As I mentioned in a recent thread, my rMBP battery was only lasting about 2 hours on a full charge and my computer indicated that the battery needed to be serviced. I took it to the Apple store a few days ago and, after running a quick diagnostic program, the tech said that the battery would need to be replaced (along with the entire top case, as is the standard procedure) and it would take a day or two for the part to arrive. This morning, I dropped my rMBP off at the store for repairs and hoped for the best. This evening, I received a call from a store manager who told me that upon disassembling my rMBP, they discovered that my stock battery had expanded and started to "rip." They immediately placed it in a fire box "in case it might explode overnight" and described the battery's condition as a "safety issue" (her words exactly). After replacing the parts and putting everything back together, the techs discovered that the new battery was also faulty. They ordered yet another top case and battery assembly, which may not arrive until after Labor Day. I'm a bit concerned that the battery is not the actual source of the problem, since two faulty batteries in a row seems like extraordinarily bad luck, and I'm also a bit worried about any damage the first battery might have caused to nearby parts. I suppose time will tell. Any thoughts?