How to read the voltage output of a 12v battery into Hubitat?

[Cobra]

12V battery voltage monitor for a backup battery (e.g. Sump pump, Reef Tanks ... )?

I have a full-size 12 volt car battery that I use for my Reef Tank battery backup system, to keep the water flowing. It worked fine in testing, but failed during a massive storm/power outage last weekend. It turned out the battery had gone down to 10.66 volts somehow. Therefore, I'm trying to find a z-wave or other smart battery voltage monitor to keep this from happening again. In my research so far, I haven't found anything, except for the device @Cobra mentioned in his RV Automation threa…