Seidio BACY35SSGNG-GY Innocell 3500mAh Super Extended Life Battery for Samsung Galaxy NEXUS (GSM) - Retail Packaging - Gray Comes with a gray replacement door featuring Seidio's signature soft touch coating Keeps your phone charged and ready to go, even with heavy phone and data usage Capacity: 3500mAh We recommend that you leave the battery/your phone on the charger for an additional 2-3 hours after the charging indicator turns green or the battery status shows full For use with Samsung Galaxy Nexus (GSM)