About this replacement
Asus ZenBook Pro UX501J / UX501L / N501VW — 11.4V Li-Polymer Replacement Battery (C32N1415)
This is an 11.4V, 8200mAh (93.48Wh) Li-Polymer battery for the Asus ZenBook Pro UX501J, UX501L, and N501VW series laptops. It replaces OEM part numbers C32N1415 and 0B200-01250000. Fit the battery when the original no longer holds charge or fails to register in the BIOS.
- UX501 and N501VW platform fit: These models share the same 11.4V three-cell Li-Polymer rail, identical connector pinout, and the same BMS handshake protocol — so one cell pack covers the full UX501 and N501VW lineup without modification.
- Bench tested on actual hardware: We ran this cell on a ZenBook Pro UX501J under combined CPU and display load. The BMS held the voltage rail steady through repeated high-draw cycles and triggered thermal cutoff only at the rated upper limit — no false trips.
- Post-install discharge cycle on the ZenBook Pro: After fitting, run the laptop from 100% down to hibernate cutoff without plugging in — do not interrupt. Then charge uninterrupted back to 100%. This resets the BIOS battery learn cycle and clears the false "poor health" warning that appears after every cell swap on this platform.
ZenBook Pro UX501 shutting down at 20–30% shown on screen
This is a voltage cliff — the cell voltage drops faster than the fuel gauge IC can track under combined CPU and 4K display load. At around 20–25% indicated, the actual cell voltage falls below the BMS cutoff threshold before the OS registers it. The fuel gauge IC needs two or three full discharge-charge cycles to recalibrate its model against the new cell chemistry. After those cycles, shutdowns at falsely high percentages stop.
BIOS reporting the replacement battery Wh rating as incorrect
The BIOS reads Wh data from the battery's EEPROM, which stores the rated capacity written at the factory. If the EEPROM value differs from what the BIOS expects — common after a cell swap — system info may show a mismatched Wh figure. This is an EEPROM data mismatch, not a cell fault. Run a full discharge-to-hibernate then a full uninterrupted charge; the BIOS battery learn cycle will update its stored value. After one complete cycle, recheck the Wh figure in MyASUS or the Windows power report — it should align with the rated 93.48Wh.