Okay, so I bought a brand new rMBP this year. I placed my 2007 MBP in its box, for safekeeping about 6 months ago. I took it out tonight, and the battery had "exploded". Luckily, it hadn't damaged the computer. But... WTF? My new rMBP has a battery sealed inside it. At what point should I expect, (because it's 7 years old?), that the battery inside explodes and rips the case apart, completely destroying the computer? I'm seriously very concerned about this. I didn't realize the battery was a bomb, and I can't even take the thing out of my new rMBP. It's just stuck inside. If it's relevant to anyone who wishes to "protect" Apple from my complaint, the computer was simply stored inside the box, with the battery at half-charge as recommended, sitting in my closet. I opened the box today and was shocked. I have an "icebook" that's much older, checked on it - it's all good. I am seriously leery of the problem - primarily, again, because the battery in this $3000 machine is soldered inside it. And there is no such thing as a 7 year AppleCare warranty. I have an Apple /// in my junk room that (probably) still boots up - it did about a year ago. So this is something completely new to me - and it makes me very sad to think I might now own an Apple computer that is set to self-destruct. That's not cool.