I just got my Pocket 2 a week or so ago. I am going to show my ignorance here but I have an assortment of power banks. Would there be a reason to utilize only a certain power bank with the pocket 2?

Hello there. Thank you for reaching out and for these information you have posted. Since this is a 3rd party accessory ( powerbank ) for the DJI Pocket 2. I hope that you will get the best recommendation from our fellow DJI members who owns the DJI Pocket 2 and are using this power supply. Just a reminder that DJI do not recommend you to use a 3rd party accessories like powerbanks to charge your DJI Pocket 2. There is a  possibility that these charger will work, however, since it's not tested by DJI we cannot guaranteed the reliability of the said charger. In addition, using 3rd party chargers like power banks might cause damage or harm on your DJI Pocket 2and can void the warranty as well. Thank you.