Someone

signal sender=:1.3 -> dest=(null destination) path=/org/freedesktop/Hal/devices/acpi_BAT1; interface=org.freedesktop.Hal.Device; member=PropertyModified
   int32 8
   array [
      struct {
         string "battery.charge_level.percentage"
         boolean false
         boolean false
      }
      struct {
         string "battery.remaining_time"
         boolean false
         boolean false
      }
      struct {
         string "battery.charge_level.rate"
         boolean false
         boolean false
      }
      struct {
         string "battery.charge_level.last_full"
         boolean false
         boolean false
      }
      struct {
         string "battery.charge_level.current"
         boolean false
         boolean false
      }
      struct {
         string "battery.voltage.current"
         boolean false
         boolean false
      }
      struct {
         string "battery.reporting.rate"
         boolean false
         boolean false
      }
      struct {
         string "battery.reporting.current"
         boolean false
         boolean false
      }
   ]