Plugging a 13 inch MacBook Pro on a 85w magsafe

Pierre6405 wrote:

Is there any problem with plugging a 13 inch MacBook Pro (2011) on a 85 w magsafe power supply instead of a 60 w?

No.

Pierre6405 wrote:

How about plugging a 15 inch MBP on a 60w magsafe power supply?

Not a good idea.

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

For instance If you have a MacBook (13-inch Late 2009) that normally uses a 60W adapter, you can also use an 85W adapter with that computer. You would not use a 45W adapter with that computer; it would not provide enough power for that MacBook. Using an adapter of higher wattage than the adapter that came with the computer will not cause the computer to charge more quickly or otherwise operate any differently than using the adapter that came with the computer. "

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

No the adapter is RATED to put out UP TO 85 watts. It does not supply that wattage constantly.

So you are safe to use a 85 watt adapter on the 13" MBP that originally came with the 60 watt adapter.

Although you could use the 60 watt adapter on the 15" model it is not recommended because it can not supply enough power to both run the computer and charge the battery at the same time.

very welcome 🙂