For your reference, here are some reasons affecting power consumption:
1. If there is a high signal strength, the transmission power of the doorbell is low, and the power consumption is low. If there is a low signal strength, the transmission power of the doorbell is high, and the power consumption is high;
2. For the battery, if the temperature is lower than 0℃, the battery capacity will decrease significantly;
3. The standby time is affected by video shooting time, real-time mode, the shooting interval, etc.;
4. The most power-saving mode needs to turn off the motion detection function in the Mi Home/Xiaomi Home APP. After it takes effect, photos or videos can be taken only when the doorbell is pressed.