Questions & Answers
Rechargeable Battery - 15-inch MacBook Pro
114 Questions + 83 Answers
114 Questions from the Community
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Does it harm the battery or reduce battery life, to use the AC adaptor for extended periods while the battery is fully charged?
- Asked by David M from Millville
- 28-Oct-2009
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Best Answer
I would have to disagree with the others who say that it hurts your battery & reduces battery life by keeping your AC adapter plugged in with a full battery.
I have done extensive research and asked many apple employees and have always come to the same conclusion. They all say to keep your laptop plugged into an power supply whenever possible. Only use your battery if you have to, in those times when you are not near a power supply.
Every time you use your batteries power you are adding to the amount of cycles your battery can cycle. If you continually charge your battery to 100% and then take it off the AC Power, and use it all the way down to 0% or even 50% you are taking away from the batteries lifespan. And eventually your battery will not be able to hold a full charge, and eventually will not hold a charge at all, and you will have to buy a new one!
Use your AC Power as much as you can, but remember to calibrate your battery at least once a month to maintain proper battery health.
To calibrate your battery:
In Finder, Click Help and type in: "calibrate battery"
Then select: "Calibrating a portable computer battery" Help Topic
Follow instructions.
Hope this helps ease your mind and keeps you with a healthy battery! Cheers!- Answered by Shawn O from Lockhart
- 15-Feb-2010
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Best Answer
I found below opinion from other apple forum. It might help you.
MA348LL/A and A1175 are the same thing. MA348LL/A is the Apple part number (aka order number), A1175 is the Model Number of the battery. So, if you order MA348LL/A and actually look at the printing on the battery, you'll see Model A1175 on there.
If you're referring to the batteries available on Amazon, check one of the reviews for the less expensive A1175 item:
When they say 'original' Apple laptop battery they mean that literally. The battery I received had a serial number ending in U7SB - one of the orginal MacBook Pro battery packs manufactured between February 2006 and May 2006. These batteries were found to be defective and are subject to an Apple product recall. Fortunately, with some persuasion, I was able to convince the local Apple store to exchange the battery pack for an updated one. The Apple battery recall website will not validate you for an exchange unless you have a MacBook Pro with an early serial number.
One of the risks of buying batteries from 3rd party vendors is getting old stock. For some things (e.g. a power adapter) that's not much of an issue. But lithium-based batteries have a useful life of 400-500 charge cycles or 3-4 years - whichever comes first. Shelf life counts against that time - there's a continuous chemical reaction occurring in the battery, and buildup of oxidation products - and the latter is actually worse if the battery is not being used. So, if you buy a battery that was made 2 years ago, you can expect to get 1-2 years of use from it (probably closer to 1), not 3-4.
My advice - get the more expensive one, or even pay the extra $10 and buy direct from Apple (it's not necessarily $10 more, since Apple offers free shipping and the 3d party vendors on Amazon who charge less than Apple may charge for shipping).
Hope this helps...- Answered by Yongjin P from Chicago
- 27-Jan-2010
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What is the warranty on a replacement battery?
- Asked by Casey K from Tampa
- 09-Oct-2009
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Best Answer
Apple’s standard for battery deterioration is that the battery should hold at least 80% of it’s maximum charge capacity after 300 cycles. Under normal circumstances, this means roughly 2 years. Granted, everyone has a different definition of normal usage but Apple usually won’t deal with a battery if it’s been through over 300 cycles or three years or age.
- Answered by Chi-wang Y from Los Angeles
- 24-Oct-2009
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macbook A1260 battery
Need a battery for macbook pro 15 inches modelA 1260
thanks could not find it in the portland oregon store- Asked by Walid M from Concord
- 07-Dec-2009
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Best Answer
Yes I think this is the one. At the bottom of battery you should find battery model number. If I am not wrong then it will be A1175. Any battery that replaces A1175 will be suitable for your laptop. Tech Specs should include 10.8V Capacity: 5800 mAh 6 Cell Color: Silver Battery Type: Li-Polymer.
- Answered by Pankil S from Lowell
- 27-Dec-2009
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How is the right battery for a MacBook Pro (Early 2008) 15 inch model?
I need to purchase a new battery for my MacBook Pro 15" and I need to know what is the right model.
Thanks
Alexandre Horta- Asked by Alexandre C from Sao Paulo
- 15-May-2010
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-
Best Answer
To calibrate the battery:
Plug in the MagSafe power adapter and fully charge the MacBook or MacBook Pro battery until the light on the MagSafe connector changes to green and the Battery icon in the menu bar indicates that the battery is fully charged.
Allow the battery to rest in the fully charged state for two hours or longer. You may use your computer during this time as long as the power adapter is plugged in.
Disconnect the power adapter with the computer on and start using it with battery power. When the battery’s charge gets low, you’ll see the low battery warning dialog on the screen.
Continue to keep your computer turned on until it goes to sleep. Save your work and close all applications when the battery’s charge gets low and before the computer goes to sleep.
Turn off the computer or allow it to sleep for five hours or longer.
Reconnect thepower adapter and leave it connected until the battery is fully charged. You may use your computer during this time.- Answered by Kevin B from Greeley
- 31-Oct-2009
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I have a 2006 15-inch MacBook Pro with a battery Model No. A1175 -- will this replacement battery work?
