My Temp displays incorrectly as well in Conky and I copied/pasted from the forum as well. Could it be a text formatting issue? Everything else in Conky displays well, although I had to massage the way things lined up with spaces...

My output for cat /sys/class/power_supply/bq27200-0/temp is:

can't open 'cat /sys/class/power_supply/bq27200-0/temp': No such file or directory

Can someone help, it seems it is a syntax issue or something...Love to get my temp up and running....