G-Cord&reg;  10000mAh Smart Aluminum Dual USB High Capacity Portable Charger External Battery Pack Power Bank for iPhone, Android, Samsung, iPad, HTC, LG, Motorola, Nexus, Smartphones, Tablet (Silver) 10000mAh high capacity, lithium polymer core battery, full charging time is about 12 hours, provides 3-5 charges for iPhones and smart phones, 1-2 charges for Tablets Direct output design. When connecting the battery with your device, the battery automatically gives an output, no button press or LED touch needed Smart. Light shake the battery, the blue LED lights, indicates the current power, and LED goes out within 5 seconds, no power wasted Compatible with all mobile devices charged by USB port. Two USB ports fast charging 2 devices simultaneously Compact and portable, convenient to carry in your bag when go outdoor camping or sports