Replacement Charger for Mac 65w Magsafe compatible with MacBook air / MacBook models
The 85 Watt MagSafe Power Adapter features a magnetic DC connector that ensures your power cable will disconnect if it experiences undue strain and helps prevent fraying or weakening of the cables over time. In addition, the magnetic DC helps guide the plug into the system for a quick and secure connection.
By default, the MacBook Pro uses an 85W power adapter, while the MacBook uses a 60W power adapter. Both adapters use the same MagSafe connection point that will fit either model. ... It will provide ample power to both the MacBook Pro and MacBook, and will not damage the latter despite a higher-than-necessary wattage