Samsung - Portable Battery Pack 8400mAh attached Micro Silv - Designed for power users the High Capacity 8400 mAh Battery Pack (Silver) can handle any on-the-go power need. Features a sturdy design with a bit of style in keeping with the Galaxy line. An integrated Micro-USB charging cable (2.0A) and full size USB charging port (2.0A) allow universal compatibility. Package includes an additional Micro-USB cable for recharging the battery. Multiple LED indicator shows charge status and energy remaining.