I am getting more familiar with the PROs and CONs to operating these styles of cameras afield.
First the whole idea in my head was to have a super mobile product to "stake in" the ground over a baited area that provides built in IR lighting and onboard recording for at least 12 hours (a typical overnight set). There are a ton of products out there, mostly individual components, but nothing turnkey. Having something as a 24/7 solution would be optimal but not a requirement.
So when I bought into these initial components I was able to use a 12v battery to power the cameras, I am not sure on the maH draw of each camera, the manufactuer simply lists power consumption as 5v. In my testing at the workbench a 12v 1 amp battery didn't last but a couple of hours whereas a 12v 4 amp battery lasted 12 hours. I tried some Moultrie Power Panels to try and keep the batteries charged however the panel wasn't large enough to run the camera and simultaneously build a charge. So to this point I haven't found a suitable solar panel to go 24/7.
I'm using parts on hand for these early tests so while there may certainly be a better option, which I hope others can provide some ideas or expertise on the topic, I using what I have to keep costs low.
Below are photos of the area I baited and filmed this weekend, the 12v (unknown amp) deep cycle battery can run 4 of these cameras for a few days without a solar panel attached.
Notice I use a fence panel slat intertwined into the barb wire to mount the flat base of the camera to, this allows me to adjust camera height and put a camera anywhere, heck I nailed one to a tree recently. The battery could be better hidden from the range of fire but I didn't have enough wire to do that.
Camera hooked to USB end of power converter, I duct taped in a plastic ziplock as weather protection for when I remove the cameras and leave the wiring intact. At this time I don't have a nifty solution for weather proofing the USB connection, I figure heat shrink and tape would suffice but when you need to dock into the camera to retrieve the data it would be a pain to remove and reinstall. P.S. the micro SD card is hidden in the camera and could be pulled without disturbing the connections but it is also a pain. All wiring is zip tied to the hog panel or barb wire - if you don't have any of that around your bait area a quad setup to a sole battery probably isn't the best choice, you'd be better suited to hang a single cell power supply to the fence slat for each camera.
Pros and Cons
I'll just mainly hit the Cons:
The data transfer is taking way too long, Im averaging at least 30 minutes per camera to transfer video to the laptop.
The sound quality is no good - wish I had the skills to open this puppy up and install a high fidelity microphone
The IR lights are way too bright inside of 7 feet which will wash out the details in recorded subjects. Again I wish I had the know how on opening up the camera and installing a resistor to knock down the power feed to the IR lights
USB for power and data is cool for PC computing but not so cool for outdoor all weather usage - I assume the first camera failure will be at this location at which time I intend to cut the cord and rewire another USB connection...
That's all I got - if somebody ends up patenting this or making a product that works good on ya.