I’ve been trying various setups using batteries, solar panels and the Wyze Cam. Here is the latest version. Unfortunately, the battery only lasts a couple of days. The problem is that the camera is drawing too much power versus the battery refresh rates from the small solar panel. I have it setup for continuous recording and HD event notifications.
I believe a larger solar panel (e.g. 50 Watt 12 Volt Solar Panel) is needed to make this setup work.