About this replacement
HP ProBook 4410s / 4415s Series — 10.8V Li-ion Replacement Battery (513128-251)
This is a 10.8V, 4400mAh (47.52Wh) Li-ion replacement battery for the HP ProBook 4410s, 4411s, 4415s, and 4416s notebooks. It cross-references OEM part numbers 513128-251, 513128-361, 535806-001, HSTNN-DB90, HSTNN-XB90, and NZ374AA. The battery slots into the standard bay and communicates with the ProBook's BIOS over the SMBus charge line.
- ProBook 4410s / 4411s / 4415s / 4416s fit: These four models share the same 10.8V three-cell rail, identical connector pinout, and the same SMBus BMS handshake protocol — one cell works across the range without firmware differences.
- Bench tested on actual hardware: We ran this cell on a ProBook 4415s under CPU stress plus display at full brightness. The BMS held voltage above 10.2V throughout the discharge cycle and tripped into protect at 9.6V as expected — no premature cutoff.
- First-cycle calibration on the 4410s: After fitting, run the laptop unplugged until it hibernates on low battery, then charge uninterrupted to 100%. This forces the ProBook's BIOS battery learn cycle to reset against the new cell's actual capacity and clears the inaccurate health warning that appears after every cell swap.
BIOS reporting poor battery health immediately after fitting a new cell
The ProBook BIOS reads health data from the battery's EEPROM, not from live voltage measurements. When a new cell ships, its EEPROM holds factory baseline data that doesn't match the ProBook's stored charge history for the old battery. The BIOS flags this mismatch as degraded health — even though the cell is new. Running one full discharge-to-hibernate cycle followed by a full uninterrupted charge rewrites the learn data and clears the warning.
ProBook 4410s shutting down abruptly at 20–30% charge shown
This happens when the fuel gauge IC's calibration is still mapped to the old cell's voltage curve. The gauge reads 25% remaining, but the new cell's actual voltage under full CPU plus display load drops sharply — hitting the BMS low-voltage cutoff before the displayed percentage reaches zero. It is a calibration gap, not a faulty cell. Run two or three complete discharge-to-hibernate then charge-to-100% cycles to let the fuel gauge IC re-map against the new cell. After calibration, the BIOS fuel gauge tracks accurately down to the BMS cutoff at 9.6V.