Hi Ashok Ra,
I could see similar issues at my side also. We are trying to figure out the actual issue. I will let you know the updates.
Mean time please make sure that you have connected the jumper correctly to take power from coin cell.
Also LED and other power consuming peripherals may not work in the cell powered situation.
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Unfortunately current CYBT-213043-MESH board have some leakage current; Because of which it can't be powered by coin cell battery.
Sorry for the inconvenience caused.