Dr. Battery
Dr. Battery MPL08251P-21 6 Cell 10.8V 4400mAh laptop battery
A 6-cell 10.8V 4400mAh lithium-ion replacement battery for HP ProBook 4330s, 4331s, 4430s, 4431s, 4435s, 4436s, 4440s, 4441s, 4446s, 4530s, 4535s, 4540s and 4545s 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 4530s and 4540s series models
- 6-cell lithium-ion design delivers 4400 mAh capacity
- 8 V output matches original battery specifications
- Built-in smart chip protects against short circuit and overheating
- Compatible with part numbers 633733-151 and 633805 series
Direct replacement for HP ProBook series
This 6-cell lithium-ion battery replaces original HP part numbers including 633733-151, 633733-241 and 633805 series units. It fits HP ProBook 4330s, 4331s, 4430s, 4431s, 4435s, 4436s, 4440s, 4441s, 4446s, 4530s, 4535s, 4540s and 4545s models. The pack is supplied new and carries a one-year warranty.
Voltage and capacity match the original
The unit delivers 10.8V and 4400 mAh, rated at 48 Wh, matching the electrical specification of the factory battery. A built-in smart control chip manages charging and provides short-circuit, overheat and overload protection. Buyers who need a different voltage or a higher capacity pack should look elsewhere.
Sustained discharge is managed by the onboard
The smart chip regulates current flow during extended use, preventing overload and overheating that can cut runtime short. Protection circuits maintain stable output over long sessions rather than allowing peak current to degrade. Users who require continuous high-draw operation beyond the cell rating should verify suitability.
Highlights
- Replaces HP ProBook 4530s and 4540s series models
- 6-cell lithium-ion design delivers 4400 mAh capacity
- 8 V output matches original battery specifications
- Built-in smart chip protects against short circuit and overheating
- Compatible with part numbers 633733-151 and 633805 series
Specifications
| Brand | Dr. Battery |
|---|---|
| Model | MPL08251P-21 |
| Color | Black |
| Type | Battery |
| Compatibility | HP 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 Type | 6 Cell Lithium-Ion |
| Battery Voltage | 10.8V |
| Battery Capacity | 4400 mAh |
Questions about this item
How long will the 4400 mAh capacity actually run my ProBook 4540s?
The 48 Wh rating translates to roughly three to four hours of typical office work on a 10.8 V system, though screen brightness and background tasks will shift the real figure.
Does the built-in smart control chip limit charging speed or voltage?
The chip manages charge current to protect the cells and enables short-circuit, overheat and overload safeguards; it does not impose an artificial voltage ceiling beyond the 10.8 V specification.
Will this 6-cell pack physically latch into my ProBook 4331s without modification?
Yes — the pack matches the original HSTNN-I97C-4 form factor and locks into the same battery bay used by the 4330s, 4430s and 4530s series.
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