HP PR06 High-Quality Replacement Laptop Battery (10.8V – 11.1V / 4400mAh)
The HP ProBook 4540s replacement laptop battery provides a highly dependable, premium power storage backup to ensure seamless performance for your durable business notebooks and rugged enterprise computing platforms. Moreover, its optimized 6-cell high-capacity matrix architecture and stable 10.8V to 11.1V internal configuration deliver consistent voltage deployment to keep your device running smoothly during intensive workplace multitasking, commercial layout configurations, or daily studying. Consequently, this high-density lithium-ion rechargeable heavy-duty pack serves as an affordable, cost-effective alternative to instantly restore your laptop original off-grid mobility profile. Therefore, you can safely continue your everyday computational tasks immediately after a simple plug-and-play setup without experiencing sudden system power failures. Furthermore, advanced protective circuits are natively integrated to safeguard your system against hazardous short-circuits and overcharge risks.
■ Technical Specifications
| Battery Model Designation | HP PR06 / PR09 Replacement Battery |
| Cell Quality Class | Premium Grade-A Replacement Cells |
| Cell Architecture | Lithium-ion (Li-ion) | 6-Cells High-Performance Design |
| Voltage Profile | 10.8 Volts DC (Fully compatible with 11.1V) |
| Total Capacity Volume | 4400 mAh / ~48Wh Core Matrix |
| Safety Architecture | Built-in Multi-Layer Safety Shield (Overcharge, Over-discharge, Overheating & Short-Circuit Safeguards) |
| Replacement Warranty | 3-Month Quality Guarantee Protection |
■ Confirmed Laptop Compatibility List
- • HP ProBook 4530s / 4535s Series
- • HP ProBook 4540s / 4545s Series
- • HP ProBook 4430s / 4431s / 4435s / 4436s Series
- • HP ProBook 4440s / 4441s / 4445s / 4446s Series
- • HP ProBook 4330s / 4331s Series
- • HP ProBook 4730s / 4740s Series
- • Part Numbers: PR06 / PR09 / PRO6 / PRO9 / QK646AA
- • Official Factory Codes: 633805-001 / 633733-1A1 / 650938-001
- • Compatible Chassis Codes: HSTNN-LB2R / HSTNN-I97C-3 / HSTNN-I97C-4
- • Alternate Designations: HSTNN-I99C-3 / HSTNN-I99C-4 / HSTNN-IB2R / LC32BA122
Important Care Tip: To safeguard your brand new replacement battery lifecycle, remember to avoid letting the system power level drain completely to a 0% limit before initiating a safe charge cycle.

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