

Well, I guess whatever camera you get should give you a power requirement and you can work backwards from there as to storage and panel requirement. My off the cuff notion would say you’ll need a deep cycle or a group 31 of 100aH to last for a day or two depending on weather and length of day, and lithium batteries will get plating if you try to charge below freezing so they’re out.
It’s all in the math, then double it because nature hates you.













Yah, that’s a PWM charger. You’d likely see up to another third more power stored with an MPPT at temperatures below freezing from my experience running various offgrid livestock pumping systems over the years. I still use old PWM controllers on things like fencers because they’re pretty low draw, but I haven’t bought a PWM for years now since MPPT prices came down to earth.
Just a suggestion, idk what your particular scenario is but it sounds like you’re running out of power pretty quick. And for batteries, I’ve personally moved to LFP with heaters in insulated boxes for the sheer life expectancy, power density and reliability compared to LA in cold temperatures. But I wouldn’t say it’s the cheapest way to do things.