Has anyone here used the new smart tariff card? It is not clear how it works. For instance, if you set up a discharge period over serveral half hour slots, does the system automatically calculate a discharge rate in oder to discharge over the time period identified so that you have a certain amount of SoC left - or does the battery just empty? What is the hold mode for, that just seems to be similar to the standard charge portion - or is this really more geared to those on Agile?