- Asked by Patricio E from Sunny Isles Beach
- 24-Nov-2011
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Best Answer
In short, Yes, this battery will replace a battery No. A1175.
This is from another apple forum:
MA348LL/A and A1175 are the same thing. MA348LL/A is the Apple part number (aka order number), A1175 is the Model Number of the battery. So, if you order MA348LL/A and actually look at the printing on the battery, you'll see Model A1175 on there.- Answered by Scott M from New York
- 20-Feb-2012
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charging battery for the first time
How long does the battery needs to be charged for the first time on macbook pro 15.
- Asked by Alam H
- 20-Nov-2009
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Best Answer
Just plug in your ac adapter and use the computer. Ensure the battery if fully charged before using it on battery power and let it drain all the way down before the next charge. From then on, use the battery about once a week till it is all the way down and you are getting those "Save your work now" messages" and let it charge all the way up again. You can use the computer while it is charging. All of this is from the a recent Genius Bar appointment where they told me my battery was failing for lack of use and that it had a very low number of cycles on it and that was not good for it.
- Answered by Jeffery S from Denton
- 11-Oct-2010
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I have a 2006 17-inch MacBook Pro with a battery Model No. A1189 -- will this replacement battery work?
- Asked by Randy P from Houston
- 20-Nov-2010
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how long does a battery last on a macbook (aluminium)
- Asked by Michelle S from Sudbury
- 26-Dec-2009
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Best Answer
Realistically this battery will last around 3 hours as long as there is not heavy usage of the CPU or GPU. So as long as you are doing basic things like e-mail, web surfing, etc you should get decent life out of it. Also turning down brightness, running only 1 program at a time, and turning off bluetooth will all help preserve battery life. Also running it in cycles and using a battery keeper program will help to extend the life. I am a photographer and if I am doing light photo editing I can pull 2-4 hours out of this battery as long as I adhere to the aforementioned guidelines.
- Answered by Michael S from Paramus
- 25-May-2011
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is the battery covered under apple care?
- Asked by Anthony O from Ojai
- 19-May-2010
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Does Apple recycle old 15-inch MacBook Pro Rechargeable Batteries? I just bought a new one to replace my old, dead battery.
- Asked by Janet W from Leawood
- 10-Feb-2010
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Best Answer
Yes, I believe that any Apple Store will take care of your old battery for you.
- Answered by Chris C from Calgary
- 24-Feb-2010
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My present battery is an ASMB012. Will this be a suitable replacement?
- Asked by Sarah P from Moncton
- 07-Dec-2009
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Answer
Yes, this battery is a replacement for MacBook Pro model A1226 with battery model no. A1175.
- Answered by Bruce M from Newark
- 16-Jan-2012
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Is this compatible with my 15" Macbook Pro model A1226 to replace a battery model A1175?
- Asked by Lauren S from Lafayette
- 15-Dec-2011
- Flag as inappropriate
Answer
Yes, this battery is a replacement for MacBook Pro model A1226 with battery model no. A1175.
- Answered by Bruce M from Newark
- 16-Jan-2012
- Flag as inappropriate
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Can both the MA348LL/A be used in a MacBook pro 15, where it replaces the A1175 ?
- Asked by Sarah E from Arlington
- 05-Jan-2010
- Flag as inappropriate
Best Answer
I found below opinion from a apple-forum. It might help you.
MA348LL/A and A1175 are the same thing. MA348LL/A is the Apple part number (aka order number), A1175 is the Model Number of the battery. So, if you order MA348LL/A and actually look at the printing on the battery, you'll see Model A1175 on there.
If you're referring to the batteries available on Amazon, check one of the reviews for the less expensive A1175 item:
When they say 'original' Apple laptop battery they mean that literally. The battery I received had a serial number ending in U7SB - one of the orginal MacBook Pro battery packs manufactured between February 2006 and May 2006. These batteries were found to be defective and are subject to an Apple product recall. Fortunately, with some persuasion, I was able to convince the local Apple store to exchange the battery pack for an updated one. The Apple battery recall website will not validate you for an exchange unless you have a MacBook Pro with an early serial number.
One of the risks of buying batteries from 3rd party vendors is getting old stock. For some things (e.g. a power adapter) that's not much of an issue. But lithium-based batteries have a useful life of 400-500 charge cycles or 3-4 years - whichever comes first. Shelf life counts against that time - there's a continuous chemical reaction occurring in the battery, and buildup of oxidation products - and the latter is actually worse if the battery is not being used. So, if you buy a battery that was made 2 years ago, you can expect to get 1-2 years of use from it (probably closer to 1), not 3-4.
My advice - get the more expensive one, or even pay the extra $10 and buy direct from Apple (it's not necessarily $10 more, since Apple offers free shipping and the 3d party vendors on Amazon who charge less than Apple may charge for shipping).
Hope this helps...- Answered by Yongjin P from Chicago
- 27-Jan-2010
- Flag as inappropriate
-
Does this work for unibody?
I am buying a macbook pro that needs a new battery. Can this battery be used for the unibody macbook pro?
- Asked by Kailee S from Rosemount
- 04-Sep-2011
- Flag as inappropriate
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Is this the Sony ASMB012, please?
Battery for 15" aluminum MacBook Pro, NOT unibody
- Asked by Phyllis E from Cold Lake
- 24-Feb-2011
- Flag as inappropriate