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Grey rectangular 6-cell lithium-ion laptop battery with label showing 11.1V 4400mAh

Dr. Battery

Dr. Battery MPL05222P-21 6-cell 11.1V 4400mAh laptop battery

SKU CH-QZBY-TE2ZR

Six-cell lithium-ion pack rated at 11.1V and 4400mAh replaces batteries in Dell Latitude and Precision laptops

  • Battery type6 Cell Lithium-Ion
  • Battery voltage rating11.1 V
  • Battery capacity4,400 mAh
  • Product colorGrey
  • Product typeBattery
  • Compatible withDell Latitude 6400 ATG / E6400 / E6400 XFR / E6400 ATG / E64
  • Delivers reliable mobile power with 4400 mAh capacity
  • Six lithium-ion cells provide 49 Wh of energy
  • Runs at 11.1 V matching original Dell specifications
  • Compatible with Latitude E6400, E6410, E6500 and Precision M2400, M4400 series
  • Built-in smart chip protects against short circuit, overheat and overload

Dr. Battery 6-cell 4400mAh replacement

This 11.1V lithium-ion pack is built as a direct replacement for Dell Latitude E6400, E6410, E6500, E6510 and E8400 models plus Precision M2400 and M4400 workstations. It suits owners of those specific machines who need a new power source matching the original voltage and cell count.

Smart chip regulates charge and discharge

An onboard control chip manages quicker charging, lower power consumption and longer discharge time while providing short-circuit, overheat and overload protections. The 49Wh design runs within the thermal envelope of the listed laptops without extra cooling requirements.

One-year warranty and installation guides

Dr. Battery backs the unit with a twelve-month warranty and publishes model-specific fitting instructions on its website and YouTube channel. Buyers who cannot verify their original battery part number or output voltage should not purchase this pack.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $31.99
Typical for this category: the median of 27,790 items is $30.99.

Specifications

Product
Brand nameDr. Battery
Model nameMPL05222P-21
Product colorGrey
Product typeBattery
Power
Battery type6 Cell Lithium-Ion
Battery voltage rating11.1 V
Battery capacity4,400 mAh
Compatibility
Compatible withDell Latitude 6400 ATG / E6400 / E6400 XFR / E6400 ATG / E6410 / E6410 ATG / E6500 / E6510 / E8400
Dell Precision M 2400 N / M2400 / M4400 / M4500 / Workstation M2400 64 / WorkStations M2400 / WorkStations M4400
Original Battery Part Number :
1M215 / 312-0748 / 312-0749 / 312-0753 / 312-0754 / 312-0910 / 312-0917 / 312-7414 / 312-7415 / 451-10583 / 4M529 / 4N369 / 9H626 / C719R / DFNCH / FU268 / FU272 / FU274 / FU439 / NM631 / KY265 / PT434 / W1193

Questions about this item

How do I install the MPL05222P-21 battery in my Dell Latitude E6400, and which step is often missed?

Power off the laptop, unplug the AC adapter, slide the release latch to eject the old pack, insert the new 6-cell unit until it clicks, then charge fully before first use; the step many skip is the initial full charge.

What maintenance will this 11.1V 4400mAh lithium-ion pack need over its life?

No scheduled maintenance is required; keep the contacts clean, avoid deep discharge by recharging before the battery hits zero, and store at roughly half charge if the laptop will be unused for weeks.

What limit appears first during sustained heavy load on this 49Wh replacement battery?

The built-in smart control chip will trigger overload protection if current draw exceeds the pack's rated limit, cutting power to prevent overheating and cell damage.

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