Anyone know of a portable charger battery pack that will FAST CHARGE the smart controller?

Hello there Dude. Good day and thank you for the inquiry. Since this is a 3rd party charger ( portable charger battery pack )  for the DJI Smart Controller. I hope that you will get the best recommendation from our fellow DJI members who owns the DJI Smart Controller and are using this charger. Just a reminder that DJI do not recommend you to use a 3rd party chargers on your DJI Smart Controller. There is a  possibility that these chargers will work, however, since it's not tested by DJI we cannot guaranteed the reliability of the said charger when in use. In addition, using 3rd party chargers might cause damage or harm on your DJI Smart Controller and can void the warranty as well. Thank you.