Klipper + TMC2209 v3.0 (FYSETC) + SKR v1.3: Undervoltage GSTAT + Layershifts

Looking at your configuration, you have set the run_current of your steppers way too low. For regular steppers, the usual current is between 0.6A and 1.1A.

Look at the datasheet of your stepper motors. There you will find a current rating. Just be careful - some manufactures give RMS rating, some max rating.

If in doubt, consider it to be the max rating and calculate your RMS current:

rms_current = max_current / 1.41

Then we will apply a small margin to get to the run_current:

run_current = rms_current * 0.9

This will give you a good start. Monitor your stepper’s temperature during the first longer prints. If they get too hot to touch, cut down the current a bit. If they stay comfortable to touch you could yank up the current a bit.