I bought 2 chargers from them the first failed after about 3 months and at the end of its life was getting extremely hot and actually caused some damage to the charging port on my mac. The second charger i've now had for about 2 weeks and it is already starting to heat up. What happens is the metal connectors on the charger itself get so hot they actually burn themselves down to a nub so the connectors eventually wont connect. Save your money and buy an original charger