Asus ProArt StudioBook 17 C31N1834 Replacement Battery 11.55V

Asus ProArt StudioBook 17 W700G2T — 11.55V Li-Polymer Replacement Battery (C31N1834)

This is an 11.55V, 4800mAh (55.44Wh) Li-Polymer cell that replaces the original C31N1834 battery in the Asus ProArt StudioBook 17 and ProArt StudioBook Pro 17 series. It fits the W700G2T, W700G3T, H700, and over 44 confirmed model variants. The connector, BMS pinout, and cell dimensions (345.00 × 83.40 × 9.20mm) match the original bay exactly.

• W700 and H700 platform fit: All W700G2T and W700G3T variants share the same 11.55V three-cell architecture and C31N1834 part number. The BMS handshake and connector are identical across the H700 and W700 lines — one cell covers the full range without modification.
• Bench tested on actual hardware: We cycled this cell through full charge and load discharge on a W700G2T unit. The BMS engaged thermal and over-current protection correctly, and the cell held stable voltage through sustained CPU and GPU load without tripping cutoff prematurely.
• Post-install discharge cycle on the W700 series: After fitting, run the laptop on battery until it hibernates from depletion, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell's actual capacity curve — skipping it leaves the fuel gauge reporting inaccurate health or capacity warnings for weeks.

BIOS reporting poor battery health immediately after a cell swap on the W700G2T

The W700 series stores learned battery data in EEPROM on the system board. When a new cell goes in, the BIOS reads residual charge-cycle counts and degradation flags from the previous session and flags the new cell as poor health before it has ever been used. This is a firmware read issue, not a cell defect. Running one complete discharge-to-hibernate followed by an uninterrupted full charge forces the BIOS to rewrite the EEPROM data against the new cell. After that single calibration cycle, health reporting normalises.

Laptop shuts down at 20–30% battery shown after replacement

This happens when the fuel gauge IC has not been calibrated against the new cell's voltage curve. The IC still references the old cell's discharge profile, so it misreads voltage drop under load and triggers shutdown well before the cell is actually depleted. It is most visible during sustained Quadro GPU and CPU workloads, where current draw accelerates the voltage sag the IC misinterprets as empty. Run two full discharge-to-hibernate and uninterrupted charge cycles — after that, the fuel gauge tracks the new cell accurately and early shutdowns stop. The cell should sustain above 10.8V under full load before a genuine low-battery cutoff.