PowerBear Samsung Galaxy S4 Extended Battery [6000mAh] & Back Cover & Protective Case (Up to 2.3X Extra Battery Power) - Black [24 Month Warranty & Screen Protector Included] GO BEYOND YOUR POWER: Increase your battery power with the PowerBear Galaxy S4 Extended Battery. A high capacity battery with up to 230% capacity of the standard battery for your smartphone. Replace your existing smart phone battery with a stronger, larger battery that is guaranteed to last 2.3X longer than your original battery. An excellent source of portable extra battery power, the Extended Battery for Galaxy S4 gives you the ability to Go Beyond Your Power! MAXIMIZE YOUR POWER: With the Samsung Galaxy S4 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 S4 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 S4 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 S4 and replace your existing back cover with the PowerBear extended back cover. Now you will have access to 2.3X the power for your mobile device. GRADE A+ BATTERY CELLS: The Extended Battery for Samsung Galaxy S4 uses Grade A+ rated battery cells with CE and ROHS certification. Each battery comes with a special chip to protect your smart phone from over-heating, short-circuit, over charging or over discharging. Each Extended Battery for Samsung S4 battery is designed to last over 500 repeated battery charge cycles. 24 MONTH WARRANTY: PowerBear stands behind our products. If you are not 100% satisfied with your new Galaxy S4 Battery, just let us know! Contact us via Amazon and we can help with any issues that you may have. Customer satisfaction is our top priority, and that's the PowerBear guarantee!