Questions & Answers for Apple 60W MagSafe 2 Power Adapter (MacBook Pro with 13-inch Retina display)

No. MacBooks and other laptops can't be charged by USB because USB ports can't handle the amount of wattage it takes to charge a battery of that size. The iPhone, for example, only requires a minimum of 5W to charge, while MacBook chargers start at 60W.

• Answered by Douglas C from Bloomfield
• 26-Nov-2012
• Flag as inappropriate Answer (can I charge my macbook through the USB?)

Yes it is. Power adapters for Intel-based Apple notebooks are available in 45W, 60W, and 85W varieties. Although you should always use the proper wattage adapter for your Apple notebook, you can use an adapter of a higher wattage without issue.

Source: Apple Tech Article: HT2346

• Answered by Eric D from Alexandria
• 23-Jan-2013
• Flag as inappropriate Answer (Is a 85w Magsafe Pro2 Power adapter compatable with a MacBook Pro with 13-inch Retina display?)

Yes, as far as I've checked and tested: using the old extension cord from a busted magsafe on the new retina pro magsafe in office and the new one at home, so I don't drag the extension cord with me everytime along with the magsafe adapter brick. It's just a basic electric cord that works with all Apple power adapter bricks, even the iPad ones. You can even check it has the same specs written on the cable.

To be perfectly clear, we are talking about just the extension electrical cord from the outlet to the magsafe brick, and not the magsafe adapter itself.

• Answered by Bozidar J
• 6-Jan-2015
• Flag as inappropriate Answer (Can I use 85 w magsafe power extension cord with my newer 60w power adapter?)

MagSafe 2 is Apple's update to their power supplies. It's more energy-efficient, charges faster, doesn't heat up as much, and is more difficult to break.

The MagSafe 2 magnetic connection is more shallow than the MagSafe was, which could reduce the risk of poor connection caused by a bend on the connector.

You could use an adapter to convert a MagSafe to a MagSafe 2 connection, but I don't think it will cause it to charge more efficiently. Be careful to always use the correct wattage on your computer, too. Just because the connection fits doesn't mean it should be used to charge your laptop.

• Answered by Dustin H from Fort Wayne
• 20-Nov-2015
• Flag as inappropriate Answer (what's the difference between apple 60W magsafe 2 power adapter & 60W magsafe power adapter)