This Apple 45W Magsafe 2 power charger will charge your battery while turned on, turned off or in sleep mode and has a magnetic connector which protects the 45W power adapter and the MacBook Air laptop. The design of the Mac Magsafe 2 power adapter means that if someone walks past your MacBook Air while it is plugged into the mains power and knocks the Magsafe 2 mains adapter cable, it will simply disconnect and not break the charging port since it is held in place via the magnetic connection between the Magsafe 2 power charger and your MacBook Air. This serves to minimize strain on the Magsafe 2 power port and MacBook Air power cable.
When the Magsafe 2 connector is connected to your Magsafe 2 power port and your plug is switched on an LED located on the top of the DC connector will light up. Amber LED will shows that your MacBook Air is charging and when the light turns green, you have maximum charge.The new 45 Watts Apple Magsafe 2 power adapter comes a with UK charger cable plug and boasts the following characteristics: