External Battery Charger, Vinsic 15000mAh Ultra Slim Power Bank, Dual Smart USB Port 5V/2.4A External Mobile Battery Charger Pack for iPhone, iPad, iPod, Samsung Galaxy, Cell Phones, Tablets. External Battery Charger, with high capacity 15000mAh, provides powerful and stable power supply for charging your devices. Equipped with dual USB ports to fast charge two digital devices simultaneously. The standard USB ports are universal fits most digital devices. Smart Identification Output: Connects your devices to maximize both compatibility and charging speed (up to 2.4 amps). This charging mode will be more efficient and secure. 5V, 2A input also helps you to charge the power bank fast. Safe to use: Supports over-charged, over-discharged, over-voltage, over-current and short circuit protection, perfectly protects your digital devices from charging accident. Slim Power Bank, ultra-slim design with a hard plastic & aluminum alloy construction, solid and portable. Convenient to carry at anytime and anywhere. Easy-to-read Indicator: Built-in LED touch screen to show the remaining capacity.