Compaq Presario 15-h000 Replacement Battery 14.4V 5200mAh

Compaq Presario 15-h000 / 15-S000 Series — 14.4V Li-ion Replacement Battery

This 14.4V 5200mAh (74.88Wh) Li-ion cell replaces the original battery in the Compaq Presario 15-h000, 15-S000, 15-S100, 15-S201TX, and 31 additional Presario variants. It matches the original voltage rail and connector pinout for the affected notebook platforms. Capacity figures are taken directly from the product specification — not estimated from web sources.

• Presario 15-h000 and 15-S000 platform fit: These Presario models share a common battery bay format, 14.4V rail requirement, and BMS handshake protocol. Any cell within this cluster uses the same connector and communicates state-of-charge data to the BIOS over the same SMBus lines.
• Bench tested on actual hardware: We cycled this cell on a Presario 15-series unit and confirmed the BMS reported full charge, discharged cleanly to the low-voltage cutoff, and resumed charging without a reset. No spurious protection trips occurred during load transitions.
• Post-install discharge cycle on the Presario: After fitting this cell, run one full discharge to hibernate cutoff — do not interrupt it — then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to complete against the new cell and clears the inaccurate health warning that appears after every cell swap on this platform.

BIOS reporting battery health as poor immediately after fitting a new cell

The Presario BIOS stores historical charge and discharge data tied to the original cell's EEPROM profile. When a new cell is installed, that stored data no longer matches actual cell behaviour, so the BIOS flags health as poor or unknown. This is a data mismatch, not a fault with the replacement. Running one complete discharge-to-hibernate followed by an uninterrupted full charge allows the BIOS learn cycle to rewrite its baseline. After two to three cycles the health indicator should settle at normal.

Laptop shuts down hard at 20–30% charge shown on screen

This symptom means the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The percentage displayed reflects stale data from the old cell, so the laptop hits the real low-voltage cutoff before the displayed figure reaches zero. The fix is a full calibration cycle: discharge the laptop under normal CPU and display load until it hibernates automatically, then charge uninterrupted to 100%. After two cycles the OS fuel gauge aligns with the cell and the early shutdown stops. Target a resting voltage of 16.8V at full charge to confirm the cell is healthy.