Solar Charge Controller

Thanks for all the help guys. TomG2 and doughere are right on it, I just want something to show me the status of my batteries when I walk through the RV. I do own a couple of multi-meters and know how to manage my 12 volt systems on both my solar powered RVs. As I stated earlier, we spend lots of time in the forest without hookups and have generators on both RVs when we need additional power on cloudy days. These little digital 12 volt meters you folks listed above will do exactly what I want, I will not need to replace my charge controller.
Thanks so much,
mtnman