Portable Charger 10400 RAVPower 10400mAh (2A Input, 4.5A Dual USB Output) Power Bank External Battery Pack with iSmart Technology for iPhone, iPad, Smartphones and Tablets (White) 2A Input & 3.5A Output: 2A input can save half of the time to fully charge the 10400mAh portable charger ( please use a 2A or higher output charger); 3.5A total output capable of simultaneously charging 2 tablets. Exclusive iSmart Technology: Charge faster and smarter than others, automatically detects and delivers the optimal charging current for any connected device- ensuring the fastest and most efficient charge. Large Capacity: 10400mAh capable of charging an iPhone 6 three to four times, a Galaxy S6 2.5 times, or an iPad Mini once. Unique Design: Smooth, ebony varnish allows you to power up in style, while 4 status LEDs keep you informed of remaining capacity. Safety Protection: This portable charger will automatically shut down if a short circuit or overload output occurred while unit is charging; Ultra reliable A+ Lithium-Ion battery with over 500 battery charge cycles.