See here for earlier info.
I had a go at getting this integration installed and with a fair bit of help from the good people on the HA user forums* I have it running.
Working on some dashboards, but the nice thing with this is I can have a dashboard operating on both my and my wife's phone whereas iSmart is limited to one device at a time. Indeed there may never be a need for iSmart.
Will use something like this for a phone dashboard:
We don't need defrosting, so left those control out. I can still get them via the main dashboard if ever needed.
Some prettying up with a pic of the car etc might be...
It's for whatever you want to use it for. I use it for tracking info on the car, and occasionally have used it with some automations regarding charging (mainly as load dump in my last home as I had to carefully management peak current draw).
Here's an example of a couple of charts where I track economy over time:
View attachment 37111
Guess when I did a bunch of towing?
I prefer for charging automation to be managed by an independent charger control though, as I think it's best not to be reliant on the car's connectivity and SAIC's servers for that task.
But for the most part you certainly could use it to manage charging. In fact I might just trial it tonight for my wife's car with the plug-in charger during the super off-peak period (mine will get charged with our wall charger).
You could do all sorts of things - e.g. if you were a regular commuter and needed to pre-warm the battery and cabin in winter on certain days of the week then you could automate that to happen at a certain time of day if the exterior temperature goes below a set threshold. Easy to set a toggle to turn the feature on/off.
Or set up an alert if the 12 V auxiliary battery voltage drops too low too often, indicating it might be good idea to tend to it or replace it.
I have a sensor I set up to tell me how many days it's been since the car was fully charged to 100%. I could set a trigger to remind me to do that if it's been a bit long.
Really it's a function of your imagination and thinking "wouldn't it be good if... ?".