g'day to all my caravan and camper trailer friends....

i have a 21ft caravan and i'm thinking about adding a solar panel as an additional power source.

the van is fitted with 2 x 100ah deep-cycle batteries.

if anyone can help me, what size solar panel should i use to keep the charge up to the batteries?

i'll only be using the batteries (for lighting and the fridge) while camping where generators aren't allowed.

any suggestions?????

big daddy