The affordable phone battery will provide your phone with enough energy for you to communicate with friends and family through calls or short messages. And it can also be easily recharged when needed. This lightweight replacement cell phone battery is a safe， reliable and long-lasting source of power for hours of fun with your mobile phone. The Samsung phone battery is small enough to carry around and ideal for the mobile professional or casual user alike. <br>Easy to charge your battery without the phone， this Smart Cradle Charger with USB Output for Samsung Infuse 4G i997 is a necessary device on your office desk or at home. Such Battery charger is great partner for you as a backup battery charger! This mobile phone charger featuring quick charge with automatic constant current control prevents battery from overcharging， short circuit， and electronic shock， preserving your battery′s life span.                                     Features            New 1800 mAh Li-ion Battery for SamSung Infuse SGH-i997 4GHigh quality batteryBest replacement for the original battery with comparable standby and talk timeKeep an extra battery on hand for extend standby and talk timesIntegrated microchip prevents overcharging and lengthens battery lifeThe best replacement spare battery for your phoneOur battery is sent out with little or no power， so please charge it for about 4 - 6 hours before usingThe battery operation time depends on conditions such as: Transmitting power level， Signal (distance between the phone and the base station)， Network parameters defined by the operatorSmart Cradle Charger with USB Output for Samsung Infuse 4G i997Easy to charge your battery without the phoneBuilt-in protection circuit prevents overcharging and heatsCharge from a USB port or power outletCharge two batteries at the same timeInput: AC 100 - 240V ~ 50 / 60Hz 0.15AOutput: DC 4.2V 350mA±50mAUSB 5.2Vd.c 800mADimensions: 3.27 x 2.01 x 1.02 inch / 8.3 x 5.1 x 2.6 cmWeight: 55g / 1.94 oz                                                            Specifications            Battery type    Lithium Ion    <br>Battery Capacity    1800mAh    <br>Voltage    3.7V    <br>Dimensions    2.05 x 1.97 x 0.24 in (L x W x H)    <br>Weight    1.02 oz    <br>Color    Black    <br>                                                            Package Includes            2x 1800mAh Battery for Samsung i997 Infuse 4G1 x Smart Cradle Charger with USB Output for Samsung Infuse 4G i997