About this replacement
Toshiba Satellite A60-S1591 — 14.8V Li-ion Replacement Battery (PA3382U-1BAS)
This is a 14.8V, 6600mAh Li-ion battery for the Toshiba Satellite A60 series laptops, including the A60-S1591, A60-S156, A60-743, and A60-662 among 34 additional models. It replaces OEM part numbers PA3382U-1BAS, PA3382U-1BRS, PA3384U-1BAS, PA3384U-1BRS, and PABAS052. Capacity is 97.68Wh — matching the original cell specification for this platform.
- Satellite A60 series compatibility: These models share a common 14.8V four-cell architecture, identical connector pinout, and the same BMS handshake protocol. A single battery fits across the range without hardware modification.
- Bench tested on actual hardware: We cycled this cell through full charge and discharge on the A60 platform. The BMS negotiated correctly with the system board, accepted charge from the AC adapter, and held voltage above the BIOS cutoff threshold across multiple cycles.
- First-cycle calibration on the A60: After installing, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100% without interruption. This forces the BIOS battery learn cycle to reset, clearing the inaccurate health warning that appears after every cell swap on this platform.
BIOS reporting poor battery health immediately after installation
The Satellite A60 BIOS reads health data stored in the battery's EEPROM from the previous cell. A new battery arrives with factory EEPROM values that don't match what the system logged for the old pack, triggering a false health warning. This is not a fault with the replacement cell. Run one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100% — the BIOS learn cycle will overwrite the stale EEPROM data and clear the warning.
Laptop shuts down abruptly while gauge still shows 20–30% remaining
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual chemistry curve. The gauge reads voltage incorrectly and reports capacity remaining while the cell has already dropped below the safe discharge threshold under full CPU and display load. The result is a hard shutdown with no warning. Run two to three complete discharge-to-hibernate and full-charge cycles — by the third cycle the fuel gauge IC recalibrates to the new cell and the reported percentage aligns with actual remaining voltage.