Where does it take power when on charging station waiting to work?

Hi there,
i have a question concerning charging cycles :
when the robot is on charging station waiting and charged at 100%, where does it take energy to keep wifi/bluetooth connection.
Is it taking power from his battery or from the grid ?
if it is taking power from battery, then it is not good for the battery itself due to micro charges occuring very often.
Or does it take power from the grid as an EV is doing when it is plugged ?
thanks

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Hello, the robot consumes battery power when in standby mode.

ok thanks
that's what i suspected
not cool for the battery life then always doing micro charges.
I wiil configure the charging period instead.