Zikon 5200mAh Portable Charger External Battery Pack Power Bank (Smart Technology, 2.4A Output, 2A Input) for iPhone, iPad, Android, Windows smartphones, tablets and more (Silver) Smart 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. Compact body, amazing capacity: Fitting in the palm of your hand, get two full charges for iPhone 6, or more than one charge for large phones like 6 Plus, Note 4, etc Unique Design: Made with an ergonomic design that is carefully matched with a gorgeous metal shell that will transform you into a style icon, while 4 status LEDs keep you informed of remaining capacity. Safety Protection: Ultra reliable A+ Lithium-Ion battery with over 500 battery charge cycles; short-circuit and over-current protection. This battery pack will automatic shutdown if a short circuit or overload output occurred while unit is charging. Zikon's 5200mAh is a compact power bank charger with plenty of juice to charge your device.