https://devzone.nordicsemi.com/f/nordic-q-a/21016/nrf51-stops-after-some-daysWe have made custom board with raytec MDBT40. Our device was working for few days on cr2032 battery and suddenly a day ago it stoped working we tried with new battery but it did not work battery last used battery voltage is around 2.8 volts.Once I reprogramen-USTelligent Community 13Mon, 03 Apr 2017 10:21:48 GMThttps://devzone.nordicsemi.com/thread/82114?ContentTypeID=1Mon, 03 Apr 2017 10:21:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5350c0a8-88ff-479c-96e0-23708c1a0783Hung Bui<p>@shirish47: Can do you debugging ? What you described suggests that it could be an issue with the flash. That it may changes when your device running and your code had an issue with it.</p> <p>Do you write /read anything from the flash ?</p> <p>Can you print out log or something ? Could you check when does your code stuck ?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/82113?ContentTypeID=1Sat, 01 Apr 2017 05:10:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a0504f45-e50c-4084-a816-62d4f1c2034ashirish47<p>yes after flashing I disconnect programmer and then put the battery. also this happens with new battery too. I am going to do more test. with battery and another mode. it will not work until I reprogram and than it will stop after few mins or so .. while this same code worked for almost 5-6 days on one coin cell.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/82112?ContentTypeID=1Fri, 31 Mar 2017 14:43:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e7358dc5-8e4d-4973-945c-e149d6089023Turbo J<p>Did you remember to remove the power after programming? If not, your NRF will stay in a high power debug mode consuming <em>much</em> more current than usual. Is the battery measured under load? Some CR2032 have 2.8V without load despite being almost completely empty.</p><div style="clear:both;"></div>