Here's Why Apple's iPhone Chargers Are So Expensive

Apple Charger Teardown
Ken Shirriff

Here's the the question: you can charge an iPhone with any AC-to-USB adapter. So how does Apple get off charging $29 for theirs? Ken Shirriff took one completely apart to figure it out, and it turns out, Apple's charger goes above and beyond what's needed--it's legitimately more complex and sturdier and more capable than other chargers. Upgrades include "super-strong AC prongs, and the complex over-temperature / over-voltage shutdown circuit," as well as a bunch of hardware designed to keep electromagnetic interference to a minimum. Of course, the added hardware probably costs a dollar, and Apple sells it for $20 more than competitors, but still! Teardowns: so useful! [via @mattbuchanan]