Anker Astro E5 16700mAh Compact Portable Charger From ANKER, America's Leading USB Charging Brand Faster and safer charging with our advanced technology 10 million+ happy users and counting 2nd Generation Astro E5 Portable Charger External Battery Power Bank A power plant for your palm or pocket. PowerIQ Detects your device. Delivers the fastest charge. Exclusive to Anker, PowerIQ amp-adjustment technology intelligently identifies your device to deliver its fastest possible charge. Enormous Capacity Enough power to keep you going for days. Charge an iPhone 5s over seven times, a Galaxy S5 four times or an iPad Air more than once. Our Most Compact Yet Using ultra-high density cells, we've packed in 25% more power than the same-sized Astro E4 to produce our most compact battery yet. Superior Quality We use only premium Panasonic battery cells, together with the most advanced materials and cutting-edge technology, to ensure complete safety. World Famous Warranty At Anker, we believe in our products. That's why we back them all with an 18-month warranty and provide friendly, easy-to-reach support. For Optimal Use: Use the included cable, your original cable or a third-party certified one (such as MFi). Compatible with Apple and Android smartphones, tablets (including the Nexus 7) and other USB-charged devices except for the LG G4 / G2, iPod nano, iPod Classic, HP TouchPad, Asus tablets and some GPS and Bluetooth devices.Remove film before use. To give your Astro E5 the fastest, safest recharge, use an Anker USB charger. Using an ordinary phone charger may cause overheating.