https://devzone.nordicsemi.com/f/nordic-q-a/52627/ble_app_uart-low-powerHi, I am developing a product with battery power. To preserve the battery life, this product needs to work in low power mode. My Environment is a nRF52832, SDK15.2 &amp; custom board I use ble_app_uart example Current consumption is 5mA . Pleaseen-USTelligent Community 13Thu, 26 Sep 2019 11:30:25 GMThttps://devzone.nordicsemi.com/thread/212027?ContentTypeID=1Thu, 26 Sep 2019 11:30:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:36834493-7d50-4846-a2cc-43f4ecec4b3bHadi Deknache<p>Hi Alex,</p> <p>Do you put the device cpu in sleep mode in the idle_state_handle?</p> <p>E.g. do you call __WFE or&nbsp;<span>sd_app_evt_wait()?</span></p> <p><span>This post might be of interest maybe:</span></p> <p><span><a href="https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/optimizing-power-on-nrf52-designs">https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/optimizing-power-on-nrf52-designs</a></span></p> <p>/Hadi&nbsp;</p><div style="clear:both;"></div>