GO BEYOND YOUR POWER: Increase your battery power with the PowerBear Galaxy S3 Extended Battery. A high capacity battery with up to 220% capacity of the standard battery for your smartphone. Replace your existing smart phone battery with a stronger, larger battery that is guaranteed to last 2.2X longer than your original battery. An excellent source of portable extra battery power, the Extended Battery for Galaxy S3 gives you the ability to Go Beyond Your Power! MAXIMIZE YOUR POWER: With the Samsung Galaxy S3 Extended Battery, you have the ability to increase your battery capacity drastically. Compared to the existing standard battery capacity of your device, you can more than double your battery power. This Samsung Galaxy S3 with Extended Battery gives your phone battery the strength it needs to last all day, and then some. Included in the packaging is an Extended Battery along with an Extended Battery Cover. EASY TO USE: This S3 Extended Battery is extremely easy to install and use. After turning off your device, just remove the back cover of your smart phone along with your current battery. Simply pop in the Extended Battery for S3 and replace your existing back cover with the PowerBear extended back cover. Now you will have access to 2.2X the power for your mobile device.