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Product Overview
The HP HK04XL is a high-quality laptop battery officially specified for HP’s premium x360 series. It comes in two capacity options:
54 Wh (7.7 V, ~6 667 mAh) – a compatible OEM replacement value option
78 Wh (7.7–7.72 V, ~9 767 mAh) – a higher-end version built with premium Samsung Li-ion cells for extended runtime
Ensure you select the same capacity as your original battery—your laptop’s user manual confirms both capacities are supported on the 1040 G8 model.
Build Quality & Protection
Constructed with genuine lithium-ion/polymer cells, the HK04XL features internal circuits that protect against overcharge, over-discharge, short-circuit, over-current, and thermal runaway—making it as safe and reliable as the OEM original Laptop Battery.
Compatibility & Fit
Officially cross-referenced with HP part numbers L82391-005/-006/-007, HSTNN-IB9H, L79376-1B1/1B2, HK04054XL, the HK04XL is fully compatible with:
HP EliteBook x360 1030 G7
HP EliteBook x360 1030 G8
HP EliteBook x360 1040 G7
HP EliteBook x360 1040 G8
Key Specifications
Voltage - 7.7–7.72 V
Capacity - 54 Wh (~6 667 mAh) or 78 Wh (~9 767 mAh)
Cells - 4‑cell Li‑ion/Li‑Polymer
Compatibility - EliteBook x360 1030/1040 G7 & G8
Protection Circuit - Over-charge, over-discharge, short-circuit, thermal protection
Form Factor - OEM‑style direct replacement
The HP HK04XL battery offers a genuine specification match for EliteBook x360 1030/1040 G7 and G8 series.