FC19 Battery 'remaining time' extension in gnome 3 gone?

[Bill Murray]

Hello all,
      In FC18 I used a nice gnome 3 extension which showed the remaining 
batter time on my laptop.
This allowed remedial action if I accidentally did something stupid like 
turn the screen on max.
It is marked 'outdated' in FC19, but I don't see a replacement. Does 
anyone know where I can
get such functionality?
    Thanks,
      Bill