Dell Precision 5750 Replacement Battery 11.4V 8000mAh

Dell Precision 5750 / XPS 17 9700 — 11.4V Li-Polymer Replacement Battery (XG4K6)

This 11.4V 8000mAh (91.2Wh) lithium-polymer battery replaces the original power cell in the Dell Precision 5750 and XPS 17 9700 series. It matches OEM part numbers XG4K6, F8CPG, and 01RR3. The Precision 5750 is a mobile workstation — the cell capacity and voltage rail need to match exactly to keep the BIOS satisfied and the system stable under sustained load.

• Precision 5750 and XPS 17 9700 shared platform: Both the Precision 5750 and XPS 17 9700 run the same 11.4V three-cell battery architecture, same connector pinout, and the same Dell BMS handshake protocol. One cell fits the full compatibility list without modification.
• Bench tested on actual hardware: We ran this cell through charge, discharge, and BMS communication checks on a Precision 5750. The BMS handshake completed cleanly, the EEPROM data transferred correctly, and charge regulation held steady to the BIOS charge limit without faults or error flags.
• First-cycle calibration on the Precision 5750: After installing, run a full discharge to hibernate cutoff — do not interrupt it — then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears on nearly every cell swap in this chassis.

Laptop shutting down at 20–30% shown after battery swap

The Precision 5750 draws hard on the cell when the CPU boosts and the display is at full brightness simultaneously. A new cell with an uncalibrated fuel gauge IC still reads the old discharge curve, so the reported percentage diverges from actual cell voltage. When the cell voltage drops below roughly 10.8V under that combined load, the BMS cuts power to protect the cell — even though the OS shows 25% remaining. The fix is two or three full discharge-to-hibernate and uninterrupted full-charge cycles to let the fuel gauge IC map the new cell's actual voltage curve.

BIOS reporting wrong Wh rating after replacement

Dell's BIOS reads the Wh rating from the battery's EEPROM — a value written by the cell manufacturer based on rated chemistry, not always the measured capacity of the exact cell installed. If the BIOS reports a figure that differs from the 91.2Wh on the label, that is an EEPROM-to-BIOS read difference, not a fault with the cell. The cell still holds and delivers its full rated capacity. You can verify actual cell capacity by running Dell's built-in battery diagnostic at boot (F12 → Diagnostics) and comparing the reported full charge capacity against 91.2Wh.