Browning trails cams & 12 volt external battery

I'm looking to run my browning trail cams off a rechargeable 12 volt battery with a solar panel. Browning doesn't offer this, but they do offer a separate battery pack that runs of more AA's. Has anybody set up their Brownings this way?

Just make one yourself, as long as your camera has an external plug in on it somewhere.
This is a 6 volt setup I use, just swap the panel and battery to 12 volts and you are good to go.