models use different packs.

Installs directly into the existing battery bay

The battery slides into the standard compartment without adapters or cable routing. Its built-in smart chip manages charging, short-circuit, overheat and overload protection automatically. The 49Wh rating restores original runtime for daily office work and web browsing. It does not add extra ports, change the power-brick requirement or support hot-swap operation. Buyers needing a higher-capacity pack or a second battery for rotation cannot use this single-unit replacement.

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-01
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

Does the package include only the 6-cell 11.1V 4400mAh battery or are tools and cables also supplied?

The box contains the replacement battery unit only; no screwdrivers, cables or installation kits are included.

My Dell Inspiron 15 3521 original battery is marked 49Wh — does this 4400mAh version match that capacity?

Yes, the 4400mAh rating equals 49Wh at 11.1V, so it matches the original specification for the 3521 and other listed models.

What does the 11.1V rating mean once the battery is installed in my Inspiron 14 3442?

It supplies the exact voltage the laptop expects, allowing the built-in smart chip to manage charging, discharge and protection circuits correctly.

More in Laptop Chargers & Batteries

Similar items