https://devzone.nordicsemi.com/f/nordic-q-a/334/adc-for-higher-voltages-than-vccSo i am using a LiPo battery at 4.2V and running my nRF51822 at 2.0V. Is it safe to connect the battery to one of the I/O pins to read off the battery voltage (as to calculate battery percentage)? Much Thanks!en-USTelligent Community 13Thu, 22 Aug 2013 16:48:58 GMThttps://devzone.nordicsemi.com/thread/1751?ContentTypeID=1Thu, 22 Aug 2013 16:48:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:22cb920e-61ce-4c10-ac92-e2f6f58d8dfaGuest<p>Much Thanks, Did not see that.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/1752?ContentTypeID=1Thu, 22 Aug 2013 16:48:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8f94739b-dd72-4049-8b52-186019eee4cdBastiaan<p>Much Thanks, Did not see that.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/1750?ContentTypeID=1Thu, 22 Aug 2013 07:13:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1164b2a6-f8c2-4921-ac2d-49d13aa14756Ole Morten<p>Have you had a look at <a href="https://devzone.nordicsemi.com/index.php/how-to-measure-lithium-battery-voltage">this question</a>?</p><div style="clear:both;"></div>