Vbat pin drawn high currebt when power is off

[SJati.1]

I am using Nucleo 144 H745ZQi , connected vbat pin directly using coin cell, when power is off/unconnected, LD7 led ovcr indicator turned on and current consumption drawn from baterry was 50mA, also the LD5 led turned on. However when i reconnect the power, either using option jumper on stlink or ext 5V then the LD7 turn off and it seems normal again. I wonder why? Please help me, because it's will waste the battery when used power off.

[Peter BENSCH]

@Community member​ Unfortunately, I don't have the NUCLEO-H745ZI-Q at hand at the moment, but I'm happy to test it as soon as it's on my table.

@SJati.1​ There are sample projects for all NUCLEO and DISCOVERY boards in the repository, either in your local repository or in Github, e.g. the example RTC_Alarm. Please note that the examples in the repository refer to the libraries there. If you only clone/use the example directory, you have to adapt the paths.

Regards

/Peter