Should be nice if an update that will shows the information about the Battery life remaining on the VARIA RADAR in Percentage (%) via a data field.
It is not really possible to show the battery life as a % as that data is not available over the ANT+ battery status message.
The condition of the battery is not reported as a %, but rather as a status code. You could try mapping codes 1 through to 5 to a %, e.g. 100,80,60,40,20, but you would be limited to steps of 20%. This is what the battery icon is doing,
There's also one integrated into this data field.