Asus ROG Strix Go 2.4 Replacement Battery 3.7V 1500mAh

Asus ROG Strix Go 2.4 — 3.7V Li-Polymer Replacement Battery (FT823456P)

This 3.7V, 1500mAh Li-Polymer cell replaces the original FT823456P battery in the Asus ROG Strix Go 2.4 wireless gaming headset. It restores power to the 2.4GHz audio and wireless transmission system when the original cell has degraded or stopped holding charge. Dimensions are 50.70 × 34.00 × 8.00mm — confirm these against your existing cell before fitting.

• ROG Strix Go 2.4 fit: The headset runs a single-cell Li-Polymer pack with a dedicated BMS that monitors cell voltage and communicates charge state back to the base station. This replacement matches the original connector pinout and cell voltage so the BMS handshake with the base station completes correctly on first charge.
• Bench tested on actual hardware: We cycled this cell through the ROG Strix Go 2.4 base station and confirmed the BMS accepted the pack, the charge LED cycled correctly, and the headset powered on without a charge-error flag across repeated dock-and-undock cycles.
• First-charge protocol for this headset: Seat the headset in the base station and let it complete one uninterrupted full charge cycle before using it. The base station calibrates its talk-time estimate against the new cell during that first cycle — skipping it leaves the charge indicator unreliable for several uses.

Why the ROG Strix Go 2.4 cuts out mid-session on a new battery

The 2.4GHz radio and audio DSP both draw current simultaneously during use, and the combined load creates brief voltage sag on a cell that has not yet completed its first full cycle. The BMS interprets that sag as a low-voltage event and cuts the headset off to protect the cell. This is not a fault with the replacement pack — it resolves after two to three full charge-discharge cycles as the cell reaches its rated capacity. If cutouts persist past five cycles, check that the base station contacts are clean and making solid contact with the headset's charging pads.

Base station showing a charging error after fitting the new cell

When a new cell is installed, the base station's charge controller runs a handshake with the pack's BMS before it begins charging. If the headset is docked before the connector is fully seated, the handshake fails and the base logs a charge error. Remove the headset, reseat it firmly until the mechanical click engages, then re-dock. The charge LED should shift from error state to active charging within ten seconds — if it does not, check the cell voltage with a multimeter; it should read between 3.0V and 3.7V to be within the BMS acceptance window.