More power for the Galaxy S3 with Mugen Power 4,600 mAh extended battery
Official Samsung Galaxy S3 Extended Battery Kit - 3000mAh - White Reviews - Mobile Fun Ireland
Amazon.com: 6280mAh Extended Life Battery w Back Hard Cover Mini Screen Pen for Samsung Galaxy S3 III I9300/I747/L710/i535/R530/R530M/R530C/T999 : Cell Phones & Accessories