Steve Oncley measured the power draw of a Licor 7500 station (1) and a krypton station (2):

stn	log entry	volts	amps	watts
1	https://wiki.ucar.edu/x/HY2gB	13.6	1.44	19.6
2	https://wiki.ucar.edu/x/H42gB	13.8	0.98	13.5