About this replacement
Asus ROG Flow Z13 GZ301 Series — 15.52V Li-Polymer Replacement Battery (C41N2102)
This is a 15.52V, 3510mAh (54.48Wh) Li-Polymer battery for the Asus ROG Flow Z13 2-in-1 gaming laptop. It fits the GZ301, NR2201, and NR2201ZE families and matches the OEM part numbers C41N2102 and 0B200-04100000. Verify your model number on the underside of the unit before ordering.
- GZ301 and NR2201 platform fitment: These models share the same 15.52V four-cell Li-Polymer architecture, the same board-side connector, and the same BMS handshake protocol — which is why one cell serves the entire GZ301 and NR2201 line.
- Bench tested on actual hardware: We cycled this cell on a GZ301ZM under sustained gaming load. The BMS held charge acceptance cleanly, thermal sensors reported within spec, and the protection circuit tripped correctly at low-voltage cutoff without nuisance shutdowns.
- Post-install BIOS recalibration: After fitting, run the laptop down to hibernate-cutoff under load — not screen-off idle — then charge uninterrupted to 100%. This forces the fuel gauge IC to map its capacity curve against the new cell and clears the inaccurate health warning the BIOS throws after every cell swap.
Why the ROG Flow Z13 shuts down at 20–30% remaining after a battery swap
The Z13's fuel gauge IC retains learned discharge curves from the old, degraded cell. When a new cell is installed, the IC maps fresh voltage against stale data — so it reads 25% when the actual state of charge is much higher, then hits its cutoff threshold prematurely. The fix is a full learn cycle: discharge under CPU and display load to hibernate, then charge to 100% without interruption. After two or three cycles the fuel gauge re-aligns and the premature shutdowns stop.
BIOS reporting battery health as "poor" or "replace" immediately after fitting a new cell
The Z13 BIOS reads health data from the cell's EEPROM, which stores cycle count, rated Wh, and condition flags. A brand-new cell has a fresh EEPROM — the BIOS interprets unfamiliar data as an unknown or degraded source and flags it accordingly. This is a data-handshake issue, not a fault with the replacement cell. Run one full discharge-to-hibernate and uninterrupted charge-to-100% cycle; most GZ301 units clear the warning after the first completed learn cycle.