About this replacement
Asus ROG Strix GM501GM-EI017T — 15.4V Li-Polymer Replacement Battery (C41N1727)
This 15.4V, 3550mAh (54.67Wh) Li-Polymer battery replaces the C41N1727 cell in the Asus ROG Strix GM501 series gaming laptops. It fits the GM501GM-EI017T, GM501GM-EI007T, GM501GS-EI017T, GM501GS-XS74, and over 30 additional GM501 variants. The 4-cell configuration matches the original voltage rail and connector pinout exactly.
- GM501 series compatibility: Every GM501 variant on the fit list shares the same 15.4V four-cell architecture, connector housing, and BMS communication protocol — so one cell works across the entire platform without modification.
- Bench tested on actual hardware: We ran this cell on a GM501GM under sustained CPU and GPU load. The BMS held the charge curve steady through full draw cycles, with no overcurrent trip or thermal cutoff during stress testing.
- Post-install discharge cycle: After fitting this cell, run the laptop on battery until it hibernates at cutoff, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears after every cell swap.
BIOS reporting poor battery health immediately after installation
The GM501's BIOS reads EEPROM data from the installed cell to calculate health status. When a new cell goes in, the EEPROM values don't match the BIOS's learned baseline from the old battery, so Windows and the BIOS both flag the replacement as degraded — even though it's brand new. This isn't a fault with the cell. Running one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100% rewrites the learn cycle baseline. After two to three full cycles, the BIOS health readout will normalise to reflect actual cell capacity.
Laptop shutting down at 20–30% charge shown on screen
This happens when the fuel gauge IC hasn't calibrated against the new cell's actual discharge curve. The GM501 draws hard under gaming load — full CPU plus display plus dGPU simultaneously — and if the fuel gauge IC is still referencing the old cell's voltage-to-capacity map, it misjudges the voltage cliff. The laptop shuts off before the displayed percentage reaches zero. To fix this, run two to three full discharge-to-cutoff cycles so the fuel gauge IC can build an accurate map of the new cell's voltage curve. After calibration, shutdowns at 20–30% stop and the displayed percentage tracks real remaining capacity correctly.