Have you tried to transform the poller and show the modified results in a gauge?
100 - UnDP_Value = Transformed_Value
That will invert the result and show the batterylife "used" instead of the batterylife "remaining".
This is only a different way of seeing the status but you will have the gauge in the Yellow/Red part when you start having issues with the batteries.
I'm in the same boat. I can understand your work around here but how about SW creating guages to support this?
I would agree. Inverting the data is the best available answer, but there should be a few 'gas tank' style gauges available, or possibly the ability to invert the visual-style of all the gauges.
From further reading on this site, I understand that SW uses a third party app to generate it's gauges, so I'll just drop this into 'future release enhancements'.
Thanks for the responses!! Good to know there's a workaround out there, and other people in the same boat as me.