Hi All,
I have been using the battery state card for a while now to keep an eye on all my battery powered devices. I recently discovered it can show more than just battery info, such as the image below
Does anyone know how to customize the code to do this? I am running Z2MQTT. I tried adding the info in the instructions but it just gives me a blank card. I am not sure where to begin on getting this working.
Thanks in advance for any help

