HP Probook 4510s Replacement Battery 14.4V 4400mAh HSTNN-IB88

HP ProBook 4510s / 4710s / 4720s — 14.4V Li-ion Replacement Battery (HSTNN-IB88)

This 14.4V Li-ion battery replaces the original cell in the HP ProBook 4510s, 4515s, 4710s, and 4720s business laptops. It runs at 4400mAh (63.36Wh) and mates to the same connector and BMS handshake points as the factory pack. If your original HSTNN-IB88 or 572032-001 pack no longer holds a charge, this is the direct swap.

• ProBook 4510s / 4515s / 4710s / 4720s compatibility: These four models share the same 14.4V power rail, identical dock connector pinout, and the same BMS communication protocol over the SMBus line — which is why a single cell works across all of them without firmware conflict.
• Bench tested on actual hardware: We cycled this pack on a ProBook 4510s and logged the BMS charge and discharge behaviour. The protection circuit handled full-load CPU and display draw without tripping, and charge termination fired correctly at 16.8V cell peak.
• Post-install calibration on ProBook units: After fitting this cell, run the laptop down to hibernate cutoff on battery power alone, then charge uninterrupted to 100%. This one full cycle resets the BIOS battery learn cycle and clears the inaccurate health warning that almost always appears after a cell swap on ProBook hardware.

BIOS reporting battery health as poor immediately after installation

The HP ProBook BIOS reads health data from the battery's EEPROM on first contact. The new cell ships with factory EEPROM values that do not match the usage history the BIOS expects to see, so it flags the pack as degraded or unknown — even though the cell is fresh. This is a data mismatch, not a battery fault. Running a full discharge-to-hibernate followed by a full uninterrupted charge forces the BIOS to rewrite its internal battery learn table against the new cell's actual capacity curve. After that single calibration cycle, the health warning clears on most ProBook 4510s and 4720s units.

Laptop shuts down at 20–30% remaining after the battery swap

This happens because the fuel gauge IC is still using the old cell's voltage-to-capacity curve to estimate remaining charge. The new cell has a steeper voltage cliff under full CPU and display load, so the laptop hits its hardware cutoff voltage while the OS is still showing 20–30% on screen. It is a calibration gap, not a defective pack. Run two or three full discharge cycles — down to hibernate cutoff each time, then charge to 100% — and the fuel gauge IC will re-map its curve against the new cell. After calibration, the reported percentage and actual cutoff align within a few percent.