HP SN03XL Original Battery

Core Specifications

• Part Numbers: SN03XL, ST03XL
• Alternative OEM markings include HSTNN‑DB6V, HSTNN‑L42C, HSTNN‑UB6T, 800232‑241/271/541, 800514‑001, 854109‑850, 821691‑001, among others 
• Chemistry: Lithium‑Ion (Li‑Ion), 3‑cell pack at 11.4 V 
• Capacity: Typically 44 Wh (~3,780 mAh) Some sources list 42.2 Wh (~3,700 mAh) 
• Expected Runtime: Approximately 1.5–2 hrs of active use, and 2.5–3 hrs standby, per manufacturer specs
• Warranty: Ranges from 6 months to 12 months, depending on vendor .

Compatibility

• HP EliteBook series: 820 G3, 820 G4, 725 G3, 725 G4

Safety Features & Quality Assurance

• Integrated overcharge, over-discharge, short-circuit, and thermal protection circuits 
• CE/FCC/RoHS certifications ensure compliance and safety
• Genuine HP branding ensures compatibility; third-party cells may trigger BIOS warnings (e.g., "Non‑HP Battery detected")

Installation & Maintenance

Initial calibration steps:

Fully charge (approx. 3 hrs for first use), discharge to ~10%, repeat 3 cycles 

Ongoing calibration: Recommended every 2–3 months .

Temperature cautions: Charge and operate at room temperature; avoid high heat .

Installation advice:

Power down the laptop, disconnect, remove old battery, connect new one securely