How long do the batteries last on my Vantage Pro2 console (FAQ)
The Vantage Vue or Vantage Pro 2 consoles can use 2 different sources of power. They can use AC power from the wall or it can use batteries as the primary power. If you are not using AC power and are using batteries ONLY, the console batteries will typically last about 9 months.
However, if you are using a WeatherLink IP (6555) or a cabled console, the batteries are ONLY good for BACKUP power. If you have a console with a WeatherLink IP (6555), the batteries will last 2 days. Using a cabled console the batteries will last 27 days.