I use Spartan cams and most of them are the 6v models, but I do have 2 12v and I've switched over to the lithium/solar all-in-one units that herd360 sells. They aren't cheap, but it's the simplest setup you could want and basically set it up and never have to worry about it again as long as it gets a little sun everyday. They will work with the 6v cams too, but I've had those longer and have good battery/solar setups for most of those. I will over time replace those with these setups most likely as well.