I do not know about Cumulus but with WeeWX values are stored in the default database inside a field named consBatteryVoltage.
Daily, monthly, yearly and alltime maximum and minimum voltages along with the times they occurred are available in templates using something like:
etc...
A graph can be plotted by editing the skin.conf and cloning one of the existing graphs, replacing the name of the variable to be plotted with consBatteryVoltage.
You may check a working example of the result in my "station health page"
![[Image: daybattery.png]](http://meteo.hugovalentim.com/weewx/daybattery.png)
![[Image: weekbattery.png]](http://meteo.hugovalentim.com/weewx/weekbattery.png)
![[Image: monthbattery.png]](http://meteo.hugovalentim.com/weewx/monthbattery.png)
Daily, monthly, yearly and alltime maximum and minimum voltages along with the times they occurred are available in templates using something like:
Code:
$day.consBatteryVoltage.min.formatted
$day.consBatteryVoltage.mintime
$day.consBatteryVoltage.max.formatted
$day.consBatteryVoltage.mintimeA graph can be plotted by editing the skin.conf and cloning one of the existing graphs, replacing the name of the variable to be plotted with consBatteryVoltage.
You may check a working example of the result in my "station health page"