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MagSafe Compatibility New/Old
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Mac Elite
Join Date: Oct 1999
Location: Carmel, IN, USA
Status:
Offline
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I see that there's a revised MagSafe power adapter for the new MBP/MB. Does anyone know if it's just an aesthetic change or if they're incompatible with the old units? i.e. if I have a spare old MBP power adapter, can I use it with a new one, and can I use the new power adapter with older MB/MBPs. As I understand it the older MB and MBP can use the old MBP power adapter, which was a large brick.
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Moderator  Join Date: Oct 2001
Location: San Jose, CA
Status:
Offline
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MagSafe is MagSafe, so it should work everywhere. The only difference to be aware of is the wattage of the adapter. You can use a lower power MB adapter with an MBP, but you won't be able to run the machine and charge the battery at the same time (you'd have to sleep it or shut it down to charge).
Steve
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Celebrating 10 years and 4000 posts on MacNN!
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Mac Elite
Join Date: Oct 1999
Location: Carmel, IN, USA
Status:
Offline
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Great. That was my take. In this case, it sounds like all MBP adapters will power any MagSafe-powered device, new or older.
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iMac Late '15 5K 27" 4.0 Quad i7 24/512GB SSD OWC ThunderDock 2 Blu-Ray ±RW MBP '14 Retina 15" 2.6 16/1TB iPhone 7+ 128 Jet Black iPad Pro 128 + Cellular
FOR SALE: MP '06 Yosemite 8x3.0 24/240GB SSD RAID 0, 240GB SSD, 1.5TB HDD RAID 0, 1TB HDD, Blu-Ray±RW, Radeon HD 5770
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Forum Regular
Join Date: Oct 2002
Location: New York
Status:
Offline
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This is slightly off-topic, but, how does it work with higher-powered adapters? I have a couple MacBook Pro MagSafe adapters, will they work if I get a new MacBook? Will they mess up the battery?
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Moderator Emeritus
Join Date: Apr 2001
Location: Wasilla, Alaska
Status:
Offline
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85w (macbook pro) adapters are fine for all laptops.
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Forum Regular
Join Date: Oct 2002
Location: New York
Status:
Offline
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Thanks! 
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