Schenker XMG C404 Replacement Battery 11.1V 4200mAh 961TA002F

Schenker XMG C404 — 11.1V Li-Polymer Replacement Battery (961TA002F)

This 11.1V, 4200mAh (46.62Wh) Li-Polymer cell replaces the original battery in the Schenker XMG C404 gaming and workstation laptop. It matches the OEM part numbers 961TA002F and GNC-C30. Physical dimensions are 216.86 × 94.36 × 10.50mm — confirm against your existing cell before fitting.

• XMG C404 platform fit: The C404 uses a three-cell Li-Polymer pack at 11.1V nominal. This replacement carries the same voltage rail and connector pinout, so the system board and charge controller recognise it without firmware modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the XMG C404 platform. The BMS handshake completed correctly, charge current ramped to the expected rate, and the protection circuit tripped at the correct low-voltage cutoff threshold.
• Post-install calibration on the XMG C404: After fitting, run one full discharge down to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning the firmware triggers after every cell swap.

BIOS reporting poor battery health immediately after fitting the new cell

The XMG C404 BIOS reads health data from the battery's EEPROM registers, which are populated with the old cell's cycle count and degradation history. A brand-new cell ships with fresh EEPROM data, but the BIOS compares it against its stored baseline and flags a mismatch as poor health. This is a firmware interpretation issue, not a fault with the replacement cell. Run the full discharge-to-hibernate and uninterrupted recharge cycle once — the BIOS learn cycle rewrites its baseline and the warning clears.

XMG C404 shuts down abruptly at 20–30% charge shown on screen

This happens when the cell voltage drops below the BMS cutoff threshold under sustained CPU and display load, even though the OS fuel gauge still shows 20–30% remaining. The fuel gauge IC has not yet calibrated its state-of-charge model against the new cell's actual discharge curve. After the first complete discharge-to-hibernate cycle, the fuel gauge recalculates. If shutdown still occurs at a similar state of charge after two calibration cycles, check that the open-circuit voltage at the reported cutoff point is above 9.5V — below that, the cell itself warrants inspection.