Can I use an 85Watt power adapter with my 13" Macbook?

[mrsundaynight]

My 13" Macbook Pro (brand new) came with a 60Watt power adapter. I left it at home today and need to recharge at work. Can I use the 85Watt power adapter that my friend has for his 15" MacBook Pro?

Or will it fry my 13" Macbook?

Thanks!

 

[belvdr]

It will work straight away.

 

[mrsundaynight]

It will work straight away.

Interesting. So why do they have the two different types of power adapters? Thanks...

 

[belvdr]

The 15" requires more power to run the system and charge the battery simultaneously. If you were to use a 13" brick on a 15" it would run the system, and either charge the battery slower or not charge it at all.

 

[Pixellated]

Interesting. So why do they have the two different types of power adapters? Thanks...

So they only sell the computer with an adapter as large, heavy and expensive to manufacture as they need to.

 

[miles01110]

The 15" requires more power to run the system and charge the battery simultaneously. If you were to use a 13" brick on a 15" it would run the system, and either charge the battery slower or not charge it at all.

Correction: the 15" MBPs with the discrete graphics card requires more power. The base model 15" ships with the 60W adapter.

 

[belvdr]

Correction: the 15" MBPs with the discrete graphics card requires more power. The base model 15" ships with the 60W adapter.

Didn't know that. Thanks for the update.