What is the amperage for the USB port? October 08, 2024 23:36 Updated The amperage for the USB port is 2.1 Amp. Related articles Can the USB port charge Android devices? Battery Low icon always flashing. The iOS device (iPhone/iPod/iPad) does not respond to the unit, the iOS device is playing but no sound comes out. Can I use this unit in other countries? My iDL45/iDN45 is not charging my iPad when connected to the USB port.