battery power consumption

[Dhaval Dalvadi]

Hi

I have made beacon using nrf52 dk

when i measuring power consumption after upoading firmware without removing power it minimum power consumption is 12ua when not broadcasting.

But when i remove power and give power again its minimum power consumption is 19ua when not broadcasting.

Why this difference happen?

[AmbystomaLabs]

You are going to have to clarify uploading how and powered by what?

Most likely you are making the mistake of measuring power while SWD is connected. Most of the SWD programmers run at 3.3V and power the nRF slightly through the gpio since Vdd nRF is normally lower than 3.3v. Thus the current will read lower since some of the power comes through gpio.