https://devzone.nordicsemi.com/f/nordic-q-a/14930/nrf52832-vdd-3-3v-battery-saadc-measureHi, I saw in the infocenter that the SAADC can measure the VDD directly. So in my case I want to check the voltage of a 3.3v coin cell regularly, I could do this without any external elements? I&#39;m meaning without external resistances or capacitorsen-USTelligent Community 13Mon, 04 Jul 2016 10:43:50 GMThttps://devzone.nordicsemi.com/thread/56963?ContentTypeID=1Mon, 04 Jul 2016 10:43:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:df806908-d61e-4504-ae8c-e24f8bd21527Wojtek<p>If you are supplying power from that coincell directly, you don&#39;t even have to waste analog pin for that. Just set SAADC sorce as NRF_SAADC_INPUT_VDD and set the proper gain according to your reference...</p><div style="clear:both;"></div>