Mophie's wireless iPhone battery case keeps your Lightning port free
 

Many iPhone battery cases use the Lightning port to keep your handset topped up, and that's obviously a problem when there's no headphone jack. Case makers either need to add a port back or make you forego wired listening altogether. Mophie, however,...

https://www.engadget.com/2019/01/07/...ss-for-iphone/