Ecolink Z-wave door contact sensor battery meter not reading

I just installed an ecolink door contact and the battery meter under the preferences is not reading at all. It is just showing a -. Any ideas what could be the problem?

Remove the cover to trip the tamper switch and put the cover back on. That seems to get reporting working. Or you can wait until it sends the data (not sure how long that takes). As soon as I install one of these I always remove/replace the cover.