Getting lower power consumption on Seeed XIAO nRF52840

Found SdFat_-_Adafruit_Fork 2.2.3 in /Documents/Arduino/libraries/. Try installing it from the library manager.

If nothing is connected other than the battery, I don’t think the current consumption will increase just by pulling up.
You could try pulling up D0 to D10 in sequence and check if the problem is caused by the location of the pins. Another thing, why don’t you check if the soldering of the pins is incomplete and not short-circuited to anything.

The rated current of CR2032 is 0.2mA, which is too inefficient to start nRF52840.
Can you try with a 3.7V LiPo battery?

I checked the compiled output and the following file was used for SdFat. \Arduino15\packages\Seeeduino\hardware\nrf52\1.1.8\libraries\SdFat

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