About this replacement
HP ProBook 4510s / 4710s Series — 14.4V Li-ion Replacement Battery (HSTNN-IB88 / 572032-001)
This is a 14.4V, 6600mAh (95.04Wh) lithium-ion replacement battery for the HP ProBook 4510s, 4515s, 4710s, and 4720s. It cross-references a wide range of HP OEM part numbers including HSTNN-IB88, HSTNN-XB88, 572032-001, 535753-001, 591998-141, and NZ375AA, among others. It fits the standard battery bay on these ProBook models with no modification required.
- ProBook 4510s / 4515s / 4710s / 4720s compatibility: These four ProBook models share the same 14.4V battery bus, identical connector pinout, and BMS handshake protocol — which is why one cell pack covers all of them. The BIOS on each platform reads charge state and health data from the same EEPROM register set.
- Bench tested on actual hardware: We ran this cell on a ProBook 4510s and 4710s chassis. The BMS completed the charge handshake without fault codes, and the BIOS recognised the pack as a valid HP battery. Discharge curves stayed within spec through the full voltage range down to cutoff.
- First-cycle calibration on ProBook firmware: After installing, let the laptop discharge fully until it hibernates on its own, then charge uninterrupted to 100% without interruption. This forces the ProBook's fuel gauge IC to re-learn the new cell's actual capacity and clears the inaccurate "battery health poor" warning that commonly appears after a cell swap.
Why the ProBook 4510s BIOS reports poor battery health immediately after replacement
The ProBook's BIOS reads health data from the battery's EEPROM — a small memory chip embedded in the pack. When you install a new cell, the EEPROM contains factory-default values that don't match what the BIOS last recorded from the old battery. The mismatch triggers a "Battery check recommended" or "Primary battery has failed" alert even on a brand-new pack. Running one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100% allows the fuel gauge IC to write accurate capacity data back to the EEPROM. After that cycle, the BIOS health warning clears on its own.
ProBook 4510s shutting down at 20–30% battery shown on screen
This happens when the fuel gauge IC is still calibrated to the old battery's degraded discharge curve. The gauge reads 20–30% remaining, but the cell voltage under full CPU and display load has already dropped below the BMS's cutoff threshold — so the laptop shuts down without warning. It is not a fault with the new cell. Charge the laptop fully, then run a deliberate full discharge in one session under normal workload to let the fuel gauge IC map the new cell's actual voltage cliff. After one or two of these calibration cycles, the percentage reading at shutdown should align with reality, with cutoff occurring below 5%.