51822 low power consumption problemhttps://devzone.nordicsemi.com/f/nordic-q-a/76901/51822-low-power-consumption-problemWe are making a product with nRF51822;Powered by a CR2032 button battery ； Hope to achieve low power consumption; It can be seen in the datasheet that nRF51822 has Internal LDO, DC/DC converter, Low voltage mode setup, Three models.Which mode is moreen-USTelligent Community 13Thu, 01 Jul 2021 09:34:16 GMTRE: 51822 low power consumption problemhttps://devzone.nordicsemi.com/thread/318132?ContentTypeID=1Thu, 01 Jul 2021 09:34:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1ace3dd8-db52-45cc-8164-320594440d76liyangzheng<p>thank you</p><div style="clear:both;"></div>RE: 51822 low power consumption problemhttps://devzone.nordicsemi.com/thread/318123?ContentTypeID=1Thu, 01 Jul 2021 08:50:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9c822cc4-aa34-4999-abd0-c0cb751099f6Stian R&#248;ed Hafskjold<p>Hi, using the DC/DC converter is most power efficient. The schematic looks fine, but if you want to use the radio you will need a 32MHz crystal as well. Please note that the nRF51 is not recommended for new Bluetooth low energy designs, since the software is no longer updated.</p><div style="clear:both;"></div>