The PNY T2600 PowerPack is a universal rechargeable battery designed to provide you power wherever or whenever you need it. A fully charged 2600 PowerPack can recharge most smartphones up to one time. Ideal for charging your Apple, Android, Windows, and BlackBerry devices. Free yourself from the wall. Power on the go. Safe & reliable, premium rechargeable lithium ion battery engineered with the highest quality battery cells. 4 leds to indicate the level of charge6. Compatible with smartphones & USB charging mobile devices handsets. Manufacturers 2 Year (1 year fabric) guarantee.