https://devzone.nordicsemi.com/f/nordic-q-a/90313/running-nrf52833-at-1-8v-versus-3-3vI&#39;m making a device that has a nRF52833 along with an IMU, SPI flash and an LED. This device is running off a CR2032 battery and, of course, we&#39;re trying to stretch the battery life as long as possible. The voltage drop for the LED is 2.2V or so, so Ien-USTelligent Community 13Mon, 25 Jul 2022 11:37:43 GMThttps://devzone.nordicsemi.com/thread/378528?ContentTypeID=1Mon, 25 Jul 2022 11:37:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f3a76acf-0212-4758-a65a-dd308e6baf96Kenneth<p>Hi,</p> <p>I would think running on 1.8V should be the lowest power, simply because for instance the nRF52832 will in any case need to regulate down the supply voltage internally, so to avoid efficiency loss of first go up to 3.3V and the efficiency loss of going down in voltage again seems redundant. But I guess you would need to look at the efficiency loss of regulators for various use cases (e.g. sleep and active) if you want to churn the numbers.&nbsp;</p> <p>Kenneth</p><div style="clear:both;"></div>