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Black rectangular 6-cell lithium-ion laptop battery with label showing model MPL08224P-21 10.8V 4400mAh

Dr. Battery

Dr. Battery MPL08224P-21 6-cell 10.8V 4400mAh laptop battery

SKU CH-BQZ9-QV0TE

A 6-cell lithium-ion laptop battery rated at 10.8V and 4400mAh, compatible with Compaq and HP EliteBook and ProBook models

  • Battery type6 Cell Lithium-Ion
  • Battery voltage rating10.8 V
  • Battery capacity4,400 mAh
  • Product colorBlack
  • Product typeBattery
  • Compatible withCompaq 6530b / 6535b / 6730b / 6735b HP 6500b / 6530b / 6535
  • Reliable power for compatible HP and Compaq laptops
  • 6-cell lithium-ion design delivers 4400 mAh capacity
  • 8 V output matches original battery specifications
  • Built-in smart chip enables short-circuit, overheat and overload protection
  • Dr. Battery quality control since 2006 ensures OEM-level performance

Replacement Battery for HP and Compaq Laptops

This 6-cell lithium-ion pack replaces the original battery in Compaq 6530b, 6535b, 6730b, 6735b and a wide range of HP EliteBook and ProBook models. It delivers 10.8V and 4400mAh capacity to restore mobile runtime for compatible business notebooks.

Upgrade from Depleted or Lower-Capacity Packs

The jump is worth it when the original cell no longer holds a charge or when a lower-capacity pack forces frequent tethering to an outlet. A fresh 48Wh unit restores the full unplugged working time the laptop was designed for.

Limits of the 10.8V Lithium-Ion Standard

The chemistry and voltage are fixed by the laptop's charging circuit, so capacity cannot exceed the 4400mAh this form factor allows. Users needing longer runtime must carry a spare pack or use an external power bank instead.

How it compares

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

Price $33.99
Pricier than about 60% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameDr. Battery
Model nameMPL08224P-21
Product colorBlack
Product typeBattery
Power
Battery type6 Cell Lithium-Ion
Battery voltage rating10.8 V
Battery capacity4,400 mAh
Compatibility
Compatible withCompaq 6530b / 6535b / 6730b / 6735b
HP 6500b / 6530b / 6535b / 6700b / 6730b / 6735b
HP EliteBook 6930p / 8440p / 8440w Mobile
HP ProBook 6440b / 6445b / 6450b / 6455b / 6540b / 6545b / 6550b / 6555b / 6730 / 6730b / 6735 / 6735b / 6930 / 6930b
Original Battery Part Number :
484786-001 / 486295-001 / 486296-001 / 489961-001 / 491173-541 / 491173-542 / 532497-241 / 582033-001 / 586765-001 / 586765-002 / 593578-001 / AU213AA / AU213AA#ABA / AU213AA#AC3 / AU213UT / AU213UT#ABA / HSTNN-C66C / HSTNN-C66C-4 / HSTNN-C66C-5 / HSTNN-C67C / HSTNN-C67C-4 / HSTNN-C67C-5 / HSTNN-C68C / HSTNN-C69

Questions about this item

Will the 6-cell 10.8V pack fit the battery bay on an HP EliteBook 8440p?

Yes, the MPL08224P-21 is listed as compatible with the EliteBook 8440p and 8440w Mobile, so it matches the bay dimensions and connector for those models.

What is the most common mistake when swapping this battery in a Compaq 6530b?

People often insert the pack without sliding the release latch fully home; the battery clicks only when the latch engages, otherwise the contacts do not seat and the laptop will not power on.

Does the built-in smart control chip require any firmware update or calibration after installation?

No firmware update is needed; the chip manages charging and protection automatically, though running a full charge-discharge cycle once helps the fuel gauge report capacity more accurately.

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