How long can the camera survive "without sun"? I find that particularly interesting in winter.
An addendum:
After it was drained down to 73% battery charge these days in really dreadful weather, it is, for example, already back up to 91% today.
My conclusion: it works. And I've already caught the neighbor twice rummaging through our carport while we were on vacation – the second time I spoke to him through the intercom. Since then, he hasn't come back. I probably scared him too much, me the bad guy.