# Wakeup Mangoh Yellow after Power loss **URL:** \ **Category:** mangOH Yellow\ **Created:** [May 4, 2022, 10:20pm UTC](https://mangoh.discourse.group/t/wakeup-mangoh-yellow-after-power-loss/9963 "2022-05-04T22:20:13Z")\ **Posts on this page:** 1\ **Showing post:** 9
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [May 7, 2022, 12:58am UTC](https://mangoh.discourse.group/t/wakeup-mangoh-yellow-after-power-loss/9963/9 "2022-05-07T00:58:20Z")
From my test, if i cut the power, and give power again, the module can power cycle without pressing reset button Btw, maybe there is backup battery which let modules go to ULPM mode. See if this helps: > [@Battery shut-off?](https://mangoh.discourse.group/t/battery-shut-off/3321): > > Hi, I want to use the mangOH Yellow (with WP7702) in an application where it’s powered by a vehicle (using some kind of regulator to bring the voltage down to 5V). When the vehicle turns off (and thus the input 5V goes away), I was envisioning that the LiPo battery could provide enough backup power to keep it alive for a couple of minutes, then shut the WP7702 down cleanly. Then, the WP7702 could power itself back on as soon as the voltage input is supplied again (e.g. the vehicle starts back u… --- _[View the full topic](https://mangoh.discourse.group/t/wakeup-mangoh-yellow-after-power-loss/9963)._