HT3964: Intel-based Macs: Resetting the System Management Controller (SMC)

Learn about Intel-based Macs: Resetting the System Management Controller (SMC)
ian.horelacy
Level 1 (0 points)

Q: can you use an 85 watt adapter on a macbook air which normally takes 45 watts?  or vice versa?

can you use an 85 watt adapter (Macbook Pro 15") on a 12" macbook air which normally takes 45 watts?  or vice versa?

MacBook Pro

Posted on May 5, 2013 1:13 AM

by dominic23,Solvedanswer
dominic23 dominic23
Level 8 (42,105 points)
Mac OS X
A:

Charger wattage

Quote from below linked article from Apple

"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."

You would not use a 45W adapter with that computer; it would not provide enough power for that MacBook.

http://support.apple.com/kb/HT2346

Posted on May 5, 2013 1:39 AM

Close
ian.horelacy

Q: can you use an 85 watt adapter on a macbook air which normally takes 45 watts?  or vice versa?

  • All replies
  • Helpful answers

  • by dominic23,Solvedanswer

    dominic23 dominic23 May 5, 2013 1:39 AM in response to ian.horelacy
    Level 8 (42,105 points)
    Mac OS X
    May 5, 2013 1:39 AM in response to ian.horelacy

    Charger wattage

    Quote from below linked article from Apple

    "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."

    You would not use a 45W adapter with that computer; it would not provide enough power for that MacBook.

    http://support.apple.com/kb/HT2346

  • by LowLuster,Helpful

    LowLuster LowLuster May 5, 2013 1:51 AM in response to ian.horelacy
    Level 6 (12,074 points)
    May 5, 2013 1:51 AM in response to ian.horelacy

    Yes you can use the 85W adapter on either system but you can't use the 45W adapter on the 15" mac. It simply does not supply enough wattage for the 15" model.