Zendure A5 Power Bank 16750mAh &ndash; Ultra-Durable Portable External Battery, Pass-Through Charger for iPhone, iPad, Samsung and More, PC Advisor Winner 2014-2017 &ndash; Black Durability & Style: Crush proof composite material, dual-injection molding and a shock-absorbing central belt make it one of the most durable and yet stylish external batteries available. In addition, the portable charger can maintain up to 95% of charge after six months in standby (when USB disconnected). A great feature for emergency backup. [TSA Approved] All Zendure power bank is allowed by TSA to be transported in carry-on bags on a plane. Unique Charge-Through (a.k.a. pass-through charging) Feature: You can charge Zendure while charging your devices with a single wall charger, a feature rarely seen in other power banks. (10W+ power source is recommended, and the output of the power bank is up to 1.3A in charge-through mode) ZEN+: Ultimate compatibility. The USB Ports automatically detects your device and fine tunes the output to charge it at maximum speed (up to 2.1A). The power bank will turn itself on automatically when connected to compatible devices so you don't need to push the power button on the external battery. Enjoy top charging speed with a "Zen" peace of mind. Zendure: Originated from one of the most successful external battery projects on Kickstarter. Trusted by hundreds of thousands of fans worldwide. Join the Zendure experience today. What's Included: 24-Month Worry-Free Warranty (If the Amazon return window is closed, please contact Zendure support directly) and LIFETIME friendly customer service. [In the Box]: Zendure A5 16,750mAh External Battery, Micro USB Cable, Travel Pouch, User Manual, Zendure Fan Stickers