Schenker XMG Core 15 Replacement Battery SQU-1609 11.4V 7100mAh

Schenker XMG Core 15 — 11.4V Li-Polymer Replacement Battery (SQU-1609)

This is an 11.4V, 7100mAh (80.94Wh) Li-Polymer battery for the Schenker XMG Core 15 and XMG Core 15 GK5CP6V laptops. It replaces OEM part SQU-1609 when the original cell degrades or fails to hold charge under load. Voltage, connector, and BMS communication lines match the factory spec for these models.

• XMG Core 15 and GK5CP6V compatibility: Both the XMG Core 15 and GK5CP6V share the same 11.4V three-cell architecture, connector pinout, and BMS handshake protocol. One replacement covers both configurations — no adapter or firmware change needed.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the XMG Core 15 platform. The BMS negotiated correctly with the EC firmware, reported accurate state-of-charge, and held voltage steady through CPU and GPU combined load spikes.
• First-cycle calibration on XMG Core 15: After installing, run one full discharge down to hibernate-cutoff, then charge uninterrupted to 100% without interruption. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap — it is not a fault.

BIOS reporting poor battery health immediately after fitting the SQU-1609

The XMG Core 15 BIOS reads health data from an EEPROM register that the old cell wrote during its lifetime. A fresh cell arrives with different EEPROM values, so the BIOS flags it as degraded even though the capacity is full. This is a data mismatch, not a hardware fault. Running one complete discharge-to-hibernate followed by a full uninterrupted charge allows the EC to rewrite those registers against the new cell. After that cycle, health status returns to normal.

Laptop shuts down at 20–30% charge shown on new battery

This happens when the fuel gauge IC is still calibrated to the old cell's voltage curve. The new Li-Polymer cell has a steeper voltage cliff in the lower charge range, so the OS reads 25% when the cell is already near its cutoff threshold. The system shuts down to protect the cell before the gauge catches up. Complete two full discharge-charge cycles without interrupting charge, and the fuel gauge IC will remap its curve to the new cell's actual discharge profile. If it persists after two cycles, check that BIOS charge control is not set to a custom lower cutoff — reset it to 100% in the BIOS power settings.