Don't worry about running out of battery life with Power Pack Chargers. Charge a wide range of devices such as smartphones, tablets & other devices with the included cable. Lightweight & slim form factor makes it convenient to carry in case of the need for emergency power, making them ideal for business or leisure travel, road trips, outdoor excursions & more. Just plug in the Power Pack & keep going. With dual USB charging ports you get the added convenience & flexibility of being able to charge multiple devices at once. For Apple ® devices just use the cable you received with your device. LED power status indicator to lets you know how much charge is available. 8400 mAh Battery Capacity. For Device Type: Mobile Devices; Adapter / Charger Type: Portable Mobile Charger; Power Source(s): Lithium Ion Battery; Connector / Port / Interface: Micro USB; USB.