A:AnswerCorrect. Any cable, with a USB-A end, that is compatible with your phone will work with the battery pack. Plug the cable into the large USB port on the pack and you're good to go.
A:AnswerThis external charger has a USB-A port to which I attach my lightning cord to charge my iPhone. It also has a micro-usb port for recharging the external charger itself.
A:AnswerYou use a standard USB charging cord and plug it into the center of the charger then plug the lightning (or similar) part of your cord into your phone as usual.