https://devzone.nordicsemi.com/f/nordic-q-a/35777/measuring-battery-level-problemHi to all, i am working on a project based on nrf51822 soc, i want measure level of battery with nrf51822 ADC channel. i have an example code that measure the level of battery but it return different value each time that i measure the battery levelen-USTelligent Community 13Tue, 26 Jun 2018 14:04:10 GMThttps://devzone.nordicsemi.com/thread/137710?ContentTypeID=1Tue, 26 Jun 2018 14:04:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ad8afb42-8c73-4218-b2b3-b8cead26a99bAmbystomaLabs<p>And a trick on this that works well is set the radio notification distance to the maximum (5500usec in SDK 11) so you have time to do a proper A/D conversion with some averaging if you wish.</p> <p>Then measure the battery voltage before the radio goes active not after.&nbsp; This way you are assured of some radio inactivity to allow your battery to recover and show its true nominal voltage.</p> <p>To do this just add &quot;if (radio_evt)&quot; in the handler.&nbsp; If true then the radio is getting ready to go active after the notification distance period.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/137705?ContentTypeID=1Tue, 26 Jun 2018 13:51:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:80ea90b4-a749-423f-aaf1-618d41672127H&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>You can use the radio_notification library which&nbsp;provides&nbsp;you with this functionality:</p> <p><a href="https://devzone.nordicsemi.com/tutorials/b/software-development-kit/posts/radio-notification">https://devzone.nordicsemi.com/tutorials/b/software-development-kit/posts/radio-notification</a></p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>