https://devzone.nordicsemi.com/f/nordic-q-a/15421/my-current-measurement-result-from-nrf51dk-boardHello, I load UART over BLE example on nrf51DK (51422) DK board and measure for 13 seconds from power on. Here is the result graph and the average current is about 175uAh. Is it normal? I changed the some part of original source code as followingen-USTelligent Community 13Mon, 01 Aug 2016 02:39:22 GMThttps://devzone.nordicsemi.com/thread/58851?ContentTypeID=1Mon, 01 Aug 2016 02:39:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4282bf1f-5730-4ce1-8257-52257a52492csosse<p>Thank you for your comment. I didn&#39;t change anything from &quot;UART over BLE example&quot; except the APP_ADV_INTERVAL and comment out uart_init. I didn&#39;t try to connect. So it is just advertising the initial data from the example.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/58850?ContentTypeID=1Fri, 29 Jul 2016 12:15:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bf47ed44-81a0-47a6-b8ed-3efa893dc6deOle Bauck<p>Expected average current for the advertisement alone when using 300 * 0.625 = 187.5ms advertising interval and full advertisement packet (31 bytes) is about 150uA in LDO mode. So your measurement is not so far from that.</p> <p>It does not look like the spikes on the graph are even distributed, so are you just advertising or doing anything else? I assume that the spikes are during radio operations (advertising or connection event).</p> <p>And btw: uAh is a measurement of capacity (used for batteries), uA is current (like in average current).</p><div style="clear:both;"></div>