MacBook Pro (Retina, 13-inch, Mid 2014) battery life issues with 10.11.6

[border terrier]

Battery life has been consistently at 8/9 hours at 100% charge until I installed 10.11.6. Now it is at best 4 to 5 hours. I've tried resetting everything and a re-install of os x but nothing seems to work. No apps are showing significant energy except safari (as I type this post). I've also lost 2% battery charge in under 10 minutes.

Any suggestions, am I alone with this issue?

 

[border terrier]

Thx. It's been many days since the update though. I always leave the mac alone for 5 or 6 hours after an update so the OS can optimise itself for the hardware. Anyway, I'll try anything!