The difference is that the 45W power adapter has less power, and it may not charge fast enough while MacBook Pro is under heavy load.

However, it is possible to use a 45W MagSafe 2 charger (the one that comes with MacBook Air) without any issues. When using a charger from MacBook Air with a more powerful MacBook Pro expect a longer charging time.įor example, a MacBook Pro 13-inch 2012-2015 requires 60W MagSafe 2 charger.

Using MacBook Air charger for MacBook ProĪccording to Apple, it is acceptable to use power adapters with different wattages with MacBooks with a caveat. They also differ by wattage.įor instance, the MagSafe 2 power adapter comes with 45W, 60W, and 85W variations. Are all MacBook chargers the same?Īs you can see from the table below, there are four different types of MacBook chargers: USB-C, MagSafe 2, L-shaped MagSafe, T-shaped MagSafe.

The table also has an Amazon link which I can use to order the charger I need.īut before you proceed with the purchase, let me answer some commonly asked questions about MacBook chargers.Ĭlick here to scroll down to tables. Now I can locate my laptop in the MacBook Pro 13-inch model table and see that I need 60W MagSafe 2 power adapter. For instance, in the screenshot above, I have MacBook Pro (Retina, 13-inch, early 2015).

2017 mac pro power