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 6-cell lithium-ion laptop battery with label showing 10.8V 4400mAh

Dr. Battery

Dr. Battery MPL08251P-17 6-cell 10.8V 4400mAh laptop battery

SKU CH-9SPG-3Y8V7

Replacement 6-cell lithium-ion battery delivering 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
  • Replaces HP ProBook 4430s 4435s 4440s 4530s 4535s models
  • 6-cell lithium-ion design delivers 4400mAh capacity for extended runtime
  • 8V output matches original 633733-151 633733-241 part numbers
  • Smart chip enables overcharge overheat and overload protection
  • Dr. Battery brand established 2006 with one-year manufacturer warranty

Dr. Battery 6-Cell 10.8V Replacement

The Dr. Battery MPL08251P-17 is a 6-cell lithium-ion unit rated at 10.8V and 4400mAh. It replaces original HP part numbers including 633733-151 and 633805 series batteries. Compatible models cover HP ProBook 4330s through 4545s series laptops. This new battery targets owners needing a direct swap for depleted OEM packs.

Sustained Discharge and Protection Behaviour

A built-in smart control chip manages charging current and discharge cycles to extend usable runtime per charge. The circuitry activates short-circuit, overheat and overload safeguards during continuous operation. These protections maintain stable output voltage under load rather than allowing thermal throttling or sudden shutdown. Cell balancing across the six lithium-ion cells supports consistent capacity delivery.

OEM Voltage and Form-Factor Constraints

The 10.8V nominal voltage must match the original battery label exactly; mismatched voltage will prevent proper charging or damage the laptop. Physical dimensions and connector pinout follow the HSTNN-Q88C and HSTNN-XB2E specifications used across the listed ProBook models. Buyers must verify their original battery part number against the 633733 and 633805 series before installation. Systems requiring higher capacity packs or different voltages are not supported.

Highlights

  • Replaces HP ProBook 4430s 4435s 4440s 4530s 4535s models
  • 6-cell lithium-ion design delivers 4400mAh capacity for extended runtime
  • 8V output matches original 633733-151 633733-241 part numbers
  • Smart chip enables overcharge overheat and overload protection
  • Dr. Battery brand established 2006 with one-year manufacturer warranty

Specifications

BrandDr. Battery
ModelMPL08251P-17
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

Does the 6-cell 10.8 V 4400 mAh pack generate noticeable heat or fan noise during long work sessions?

The lithium-ion cells run at the rated 10.8 V with a 48 Wh capacity; they produce only normal warmth and no audible noise because the pack has no moving parts.

What must my HP ProBook already have so this MPL08251P-17 fits and charges correctly?

Your laptop must use one of the original part numbers such as 633733-151, 633733-241, 633733-251 or 633805-0 and accept a 10.8 V 6-cell battery.

Will this replacement work alongside the original charger and docking station I kept from my 4430s?

Yes, the pack matches the 10.8 V specification used by the 4430s, 4435s, 4530s and other listed models, so existing chargers and docks remain compatible.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.