Here's a portable mobile charging solution which you can use whilst on the go & protect your iPhone 5 at the same time. This ultra-slim combined charger & iphone case won't add any bulk or length to your phone thanks to its integrated charging cable that folds neatly inside of the case. The cable sits in the bottom of the case ready to be pulled out when the iPhone 5′s battery needs a quick top up. Plus, the power is also enough to get you through a long day of sending emails, surfing the web, watching movies or listening to music. With your iPhone 5 battery holding 1500m Ah, the Mi Li Powerspring 5 will more than double the battery life of your iPhone, giving you the comfort of using it to its full potential for the entire day, without worrying about your battery going flat! However before heading out, make sure the portable Powerspring case has been charged up. To do this, connect the micro-USB end of the included cable to the input port of the product, & connect the other USB2.0 end of the cable to the computer or USB (Universal Serial Bus) adapter. The battery indicator lights will start blinking to indicate charging. To charge your iphone, simply pull out the Lightning connector from Spring 5, & plug it directly into iPhone 5. When the phone shows battery charging status, it is charging. Specifications Battery: Lithium Polymer Charging Capacity: 2200m Ah Input: 5V/1A (max) Output: 5V/1A (max) Self-charging time: 5 Hours (0.5A by PC); 3 hours (1A by adaptor) Chaging Way: Plug & Play Button: Indicates power level only Battery life duisplay 4 LED indicators, 25% power each Dimensions: 128 x 63 x 15.2mm