About this replacement
Dell XPS 15 9560 / Precision M5520 — 11.4V Li-Polymer Replacement Battery (6GTPY)
This is an 11.4V, 8000mAh (91.2Wh) Li-Polymer replacement battery for the Dell XPS 15 9560, XPS 15 9570, and Precision M5520. It slots into the same bay as the original 6GTPY cell and connects via the factory harness. No adapters or modifications needed.
- XPS 9560 / 9570 / Precision M5520 platform fit: These three models share the same 11.4V three-cell battery bay, identical connector pinout, and compatible BMS communication protocol — that is why one cell covers all of them. The 6GTPY part number appears across all three chassis in Dell's service manual.
- Bench tested on actual hardware: We ran this cell on an XPS 15 9560 and monitored BMS handshake via HWiNFO64. The BIOS recognised the cell, charge initiation completed without fault codes, and the protection circuit tripped correctly at full-cell voltage cutoff.
- Post-install calibration on the XPS 9560: After fitting, run the laptop down to hibernate cutoff on battery alone, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell's actual capacity and clears the inaccurate "consider replacing" health warning that appears after every cell swap on this platform.
Why the XPS 15 9560 shuts down at 20–30% after a battery swap
The XPS 9560's EC (embedded controller) stores discharge curve data from the old cell in EEPROM. When a new cell goes in, the stored curve no longer matches the actual voltage-to-capacity relationship of the fresh chemistry. Under sustained CPU plus display load, the EC sees a voltage drop it interprets as near-empty and triggers an emergency shutdown — even though the cell has real charge remaining. Running one full discharge-to-hibernate cycle followed by an uninterrupted full charge overwrites the stale curve data and resolves the premature cutoff. After two or three full cycles the fuel gauge IC recalibrates fully and the shutdowns stop.
BIOS reporting battery Wh as incorrect after installing a 6GTPY replacement
The Wh figure the BIOS displays is read from the battery's EEPROM chip, not calculated live from the cell. If the replacement cell's EEPROM was programmed with a different rated Wh value than your original, the system info screen will show a number that doesn't match the 91.2Wh spec. This is a data field mismatch, not a capacity fault — the cell still holds its full charge. To verify actual capacity, run a full discharge cycle and read the mWh discharged in HWiNFO64 or BatteryInfoView; it should land close to 91,200mWh on a new cell at room temperature.