Amazon.com: Samsung Galaxy S3 S III Mini Original OEM Battery - Non-Retail Packaging - Black (Discontinued by Manufacturer) : Cell Phones & Accessories
Samsung Galaxy S3 2100 mAh Spare Replacement Li-Ion Battery with NFC Technology for All Carriers - Non-Retail Packaging - Silver : Cell Phones & Accessories - Amazon.com
More power for the Galaxy S3 with Mugen Power 4,600 mAh extended battery