I\'m trying to get the power usage (in watts) but I can\'t figure out how. I looked at pmset and IOKit but couldn\'t find anything about it. coconutBattery can calculate it for
You should use ioreg -n "AppleSmartBatteryManager" -r -l and from there it should be easy to calculate.
ioreg -n "AppleSmartBatteryManager" -r -l