It’s not difficult, but it is expensive and inefficient. There are very few financially viable battery technologies on the market currently, and although incremental improvements are happening on that front, there are also roadblocks (lack of raw materials like cobalt, toxic metals, thermal runaway fire risks), we really need a big breakthrough before we’ll see large adoption of batteries.

Interesting, can I ask a couple questions about that setup? How did you go about connecting all the pieces? Is it all handled locally? What hardware are you running it on? Do you have any good resources/tutorials you followed?

I have foscam cameras and have been pretty happy with them. Regardless of the brand, make sure you firewall them from the internet or they will phone home.

Reason I went with foscam was because at the time they were the only brand with an outdoor PoE camera that had a spotlight, 2-way audio, PIR, and ONVIF support. Which was what I wanted for an entryway camera. They’ve since discontinued that “SPC” model, so if I had to do it over again I would be just as likely to pick reolink (had shitty luck with amcrest).