Originally Posted by Wildman

hi a great theory but as you have found does not work. 113amp/hrs is an odd battery. Assuming it is correct and a battery should never be allowed to fall below 50% charge that would theoretically give you 56.5 useable amp/hrs don't forget your other power usage, lights, chargers, waterpump blown air heating etc. 56.5 amp hours does not go very far, however if wilding and moving on everyday a few hours driving should keep the battery topped up, a solar panel will help in the summer. However unless it is a very large one or unless you are in Spain, will not do you much good in the winter.
More batteries is the order of the day.