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Black rectangular 6-cell lithium-ion laptop battery

Dr. Battery

Dr. Battery MPL08251P-23 6-cell 10.8V 4400mAh laptop battery

SKU CH-D9PA-KC4NK

Six-cell lithium-ion replacement battery rated at 10.8V and 4400mAh for compatible HP ProBook models

  • ColorBlack
  • TypeBattery
  • CompatibilityHP ProBook 4330s / 4331s / 4430s / 4431s / 4435s / 4436s / 4
  • Battery Type6 Cell Lithium-Ion
  • Battery Voltage10.8V
  • Battery Capacity4400 mAh
  • Compatible with HP ProBook 4330s, 4331s, 4430s, 4431s, 4435s, 4436s, 4440s, 4441s, 4446s, 4530s, 4535s, 4540s, 4545s
  • 6-cell lithium-ion design delivers 4400 mAh capacity at 10.8 V for extended runtime
  • 48 Wh energy rating supports longer work sessions away from a power outlet
  • Built-in smart chip provides overcharge, overheat and short-circuit protection for safe operation
  • Replaces original HP part numbers 633733-151, 633733-1A1, 633733-241, 633733-251, 633733-321, 633805-0...

What this battery replaces

The Dr. Battery MPL08251P-23 is a new 6-cell lithium-ion unit rated at 10.8V and 4400mAh. It matches original HP part numbers such as 633733-151, 633733-241, 633733-251 and 633805 series. Compatible models include the ProBook 4330s, 4331s, 4430s, 4431s, 4435s, 4436s, 4440s, 4441s, 4446s, 4530s, 4535s, 4540s and 4545s. Buyers with other notebooks or different voltage requirements cannot use this pack.

Thermals, noise and daily power

The internal smart control chip manages charging current to reduce heat during normal operation. Built-in protection circuits guard against short circuit, overheat and overload conditions. Because the pack contains no moving parts, it adds no audible noise to the system. Lower power consumption during charge cycles helps extend overall discharge time between wall charges.

Sustained load behaviour

Under continuous discharge the cell chemistry delivers a stable 48Wh output while the protection logic monitors temperature and current limits. The chip maintains consistent voltage regulation through long work sessions rather than only short bursts. Safety cut-offs activate if thresholds are exceeded, preserving both the battery and the laptop. One-year manufacturer warranty covers defects in materials and workmanship.

Highlights

  • Compatible with HP ProBook 4330s, 4331s, 4430s, 4431s, 4435s, 4436s, 4440s, 4441s, 4446s, 4530s, 4535s, 4540s, 4545s
  • 6-cell lithium-ion design delivers 4400 mAh capacity at 10.8 V for extended runtime
  • 48 Wh energy rating supports longer work sessions away from a power outlet
  • Built-in smart chip provides overcharge, overheat and short-circuit protection for safe operation
  • Replaces original HP part numbers 633733-151, 633733-1A1, 633733-241, 633733-251, 633733-321, 633805-0...

Specifications

BrandDr. Battery
ModelMPL08251P-23
ColorBlack
TypeBattery
CompatibilityHP ProBook 4330s / 4331s / 4430s / 4431s / 4435s / 4436s / 4440s / 4441s / 4446s / 4530s / 4535s / 4540s / 4545s
Original Battery Part Number :
633733-151 / 633733-1A1 / 633733-241 / 633733-251 / 633733-321 / 633805-001 / 633809-001 / 650938-001 / HSTNN-1B2R / HSTNN-DB2R / HSTNN-DB2T / HSTNN-DB3C / HSTNN-I02C / HSTNN-I97C-3 / HSTNN-I97C-4 / HSTNN-I98C-5 / HSTNN-I99C / HSTNN-I99C-3 / HSTNN-I99C-4 / HSTNN-IB2R / HSTNN-LB2R / HSTNN-OB2R / HSTNN-OB2T / HSTNN-Q87C-4 / HSTNN-Q87C-5 / HSTNN-Q88C / HSTNN-Q88C-4 / HSTNN-Q88C-5 / HSTNN-Q89C / HSTNN-XB2E / HSTNN-XB2F / HSTNN-XB2G / HSTNN-XB2H /
Battery Type6 Cell Lithium-Ion
Battery Voltage10.8V
Battery Capacity4400 mAh

Questions about this item

How do I install this MPL08251P-23 battery in my ProBook 4540s, 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 the initial full charge.

What maintenance or replacement will this 4400 mAh pack need over time?

Lithium-ion cells lose capacity with each charge cycle; when runtime drops below your needs, replace the pack with another 10.8 V 6-cell unit matching the original part numbers.

What limit appears first during sustained use of this 48 Wh battery?

The 4400 mAh capacity sets the runtime ceiling; under continuous load the pack will reach its discharge limit and require recharging before other thermal or protection thresholds engage.

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