HP 640 G3 Battery

Key Specifications

• Model / Part Numbers: CI03, CI03XL, CI03048XL, HSTNN‑UB6Q, 801554‑001, T7B31AA, 801517‑421/541/831 HP 

•  6‑cell Lithium‑Ion (Li‑Ion)

• Voltage: 11.4 V nominal (equivalent to 11.1 V rating)

• Capacity: 48 Wh (~4,210 mAh) 

•  Compatibility

• Designed for HP ProBook 640 G3, and also compatible with 640 G2, 650 G2/G3, 645 G2/G3, and 655 G3 

• Compatible HP product numbers include: X4J21AV (640 G3), Z2W97ET.

Runtime

• Typical runtime: ~1.5–2 hours for moderate use when new (e.g. basic productivity, office apps)

• Standby reserve: ~2.5–3 hours

• Real-world usage (light tasks, lower brightness): up to ~3 hours or more depending on device configuration and power settings.

 Safety & Warranty

• Built-in smart protections:

  • Overcharge, over-discharge, thermal shut-off, short‑circuit protection, cell balancing

• Quality standards: OEM or OEM-equivalent design, safe and certified for use in HP models

• Warranty:

  • Typically 6‑month (for OEM replacements)