HIGH CAPACITY BATTERY: Charge your phone, ipad, tablet and other gadgets multiple times with the massive 20000mAh capacity of Nekteck Power Bank. It is small yet helps you save up to 60% of charging time! HIGH-SPEED CHARGING: This portable charger can power 2 devices simultaneously up to 3.4A total maximum speed (USB 1: 5V/1A , USB 2: 5V/2.4A). Less charging time yet more charging cycles. SMART IC TECHNOLOGY: Through the Smart Intelligent Control Technology and output adjustment, the current automatically matches the device being charged. SAFETY GUARANTEED: It is built with multiple protection system against overcharging, overheating, excessive current and/or short circuit. SMART DESIGN: This portable battery charger is lightweight and convenient. The smart LED indicates the remaining power of the battery.