I have also been thinking about how to power these.

https://www.amazon.com/dp/B083RCHTQB/ref=cm_sw_r_cp_api_glt_fabc_K53ETCBJA8ZFC5J062NR

Or

https://www.monoprice.com/product?p_id=6042&gclid=EAIaIQobChMIyoXYmYK78QIVKx6tBh1NsABiEAQYASABEgJI5vD_BwE

I am actually thinking of taking a small usb to Ac adapter, cracking it open, hard wire leads, and wire nut it to the 110v outdoor lights!

I bought this USB cable for two outdoor cams and not only have I had no charging/performance issues, but I can turn the settings to max everything which really unlocks the system’s potential. I was missing too many events on battery power.