Compaq Business Notebook 6715b 10.8V Replacement Battery 360483-001

Compaq Business Notebook 6715b — 10.8V Li-ion Replacement Battery (360483-001)

This is a 10.8V, 4400mAh (47.52Wh) Li-ion battery for the Compaq Business Notebook 6715b and a wide range of compatible HP/Compaq business notebook platforms including the NX6325, NX6110/CT, and NX6140 series. It covers over three dozen OEM part numbers, including HSTNN-DB05, HSTNN-IB05, PB994A, and 365750-001. Physical dimensions are 203.60 × 53.60 × 20.40mm — confirm your bay dimensions before installing.

• Multi-model coverage across NX and 6000 series: These platforms share the same 10.8V three-cell-pair architecture, connector pinout, and BMS communication protocol — which is why a single cell pack covers models from the NX6110/CT through to the 6715b without modification.
• Bench tested on actual hardware: We ran this cell on a 6715b unit under combined CPU and display load. The BMS held steady voltage across the discharge curve with no mid-session cutoff, and charge termination triggered correctly at full capacity without overrun.
• Post-install calibration for the 6715b: After fitting this cell, run a full discharge until the laptop hibernates, then charge uninterrupted to 100% without interruption. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.

BIOS reporting poor battery health immediately after replacement

The 6715b BIOS reads health status from EEPROM data written by the original cell during its service life. A new cell arrives with a fresh EEPROM, and the BIOS interprets the mismatch as a fault rather than a replacement. This is not a defect in the new battery. Run one complete discharge-to-hibernate cycle followed by an uninterrupted full charge, and the BIOS learn cycle will rewrite its reference data against the new cell's actual characteristics. After two or three full cycles, the health indicator normalises.

Laptop shuts down at 20–30% charge shown on the gauge

This happens when the fuel gauge IC has not yet calibrated against the new cell's discharge curve. The gauge was mapped to the old cell's worn voltage profile, so it misreads the new cell's voltage cliff — the point where voltage drops steeply under full CPU and display load — as a genuine empty state. The laptop hits its low-voltage shutdown threshold while the gauge still shows charge remaining. Force two full discharge-to-hibernate cycles back-to-back, charging to 100% between each, to let the fuel gauge IC resync its internal model to the new cell. After the second cycle, shutdown should track accurately to below 5% indicated.