Fliptroniks 2100 mAh Li-ion Battery For Samsung Galaxy S3 AT&T SGH-I747 - In Retail Packaging Battery type: Li-ion; Voltage: 4.35V; Capacity: 2100mAh Uses Grade A cells to ensure longer battery life and charge cycles Compatible with Samsung Galaxy S3 i9300, and all US model S3 Phones No NFC (Near Field Communication) Function Lifetime Warranty