Although not shown in the picture, there is a small 12V gel cell that runs the RRC control box. It is sitting below me in the photo, but out of sight. The wireless travel 3G router has its own lithium battery enclosed...good for about 2 hours of operating before a recharge is necessary.
When operating from my RV, I use the RV battery to power both 3G router and RRC...unless I have shore power; then I use the AC/DC power adapters...
John K7FD