After 6 months of use, the charger I bought from SpeedyChargers started making my MacBook Air so hot that it could burn skin. When it stopped working all together, I took it to the Apple store and was told that it was a fraudulent, knock off from their brand. The Apple rep said I was lucky that it broke before it fried my laptop. Such a shame that ethical business practice is so hard to come by. Now, the website says "coming soon." Hopefully they've been shut down.