The shutdown current of the MAX31865 is 1.5mA due to the internal fault detection, which requires a large current during shutdown. In handheld applications, the power supply of the MAX31865 can be controlled as needed to reduce power consumption. The common practice is to turn off the power supply of the MAX31865 when temperature measurement is not required, so that no current is consumed. When measurement is needed, the user can then turn on the power supply, configure the MAX31865, and then perform measurements. After completing the measurements, power should be turned off. This can save battery power and extend battery life.