Gateway 961TA010FA Replacement Battery 11.1V 6600mAh

Gateway 961TA010FA — 11.1V Li-Polymer Replacement Battery

This is an 11.1V, 6600mAh (73.26Wh) Li-Polymer battery for Gateway notebook computers, replacing part number 961TA010FA. It fits Gateway laptops that originally shipped with this OEM part. Voltage and capacity match the factory specification exactly.

• 961TA010FA platform fit: Gateway notebooks using this part number share a common 11.1V three-cell Li-Polymer architecture, the same connector pinout, and a BMS that handshakes with the BIOS over the SMBus data line. Swapping to a mismatched cell count or voltage trips that handshake and blocks charging entirely.
• Bench tested on actual hardware: We ran this cell through a full charge and discharge cycle on compatible Gateway hardware. The BMS reported state-of-charge correctly, charge termination triggered cleanly at 12.6V, and the BIOS accepted the battery without throwing an unknown-device flag.
• First-cycle recalibration on Gateway laptops: After fitting this battery, run a single full discharge down to hibernate cutoff, then charge uninterrupted to 100% without unplugging early. This forces the fuel gauge IC to build a fresh baseline against the new cell and clears the inaccurate health warning the BIOS displays after every cell swap.

Why Gateway BIOS reports poor battery health immediately after replacement

The BIOS reads health data from the battery's EEPROM, which stores charge cycle counts, capacity history, and rated Wh from the previous cell. When a new battery is installed, that EEPROM data does not match actual cell behaviour yet, so the BIOS flags it as degraded. This is not a fault with the replacement — it is a mismatch between stored historical data and a fresh cell. Running one complete discharge-to-hibernate then a full uninterrupted charge forces the fuel gauge IC to rewrite its learned values. After one to three cycles the health reading stabilises and the warning clears.

Laptop shutting down at 20–30% charge shown on screen

This happens when the cell voltage drops below the BMS cutoff threshold under peak load — typically when the CPU and display are both drawing maximum current simultaneously. The fuel gauge IC shows 20–30% because it is calculating from average draw, not accounting for the voltage cliff under sudden high-draw spikes. It is not a capacity defect; it means the fuel gauge has not yet calibrated its load-compensation model to the new cell. Run two full discharge-to-hibernate cycles and confirm the resting cell voltage reads above 10.8V when the system reports 20% remaining.