I had the A99 set up with the 70-400G all day.
With only a little reviewing, GPS on and 99% use of EVF, I shot 619 frames on a battery with 9% power remaining. Pretty damn good I think.
![Very Happy :D](./images/smilies/icon_biggrin.gif)
![Very Happy :D](./images/smilies/icon_biggrin.gif)
To be fair it was switched on, shot set up then a blast of between 3-8 frames then off till the next one. I have in the past had it permanently on with power save set to 2 minutes or so and I've been on 50% power after 150 frames.
A few samples: The Red Arrows plus 4 RAF Typhoons
![Image](http://i19.photobucket.com/albums/b184/Mike7D/DSC04999_zps11b85541.jpg)
The stunning Swedish Saab Viggen
![Image](http://i19.photobucket.com/albums/b184/Mike7D/DSC05425_zps013eb40b.jpg)
An Austrian Air Force Typhoon pulling high G in the moist air
![Image](http://i19.photobucket.com/albums/b184/Mike7D/DSC05188_zpsc8e04537.jpg)
Mike