Just replaced the trackpad on a Macbook Pro A1502. The customer had used the item very little and the trackpad had just failed completely. I found a seller on ebay with a brand new part and went about replacing it. The pentolope screws should have been no problem but one was cross threaded and would not come out. We had to drill it out. Big pain in the butt. Having swapped trackpads in Macbooks before this by comparison was much harder. The battery is glued in but upon further inspection it looks to have been designed to screw in and even has screw holes in the chassis and covered screw holes in the battery. This design seems to go along with the throw away mentality of apple. Apple store said water damage but there was none at all. They wanted 400$. The previous Macbook model they year before had recalled Trackpad issues but not this one???. Really crappy Apple dropped the ball on this one accusing customers of damage and doing nothing to replace a defective part. Thank You for the great fix it!!