solar panels

Gren

Hi guys n gals ,got abit of a problem, We have been having trouble with our motor mover. It is adouble mover fitted to a unicorn pamplona ,If we leave the van for two weeks the motor mover wont drive ,Ihave spoken to powertouch and done all there tests.Powertouch
say unless my battery is not fully charged the mover will cut out the only option I can see is asolar panel to trcle charge it does anyone have any suggestions