This package is specifically designed for Samsung Galaxy S9 ,Model SM-G960U from Virgin Mobile as we stated in our listing. There are many Samsung Galaxy S9 in the market, they all use different battery. If you do not have Samsung Galaxy S9 SM-G960U , this package is not for you. 1)5000mAh Rechargeable Backup Battery Charger Power Bank Case: * Capacity: 5000mAh * Output: 5.0V/2.0A * Input: 5.0V/2.0A * Charging time: 4-6 hours. * Works as both an extended battery set and a protection case. * Built-in flexible kickstand for hands-free viewing,it's convenient for you to watch videos and movies with enviable comfort. * First-Time use or being used off:The backup battery case must be fully charged. * It can be a cellphone back shell bracket,mobile phone protective cover and battery charger. * To prevent the backup battery case from damages,away from the fire source and heat,keep out of reach of children. * The LED lights indicate how much power is left in your phone battery case. ( 4LED>100%, 3LED>75%, 2LED>50%, 1LED>25% ) * Hold the sleek ON/OFF button on the battery charger to turn the case ON and OFF whenever you need the extra power. * Using this backup battery case,you can charge your two cellphone at the same time. * The backup battery case will be charged after connecting to your Adapter charger. Install&Detach Steps: * This Battery Case is extremely easy to install and use.simply take off the top cover of the battery case and slide your phone into the case. * Lift the top of the phone slightly from the battery case,then use bottom-up way to take out the phone from the case. * Slim Power protects your smart phone from scratches and other daily wears and tear,yet small and convenient enough to fit easily in your hand or pocket.