The pny t6600 powerpack is a universal rechargeable battery designed to provide you power wherever or whenever you need it a fully charged 6600 powerpack can recharge most smartphones up to three times ideal for charging your apple android windows and blackberry devices free yourself from the wallpower on the go varies by device features output to device 5 volt 1 amp 24 amp usb ports max 24amps input to powerpack 5 volt 2 amp micro usb easy to read led battery level indicat