A:Answer I don't think best buy sells the cord I use with this battery, but I can assure you the battery itself can more than handle your phone. I bought a cable on Amazon for 8-10$ USD and it has 1 USB, 1 USB-C, 1 Apple Lighting Bolt charger, and 2 or 3 micro-USB connections all-in-one which allows me to use that cord to charge devices from the power bank and then when I need to charge the power bank I can just plug either the USB-C or Micro-USB into the input and plug the USB connector into wall charger.