Battery "level" is not calculated correctly

The meaning of the Battery "level" in Cordova is a charge percentage.
Ref http://cordova.apache.org/docs/en/2.9.0/cordova_events_events.md.html#batterylow

But the Battery EXTRA_LEVEL is not a percentage. It's just a number in the range 0 to EXTRA_SCALE
Ref http://developer.android.com/reference/android/os/BatteryManager.html#EXTRA_LEVEL

So the battery level calculation should be something like:

int level = batteryIntent.getIntExtra(android.os.BatteryManager.EXTRA_LEVEL, 0);
int scale = batteryIntent.getIntExtra(android.os.BatteryManager.EXTRA_SCALE, 100);
int percent = 100 * level / scale;
obj.put("level", percent);