Iphone 5 5s Slim Battery Case 2500mah External Power Bank Charger (Black) Compatible with Apple iPhone 5 and 5S. Built-in rechargeable battery with 2500mAh capacity doubles the battery life. 4 LED Light Battery Status Indicator at the back of the case. Standby/Charging switch gives you choices when to use the battery in case. Combines rechargeable back up battery with ultimate protection. In beautiful retail box, USB cable included. 3 month warranty included.