Chromo Inc&reg; Samsung Galaxy (S3 Mini) Backup Battery Case For Samsung Galaxy (S3 Mini) i8190 - 2000 mAH The powerful 2000mAh built-in battery can effectively extend the battery life of your Galaxy S3 Mini. Fully protective matte rechargeable battery case To charge the phone, simply slide the phone into the portable battery case and push the ON-OFF button Easy Access to all Functions, Controls, Speakers and Cameras