Advanced No Spark Design: Equipped with advanced SoC(System on Chip) modules, can effectively avoid the spark when you’re charging like the original MacBook Pro charger adapter. No current is outputted when the magnetic tip does not connect completely with your MacBook. It works only when the tip and charging port connect perfectly and then the spark would never appear.
Adaptive Charging Technology - Tuned to provide the safest maximum recharge rate for all USB powered devices with a dedicated output of up to 2.1A per USB Port. The replacement power adapter can rapid charge you MacBook, iPads, iPhones, iPods, Smartphones, Samsung Galaxy Tab Media Players, Game Devices, GPS Devices, and other digital devices.
Protection Features: A new generation of Synchronous Rectifier (SR) controller ICs is used to obtain under-voltage protection and internal over-temperature protection. Its high level of integration allows the design of a cost-effective power supply with a very low number of external components.
Probably the Best Charger with High Charging Efficiency: Combined NXP synchronous rectifier controller and primary feedback control functionality, WEGWANG 85W MagSafe 1 L-tip adapter improves efficiency and prevents product from overheat and short usage time.