I wanted to mention that I just started working on a binding. It is still in a very early state but basically it already works for a few channels.
Source can be found here: GitHub - alexf2015/openhab-addons at easee-dev
PR is not yet opened as there is still too much missing.
Maybe I will need some help later on as I do not have a car yet and thus there is a lot of stuff I cannot test. And also the API documentation is quite short there is no explanation of the meaning for all those “channels”. Also those status channels return integers and I could not find any mapping to text, yet.
Early access version can be downloaded here: http://www.friese-de.eu/openhab2/org.openhab.binding.easee-3.3.0-SNAPSHOT.jar