Cardinal Flyers | Does anyone have the latest solution to the GNS-480, "Low Battery Voltage Unit needs service," message | Facebook
Cardinal Flyers | Does anyone have the latest solution to the GNS-480, "Low Battery Voltage Unit needs service," message | Facebook
![Why not GNS 480? - Miscellaneous Aviation Talk - Mooneyspace.com - A community for Mooney aircraft owners and enthusiasts Why not GNS 480? - Miscellaneous Aviation Talk - Mooneyspace.com - A community for Mooney aircraft owners and enthusiasts](https://i.ytimg.com/vi/XhIwBUKL_-E/maxresdefault.jpg)