Great guide, I had this done in 30mins using the ifixit battery replacement kit. I've a background repairing laptops and I can see this would be tricky for someone with no experience. The existing adhesive teared away on me right away. I used the supplied green spudger and got it under the battery and very gently applied upward pressure using my thumb as a fulcrum point. After about 50 seconds the battery lifted out cleanly. The rest went to plan. Great little repair kit too, well worth the extra money to have the right tools. Thank you ifixit!