https://devzone.nordicsemi.com/f/nordic-q-a/64409/nrf52832-large-current-consumptionHello. I am using nrf52-dk with 52832 (PCA10040). To check the current consumption, I made a simple test. I need to wake up every 5 seconds, do what is needed and fall asleep again. Since I need to wake up on a timer, I use &quot;System ON&quot; mode. Inen-USTelligent Community 13Fri, 31 Jul 2020 19:42:45 GMThttps://devzone.nordicsemi.com/thread/262620?ContentTypeID=1Fri, 31 Jul 2020 19:42:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:98d440ea-a3b4-423e-b80f-ddce6edfe42bStian R&#248;ed Hafskjold<p>Hi, the TIMER peripheral (nrf_drv_timer) uses the HF clock. The HF clock consumes about 0.6mA. You have to use the RTC peripheral instead. It runs off the LF clock which comsumes &lt; 1uA. You can use the app_timer library in the SDK.</p> <p><a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.0/lib_timer.html">https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.0/lib_timer.html</a></p> <p></p><div style="clear:both;"></div>