https://devzone.nordicsemi.com/f/nordic-q-a/73771/high-power-consumption-on-system-off---nrf52810Hello DevZone, I have made some custom boards with Laird&#39;s BL651, wearing nRF52810 chip. I was testing the power consumption and I can&#39;t get it down to uA level in system off. The board drains 2.5mA minimum when in system off, with a gpio sense inputen-USTelligent Community 13Mon, 12 Apr 2021 10:58:46 GMThttps://devzone.nordicsemi.com/thread/304230?ContentTypeID=1Mon, 12 Apr 2021 10:58:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ebb09528-3502-4a20-931d-dfdb8a6c07abJ&#248;rgen Holmefjord<p>Hi,</p> <p>If you are seeing 2.5mA current draw, the nRF52810 chip has either not entered System OFF mode correctly (current could correspond with&nbsp;<a title="CPU running" href="https://infocenter.nordicsemi.com/topic/ps_nrf52810/_tmp/gluon/autodita/CURRENT/parameters.id_current_cpu.html?cp=4_5_0_4_1_0_0">CPU running</a>&nbsp;current if you have DCDC enabled), or the current is drawn by something else on your board.</p> <p>Did you power cycle the board after programming, to make sure it does not enter&nbsp;<a title="Emulated System OFF mode" href="https://infocenter.nordicsemi.com/topic/ps_nrf52810/power.html?cp=4_5_0_4_2_1_0#unique_1830209906">Emulated System OFF mode</a>?</p> <p>You can also check with a minimal application where you only enter System OFF mode after boot, to check that nothing else in your application is preventing you from going to sleep mode.</p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>