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Interchangable MB & MBP Power Adapters?
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Mac Elite
Join Date: Oct 1999
Location: Bloomington, IN, USA
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We have some Macs at work and I was wondering whether we could put a single power adapter at our conference table to power both our MacBooks and our MacBook Pros. I think we currently have a MacBook power adapter available, although I have read that some people have had success with MBP adapters on MBs. Does anyone know whether you can use a MB power adapter on a MBP?
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MP 4x2.66 10/240GB SSD RAID 0+4 Drive RAID 0&1 MBP 2.8/6/1TB RAID 0+SSD Mini 2.26/4/120 iPhone 4 32G iPad 3G 64G
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Senior User
Join Date: Mar 2007
Location: Illinois
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I am sure it will be ok, but not sure if its safe because of MBP's more power usage than MB.
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Forum Regular
Join Date: Feb 2007
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In theory you should be able to use a MBPro adapter on both but probably not a good idea to try the MB adapter on the MBP - might not be enough power if needed.
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Mac Elite
Join Date: Oct 1999
Location: Bloomington, IN, USA
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Thanks. That's what I figured. I know that with previous models, there were different power adapters people used that allowed for faster charging of batteries, though they would work on less. Does anyone know for sure?
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MP 4x2.66 10/240GB SSD RAID 0+4 Drive RAID 0&1 MBP 2.8/6/1TB RAID 0+SSD Mini 2.26/4/120 iPhone 4 32G iPad 3G 64G
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Posting Junkie
Join Date: Nov 2000
Location: in front of my Mac
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Both adapters work with both Books. However, when you use the MB adapter (60W) it will only charge the MBP's battery when the MBP is sleeping. You can however run a MBP off the MB adapter just fine if you don't care about charging. The MBP adapter (85W) will not overcharge or damage a MB.
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Dedicated MacNNer
Join Date: Jan 2007
Location: Oakland, CA
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This relationship is basically the same for Powerbooks and iBooks. Just thought I would mention it in case someone was wondering.
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17" MBP C2D 2.33/3 GB RAM/500 GB 7200 rpm/Glossy Display|-|
17" iMac CD|-|15" PB G4 1.25 GHz|-|iBook g4 1Ghz|-|Pismo
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Forum Regular
Join Date: Feb 2007
Location: Brushton, New York (middle of nowhere)
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Originally Posted by Simon 
Both adapters work with both Books. However, when you use the MB adapter (60W) it will only charge the MBP's battery when the MBP is sleeping. You can however run a MBP off the MB adapter just fine if you don't care about charging. The MBP adapter (85W) will not overcharge or damage a MB.
Apple then should make just one adapter for both 'Books.
But I still like the idea of the smaller adapter. Makes me hold out hope on a 12 inch MBP.
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The Mac Collection:
Power Mac G4 Sawtooth at 450MHz, Power Mac G4 Gigabit Ethernet at 400MHz, three Power Mac FW800's at 1.0GHz, MacBook Pro at 2.0GHz, my late father's G3 iMac at 350MHz, an iMac at 500MHz, a PowerBook G4 (12-inch VGA) and a PowerBook 170
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Mac Elite
Join Date: Oct 2000
Location: Memphis, Tn. USA
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Originally Posted by Simon
Both adapters work with both Books. However, when you use the MB adapter (60W) it will only charge the MBP's battery when the MBP is sleeping. You can however run a MBP off the MB adapter just fine if you don't care about charging. The MBP adapter (85W) will not overcharge or damage a MB.
The 85W adapter will only put out the number of amps drawn by the computer. I agree the 85W MBP adapter is the better choice for universal use!
It is like putting a 40W bulb in a lamp rated for 100W.... it will only draw what is needed!
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Moderator  Join Date: Oct 2001
Location: San Jose, CA
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MB = lower cost. The 85 W adaptor is more expensive.
Steve
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Posting Junkie
Join Date: Nov 2000
Location: in front of my Mac
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The MB adapter is smaller and cheaper.
It absolutely makes sense to have both. The minority that can afford to have both Books and an additional charger can probably also afford to buy the more expensive charger.
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Dedicated MacNNer
Join Date: Jul 2006
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cheaper by what 10 bucks? I would rather spend 10 bucks and have my MBP charging rather than just running.
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15" MacBook Pro | 2.16GHz | 2GB DDR2 | 100GB 5400 rpm | 256MB X1600
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Moderator Join Date: Oct 2001
Location: San Jose, CA
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Originally Posted by Frugle
cheaper by what 10 bucks? I would rather spend 10 bucks and have my MBP charging rather than just running.
Every penny counts when you look at the bottom line. When I was at Apple, we tried to use the fewest components possible, and we're talking about resistors and caps that cost fractions of a cent. $10 is a huge savings.
Steve
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