[4550mAh Tested Capacity] Gorilla Gadgets 4500mAh Extended Life Battery for Samsung Galaxy S3 with NFC + Red Back Cover [Compatible with Samsung Galaxy S III GT-i9300, AT&T Samsung Galaxy S3 Samsung i747, Verizon Samsung Galaxy S3 Samsung i535, T-mobile Samsung Galaxy S3 Samsung T999, U.S. Cellular Samsung Galaxy S3 R530, and Sprint Samsung Galaxy S3 Samsung L710]