I have an older Ecolink tilt sensor model version 2.5 that runs fine using a "Generic Z-Wave Contact Sensor" driver. I just checked and Hubitat does have a "Ecolink Garage Door Tilt Sensor" driver that you could also try.
In the docs under compatible devices, Hubitat lists the "Ecolink Garage Door Tilt Sensor" driver for the Tilt-Zwave5. I will stay on the Generic Contact Sensor driver since it is running fine.
I find that battery level is never reliable using many of the available apps and device stats. My low batter detect is when the device stops working reliably, replace the battery. Yours reporting 1% all the time is somewhat concerning as I have several ecolink contacts and never saw that. I would mark this as defective.