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Aeotec multisensor batt capacity drops very fast

The battery capacity of my Aeotec multisensor drops very fast, first I thought this was influences by the (outside) temperature, but it continue also indoors.
The update was set on 1200 sec, level of temperature ed at 5.
movement alarm on low. level 2.

Is this normal, please advise?

The graph show an low level of 16% but on my app I got a warning for level of 1% left, does not show in the insights records

Attached the graph from insights.