First time battery replacement experience
5 - 15 minutes
My Macbook Pro Mid2010 model had a batter yon the verge of dying.
It was a little scary, but it went pretty smoothly. It took about five minutes.
I was surprised by the amount of debris and dust that had found its way into the unibody. I'd suggest having a can of air dust handy.
Phillips #00 Screwdriver
Tri-point Y1 Screwdriver
MacBook Pro 13" Unibody (Mid 2009 to Mid 2012) Battery