There was juice in my MBP mid 2011. It spilled above the optical drive through the keyboard and trackpad. I immediately had the computer open and removed the board. I need the toolkit for the tri-lobe bit to remove the battery.
With the proper tools the repair went quickly and well. The toolkit arrived on time but my leasing office could not find it for almost 3 days. When I did receive it, I removed the battery and got all of the juice out of the chassis.
Always have the proper tool before getting started.