https://devzone.nordicsemi.com/f/nordic-q-a/62412/external-power-supply-to-nrf52840-dongleHello community, I have programmed my dongle as beacon. Now I want to stick them to the wall for experiment purposes. How is it possible to power them up via external battery or something instead of usb-power? I have seen that in documentation thaten-USTelligent Community 13Fri, 19 Jun 2020 08:34:24 GMThttps://devzone.nordicsemi.com/thread/255900?ContentTypeID=1Fri, 19 Jun 2020 08:34:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:97f5cd33-63f4-4b29-9e66-bc5e7cab3d6dAmanda Hsieh<p>Hi Tom,&nbsp;</p> <p>Depend on your requirement. Please the discussion in this&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/58030/looking-for-ideas-to-mount-coin-battery-holder-to-nrf52840-dongle/248837#248837">post</a>. Just make sure to follow&nbsp;<span>the detail in the&nbsp;</span><a title="External regulated source" href="https://infocenter.nordicsemi.com/topic/ug_nrf52840_dongle/UG/nrf52840_Dongle/hw_power_ext_reg_source.html?cp=4_0_5_5_2_1">External regulated source</a>&nbsp;documentation.&nbsp;<span>&nbsp;</span></p> <p><span>Would you consider&nbsp;<a title="nRF52840 DK" href="https://infocenter.nordicsemi.com/topic/ug_nrf52840_dk/UG/nrf52840_DK/intro.html?cp=4_0_4">nRF52840 DK</a>&nbsp;which has multiple power options including&nbsp;Coin cell battery and&nbsp;Lithium polymer (Li-Po) battery? See&nbsp;</span><span><a title="Power supply" href="https://infocenter.nordicsemi.com/topic/ug_nrf52840_dk/UG/nrf52840_DK/hw_power_supply.html?cp=4_0_4_7_2">Power supply</a>.</span></p> <p><span>-Amanda H.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/255840?ContentTypeID=1Thu, 18 Jun 2020 16:16:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:471cfcab-1842-499c-b083-fe73b192041eTom_1<p>Hi amanda thank you for your reply.&nbsp;<br /><br />Can i ask what battery would you suggest to use? and what else would i require? For example resistors etc?<br /><br />Thank you in advance.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/254373?ContentTypeID=1Thu, 11 Jun 2020 07:13:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dddeccc4-d090-4486-8945-4e64f4c24b91Amanda Hsieh<p>Hi,&nbsp;</p> <p>Please see the&nbsp;<a title="External regulated source" href="https://infocenter.nordicsemi.com/topic/ug_nrf52840_dongle/UG/nrf52840_Dongle/hw_power_ext_reg_source.html?cp=4_0_5_5_2_1">External regulated source</a>&nbsp;for the detail.&nbsp;</p> <p>This <a href="https://devzone.nordicsemi.com/f/nordic-q-a/58030/looking-for-ideas-to-mount-coin-battery-holder-to-nrf52840-dongle/248837#248837">post</a>&nbsp;might help.&nbsp;</p> <p>-Amanda H.</p><div style="clear:both;"></div>