When the time came and your battery died, you were probably thinking you'd have to send your iPhone off to Apple as part of their expensive and complicated battery replacement program -- but now you've got a sketchy DIY option instead. Once again, a mysterious Chinese company has stepped in and "created" a "solution" to your problem with its iPhone battery replacement kit. For just $20, which is cheap enough to elicit genuine concern, you get a 1400mAh, 3.7V iPhone battery, some type of screwdriver-like tool, a strange plastic shiv, and an instruction manual (presumably in English, but you never know). All you have to do is crack open your $600 phone, de-solder your old battery and solder in the new one... and probably some other, more complicated stuff too. At this price, it seems unlikely that this battery won't explode, so buy at your own risk, and definitely try at your own risk.