About this replacement
Asus ProArt StudioBook Pro X W730G5T Series — 11.48V Li-Polymer Replacement Battery (C32N1838)
This is an 11.48V, 8000mAh (91.84Wh) Li-Polymer battery for the Asus ProArt StudioBook Pro X W730G5T series. It fits the W730G5T-H8052R, W730G5T-H8050T, W730G5T-AV011T, W730G5T-AV009T, and over 20 additional W730G5T variants. OEM part numbers covered are C32N1838 and 0B200-03460100.
- W730G5T platform compatibility: Every W730G5T variant shares the same voltage rail, connector pinout, and BMS handshake protocol. The StudioBook Pro X uses a 3-cell Li-Polymer configuration with an EEPROM-coded BMS — any cell carrying C32N1838 talks to the BIOS without modification.
- Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on a W730G5T unit. The BMS reported state of charge accurately across the range, and the BIOS accepted the cell without throwing an unknown battery warning on the first boot.
- First-cycle recalibration on the W730G5T: After installing, run one full discharge down to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.
Why the W730G5T BIOS flags a new cell as poor health
The StudioBook Pro X stores battery health data in the EEPROM of the original cell. When you swap in a new cell, the BIOS compares current readings against that saved baseline and flags a mismatch as degraded health. This is a calibration gap, not a fault with the replacement cell. Running one full discharge-to-hibernate then a continuous charge to 100% rewrites the learn cycle data. After one or two full cycles, the BIOS health reading normalises.
Laptop shuts down at 20–30% after battery swap
This happens because the fuel gauge IC is still reading from the old cell's discharge curve. Under full CPU and display load, the W730G5T draws enough current to cause a rapid voltage drop in the new cell — the uncalibrated gauge hits its cutoff threshold early and triggers shutdown. The fix is forcing the fuel gauge IC to recalibrate: discharge to hibernate-cutoff under real load, not idle, then charge to 100% without interruption. After two full cycles under load, the gauge tracks accurately and the early shutdowns stop.