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A Macbook Pro
Jan 7, 2011, 09:24 AM
Quick question, can I charge the new MBA with my 15" MBP charger? I don't want to take 2 chargers on my trips so which one do I take to allow charging of both devices?



tmoerel
Jan 7, 2011, 09:53 AM
Quick question, can I charge the new MBA with my 15" MBP charger? I don't want to take 2 chargers on my trips so which one do I take to allow charging of both devices?

Yes you can. It works well. Just make sure to take the MBP charger as the MBA charger is not really powerful enough to charge your MBP.

A Macbook Pro
Jan 7, 2011, 08:10 PM
Yes you can. It works well. Just make sure to take the MBP charger as the MBA charger is not really powerful enough to charge your MBP.

Sweet, thanks. Can anyone confirm this? I just want to make sure I don't damage any of my computers.

hfg
Jan 7, 2011, 08:15 PM
You will be fine with the higher capacity Pro charger. They put out the same voltage and the current capacity is adequate for either computer. Just take the one charger on the road.

-howard

s2dio
Jan 10, 2011, 07:50 AM
I have a question regarding this - will the Macbook Pro's charger charge the MBA faster since it's more powerful?

hfg
Jan 10, 2011, 10:47 AM
I have a question regarding this - will the Macbook Pro's charger charge the MBA faster since it's more powerful?

No ... the charging rate is controlled by the computer.

-howard

2IS
Jan 10, 2011, 11:55 AM
No ... the charging rate is controlled by the computer.

-howard

Im not so sure that's entirely accurate. I haven't experimented with the MBA but my experience with other laptops is that If the laptop is off they will likely charge at the same rate, but if it's on and especially if it's doing intensive tasks that require a lot of power, the charge rate of the lower capacity chargers will slow to a crawl since most of their capacity is being used to power the machine vs higher capacity chargers that still have enough reserve to charge the battery at a decent rate.

bamf
Jan 10, 2011, 12:34 PM
Sweet, thanks. Can anyone confirm this? I just want to make sure I don't damage any of my computers.

I've been using a 15" MBP power supply to charge my MBA since I got it - it's fine.

hfg
Jan 10, 2011, 12:49 PM
Im not so sure that's entirely accurate. I haven't experimented with the MBA but my experience with other laptops is that If the laptop is off they will likely charge at the same rate, but if it's on and especially if it's doing intensive tasks that require a lot of power, the charge rate of the lower capacity chargers will slow to a crawl since most of their capacity is being used to power the machine vs higher capacity chargers that still have enough reserve to charge the battery at a decent rate.

Yes, this is true, the operating needs override the charging needs of a computer in use. However, the OP was only asking about charging the computers he was taking on the road to avoid carrying multiple chargers, and was planning on taking the larger 85w unit with him. That charger will work fine with the MBPro and the MBAir that were mentioned.

-howard