https://devzone.nordicsemi.com/f/nordic-q-a/86961/how-to-turn-off-the-bluetooth-moduleHi everyone. I have to turn off the bluetooth module to save battery. I am using the SDK example &quot;ble_app_template_pca10056_s140&quot;. To start the advertisement I use the &quot;ble_advertising_start&quot; command, to stop the advertisement I use the &quot;sd_ble_gap_disconnecten-USTelligent Community 13Tue, 19 Apr 2022 13:21:08 GMThttps://devzone.nordicsemi.com/thread/363610?ContentTypeID=1Tue, 19 Apr 2022 13:21:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:80c3e8f3-f430-422b-9beb-c6b91ffa05e9Karl Ylvisaker<p>Hello,<br /><br />The SoftDevice&#39;s power consumption will mainly stem from the CPU and RADIO activity during the radio events.<br />Between these events the SoftDevice only keeps the low-power RTC running, in order to know when the next event will take place - this does not draw a lot of power.</p> [quote user=""]I can&#39;t put the microcontroller in sleep mode as there are other operations that the microcontroller has to do besides the bluetooth management.[/quote] <p>The nRF should be staying in SYSTEM_ON sleep to minimize the power consumption. While this is a sleep mode the CPU is kept IDLE so that it can be woken up at a very short notice. The CPU will wake to process any events that are generated.<br />What else than BLE will your device be doing?<br /> What is your average power consumption currently?<br />Are you seeing an increase in sleep-mode power consumption before and after your call to enable the SoftDevice? If so, how large is this increase?<br /><br />Best regards,<br />Karl</p><div style="clear:both;"></div>