Allow location at charger to specify charge limit

I think that a useful enhancement would be to have a charge limit able to be specified for a given charging location. For example, we have a number of free charging facilities not too far away and it would be good if I could specify that when charging at these, it increases the limit from my normal 80% such that it reaches 80% when I get home. This helps with reducing home charging costs. 

Thus, I could specify the limit based on the location (distance from home).