Power Supply Question

[KlytusLord]

Hi all,

Are there any issues with charging a MBA with the MBP's power unit?

The Air's is slightly smaller, but with my setup it is simplest to just swap the computers using the same power supply.

Thanks.

 

[MrCheeto]

As a rule, if it plugs in without any problem what-so-ever, it will work fine.

 

[EthanMiller]

The MBP charger will work fine with the Air, but not vice versa. The 45-Watt Air charger can't provide enough for the MBP, but the 60 (or perhaps 80)-Watt MBP charger can provide enough for the MBA, and it can tell the charger not to throw too much at it.

That information is also on Apple's site if you want to look for it.

 

[Cynicalone]

It works just fine.

It's the same concept as the Thunderbolt display it provides 85W maximum and the MacBook Air will just use 45W.

 

[AppleTech22]

Can anyone confirm if the Air simply tells the charger to stay at 45 or can it be charged faster with the 60 or 85?

 

[jcg878]

Can anyone confirm if the Air simply tells the charger to stay at 45 or can it be charged faster with the 60 or 85?

It will not charge any faster. 45W is all it will get. Read here

 

[MrCheeto]

Can anyone confirm if the Air simply tells the charger to stay at 45 or can it be charged faster with the 60 or 85?

Devices draw only as much wattage as they need. That's why you can plug a 40w and 100w bulb into the same socket. Right? Right.