Aeotec Door/Window sensor 7 has incorrect battery status

I just got several Aeotec Door/Window sensor 7 contact sensors for my HE C7. Every single one of them is reporting battery '1' status. Otherwise they appear to be working fine. What's going on with incorrect battery status? I realize battery status is not always accurate or non-linear, but all 5 say '1' right out of the box.

Did you try to wake them up and do a refresh?
There seems to be a general issue with battery reporting, each of my battery-powered devices (Aeotec D/W 7, Fibaro MS and D/W sensors, Sensative Strips) did send it's battery status only once during inclusion.
C7 with v2.2.3.148.

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Following your suggestion I did wake one up and did a refresh, but battery status is still showing "1".

Just tested it the same way with my D/W 7 and one Fibaro MS, I can confirm this, everything except battery level is being reported.
I remember having read about this behaviour here in the forum before, so hopefully it will get fixed in v2.2.4.