About this replacement
Asus ROG Strix G17 G712LW-EV251T — 15.4V Li-Polymer Replacement Battery (0B200-02940000)
This is a 15.4V, 4300mAh (66.22Wh) Li-Polymer battery for the Asus ROG Strix G17 G712LW-EV251T gaming laptop and compatible ROG Strix G models. It replaces OEM part numbers including 0B200-02940000, C41N1731-2, and C41POJ5. Dimensions are 186.60 × 115.00 × 10.00mm — verify your existing cell before ordering.
- ROG Strix G17 and G531/G731 platform fit: These models share the same 15.4V four-cell architecture, matching connector pinout, and BMS handshake protocol — which is why one cell covers the full range from G531GW through G712LW variants.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a G712 chassis. The BMS authenticated without error codes, charge acceptance was confirmed across all four cells, and voltage held steady under combined CPU and display load.
- Post-install calibration on ROG Strix: After fitting, discharge the laptop to automatic hibernate, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears after every cell swap on ROG Strix hardware.
BIOS reporting poor battery health immediately after fitting a new cell
The ROG Strix BIOS reads EEPROM data stored on the old cell and flags a health warning the moment a new cell without that history is detected. This is not a fault with the replacement — it is the firmware comparing an empty EEPROM against its stored baseline. Running one full discharge-to-hibernate followed by a complete uninterrupted charge resets the learn cycle. After two to three full cycles, the BIOS health indicator should update to reflect the actual cell condition.
Laptop shuts down at 20–30% charge shown on the ROG Strix G17
This happens when the fuel gauge IC is still calibrated to the old cell's discharge curve. The OS reads 25% remaining, but the actual cell voltage has already dropped below the BMS cutoff threshold under the combined load of the G17's CPU and display. The cell itself is not defective — the gauge just needs recalibration. Run three full discharge-to-hibernate and full charge cycles without interruption; after the third cycle, the OS fuel gauge re-anchors to the new cell's actual voltage floor, typically around 14.0V at low state of charge.