Galaxy Nexus Extended Battery 50% Off
The galaxy nexus extended battery (2100mah) fits the SGS2 however you won't be able to use the battery door. I have a cover case that still fits without the battery door.
Just wanted to let you guys know that Verizon is having a 50% off deal on the extended battery ($50 retail; $27 total including taxes). Great deal IMO considering that this is from Samsung and not a 3rd party brand.
I just got mine at the Verizon store and charging it now. Will condition a bit and post back with updates and pictures. Feel free to ask any questions.