Among the largest capacity 18W USB-C PD power banks. Its lower output offers a cost savings compared to similar sized power banks. But it can still fast charge many iPhone and Android models. For several days.
Improving upon the ZMI PowerPack 20000 (QB820). While keeping elements which worked well. It has the same general design and enclosure. But all new electronics and lithium cells. Made to maximize output while minimizing temperature and throttling.