rMBP high battery drain, doesn't seem to sleep after HS upgrade
With power issues, you should first try an SMC reset. 


Shutdown your MacBook Pro,
Connect the power adapter to the Mac,
On the MacBook Pro’s keyboard, hold down the Shift+Control+Option keys and the Power button at the same time,
Release all keys and the power button at the same time – the little light on the MagSafe adapter may change colors briefly to indicate the SMC has reset
Boot your Mac as usual.