About this replacement
Asus UX560UQ / Q534UX-B Series — 15.2V Li-Polymer Replacement Battery (C41N1533)
This is a 15.2V, 3300mAh (50.16Wh) lithium-polymer battery for the Asus UX560UQ, Q534UX-B, Q534U, Q524U, and related models. It replaces OEM part numbers C41N1533 and 0B200-02010200. The cell sits in a 4-cell configuration and connects directly to the existing harness on compatible UX560 and Q534 boards.
- UX560 / Q534 platform fit: These models share the same 15.2V four-cell Li-Polymer rail, identical connector pinout, and the same BMS handshake protocol — which is why one cell part number covers the full cluster. The BMS communicates with the BIOS over SMBus, so physical fit and electrical match both matter.
- Bench tested on actual hardware: We ran this cell on a UX560UQ board and confirmed the BMS completed the SMBus handshake without error, charge current ramped normally through CC/CV stages, and the BIOS accepted the cell without throwing an unknown-device flag.
- Post-swap learn cycle on the UX560UQ: 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.
BIOS reporting battery health as "poor" or "replace" after a new cell install
The UX560UQ BIOS reads health data from the battery's EEPROM, which stores cycle count and rated capacity from the previous cell. When you install a new cell, the BIOS compares stored EEPROM values against live readings and flags a mismatch as poor health. This is not a fault with the new battery — it is stale data from the old cell. Run one complete discharge-to-hibernate then a full uninterrupted charge to 100%. The BIOS rewrites the learn cycle data and the health warning clears.
Laptop shuts down at 20–30% shown on the fuel gauge after the swap
This happens because the fuel gauge IC is still calibrated to the old cell's discharge curve. Under combined CPU and display load, the new cell hits a voltage point the fuel gauge misreads as 20–30% remaining, but the BIOS sees the actual cell voltage drop below the cutoff threshold and forces shutdown. The fix is two to three full discharge and charge cycles so the fuel gauge IC re-maps its model to the new cell's actual chemistry. After calibration cycles, the reported percentage will track the real state of charge accurately down to the correct cutoff voltage.