I have a 100w panel I am trying to use instead of running a generator while camping. Cuts in at 13v out at 14.2 according to documentation. I have rv batteries (2 6 volts = 12 volt system) attached to coulometer . rv uses about 1 amp per hour doing nothing. So in 16 hours 16amp hours used. Plug in solar panel and it will charge for maybe an hour then dummy light says charged and no more amps going to battery. In 1 hour thats max 5.5 amps. Cannot be full. Is my math correct? Is this a problem with the rinky dink charge controller that comes with the Noma model 011 2514 0 panel? When I use generator and smart charger, it seems to think the battery is between 50 and 75 % charge and will continue to push 5 amps into the battery.