I don't know why, but last night my computer didn't fully go to sleep, or maybe something else is wrong. I don't know. What I do know is that I put it to sleep with 30% battery life and ended up waking it up about 10 hours later to have it say I only have 5% battery life.
It wasn't this way on ML.
Heck, it wasn't this way in Mavericks until GM.
It wasn't this way on ML.
Heck, it wasn't this way in Mavericks until GM.