*The 45W MagSafe 2 Power Adapter is a new model of Apple,it protects from about 3800V input; Reached UL,TUV safty certificates standards; Avoiding hurt or adapter broken due to any high voltage caused by lightning strike or other reason. all the 45W MagSafe 2 Power Adapter are both use best PCB IC and other material, to make sure it is safe and durable, our laptop charger adapter is the best quality of Chinese replace adpaters.