ATC 10.8V New 6 Cell Laptop/Notebook Battery for Gateway 6000, 6500, 8500, M460, M680, MX6000, MX6100, MX6200, MX6400, MX8500, NX500, NX550 Series, S-7500N Series, S-7700 series,PN:6MSB, 8MSB, 6MSBG, 8MSBG, 916C3360F, 916C4720F(6-Cells,4800 Mah)