Product details
The HP TA03XL (aka CS03XL variant) battery is a 3‑cell, long‑life pack delivering ~11.4–11.55 V and 44–51 Wh, designed for HP’s premium business laptops and mobile workstations. It fits the following models:
️ Compatible Models
EliteBook / ProBook / ZBook (G4 generations)
- EliteBook 745 G4 & 755 G4
- EliteBook 840 G4, 848 G4, and 850 G4
- ZBook 14u G4 and 15u G4 Mobile Workstation
(covers both Athlon/Ryzen 745 and Intel 855 series)
ProBook 440 G6 & 450 G6
- Also compatible with ProBook 440 G6 and 450 G6
Battery Specs & Part Numbers
- Voltage: ~11.4–11.55 V
- Capacity: ~44–51 Wh (≈4,400–4,860 mAh)
- OEM Part Numbers: TA03XL, CS03XL, HSTNN‑IB7L, HSTNN‑172C‑4, HSTNN‑175C‑5, HSTNN‑I72C‑4, HSTNN‑I75C‑5, 854047‑1C1/‑271, 854108‑850, 800513‑001 etc.
✅ Short Compatibility Overview
| Laptop Series | Specific Models |
| EliteBook G4 | 745 G4, 755 G4, 840 G4, 848 G4, 850 G4 |
| ProBook G6 | 440 G6, 450 G6 |
| ZBook 14u/15u G4 | G4 mobile workstation models |
If you own one of these G4 era (2017–2018) HP business/mobility laptops, the TA03XL/CS03XL battery is the official OEM model:
- EliteBook: 745 G4, 755 G4, 840 G4, 848 G4, 850 G4
- ProBook: 440 G6, 450 G6
- ZBook: 14u G4, 15u G4
