The string after "Power source" seems to be taken directly from IOPSKeys.h (http://opensource.apple.com/source/IOKitUser/IOKitUser-502/ps.subproj/IOPSKeys.h), resulting in English only. I don't know if OSX provides some resources where you can look up the localized strings or if you have to create your own dictionary, but having all the strings translated would be very nice.
The string after "Power source" seems to be taken directly from IOPSKeys.h (http://opensource.apple.com/source/IOKitUser/IOKitUser-502/ps.subproj/IOPSKeys.h), resulting in English only. I don't know if OSX provides some resources where you can look up the localized strings or if you have to create your own dictionary, but having all the strings translated would be very nice.