Replacement battery fits 8 Asus compatible models. Specifications: 1500mAh, 3.7V, Li-Polymer. Compatible with: Corsair HS75 XB, Edifier STAX Spirit S3, HyperX Cloud Orbit S, Turtle Beach XP510 RX, Alienware AW988, SteelSeries Arctis 9 and 2 more compatible models. Replaces: HyperX FT823456P, SteelSeries FT823456P, Asus FT823456P. Asus replacement battery designed for Headset devices.