This is a Brand New Gateway Original ProductRestore your computers original battery life with a fresh replacement battery. Enjoy the running time you had when your computer was new. Compatible Models: Gateway M Series: M360, M460, M680. Gateway NX Series: NX500, NX550, NX850, NX860. Gateway MX Series: MX6000, MX6100, MX6400, MX6600, MX8500. Gateway S Series: S-7700N, S-7710N, S-7500N, S-7510N...