I've recently purchased an EV and was wondering about how to setup the EV charger. From my understanding of how the Aux output works, you could set the on SOC to be 100% and the off to be 95%. That means it will only use 5% of your home battery to charge the EV, and it will only do this when PV is not generating enough power for the house + car. and then the car charger will switch off. Otherwise, the battery will charge the car and immediately be recharged by PV, maintain the battery level above 95%. Have you tried these settings on Aux Output?