Wednesday, July 6, 2022

Open EVSE

 After over three and half years making due with a level 1 charger for my car I have decided to upgrade to a proper level 2 charger. I chose to install an Open EVSE charger as it allows local control and can integrate with Home Assistant nicely by way of  a HACS integration. 






















This charger allows me to see detect when the vehicle was plugged in and issue a command to turn off the charging before the car has communicated that a charging session needs to start.  Additionally it allows Home Assistant to send commands to set the max charge amperage. This data allows me to setup automations to automatically recharge quickly after allowing the battery time to cool if I have come back from lunch or  to schedule slow charging overnight. 

This charger also exposes the energy usage data. While my old solution of the factory level 1 charger with a smart outlet also exposed this data, it is important to note that functionality was not lost in this upgrade. I would hate to take two steps forward just to take one step back when upgrading smart home equipment. 

While my car is only a plug-in hybrid that tops out at about 14 AMPs, the charger was installed with wiring, outlet, and breaker rated for 60 AMPs. This will allow the Open EVSE to be used for several years and remain useful if I upgrade to a full EV in the future. Additionally this installation added a much needed 240v outlet in my garage that can be used for other things such as powering a welder or providing power for a trailer if the need ever arises.

1 comment:

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