https://devzone.nordicsemi.com/f/nordic-q-a/2305/receive-current-power-consumption-and-continuous-scanningHi, I have some questions about how BLE scanning works that haven&#39;t been answered clearly anywhere I can find, (except no-doubt the Bluetooth Spec/Tome): What is the receive current for the nRF51822 when it isn&#39;t actually receiving any dataen-USTelligent Community 13Wed, 23 Apr 2014 12:27:06 GMThttps://devzone.nordicsemi.com/thread/9557?ContentTypeID=1Wed, 23 Apr 2014 12:27:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1fa8e225-1988-4559-bf6d-0273198962e9H&#229;kon Alseth<p>Hi Tim,</p> <ol> <li> <p>The on-air data rate for BLE is 1MBit, and the typical current draw when in RX is then 13 mA. Even if you do not receive anything, you&#39;re still actively listening for a particular pattern of data.</p> </li> <li> <p>You have the option to go to sleep, unless you have some processing to do (polling a sensor, processing data, or similar).</p> </li> <li> <p>Yes, you need a low connection interval in order to maintain a low latency link. In order to keep current consumption down, you can then enable slave latency allowing you to skip a number of connection intervals if you do not have any new data to send.</p> </li> <li> <p>Most phones uses a combo-IC, which has BT+Wifi etc. The current draw is usually not constant, but duty cycled between scanning for bluetooth classic and low energy devices. I am not sure how it&#39;s done on iOS devices, but I assume it&#39;s duty cycled to keep power consumption lower.</p> </li> </ol> <p>Best regards Håkon</p><div style="clear:both;"></div>