The microphone sensitivity level of the baby unit may be set too high, which causes the baby unit to transmit more often.
Decrease the microphone sensitivity level in the menu of the parent unit.
The volume on the baby unit may be set too high, which causes the baby unit to consume a lot of energy.
Decrease the volume of the baby unit.
Only for models SCD497, SCD498, SCD499: Perhaps you have switched on the nightlight.
If you want to use the nightlight, we advise you to run the baby unit on mains power.
Only for model SCD499: You may have set a maximum room temperature that is lower than the actual room temperature or a minimum room temperature that is higher than the actual room temperature. This causes the display to be lit all the time, which results in higher power consumption and batteries that run low quickly.