Battery replacement

arjen92

macrumors 65816
Original poster
Sep 9, 2008
1,065
0
Below sea level
He guys,

I have the feeling my battery is losing capacity (382 cycles) and I was thinking about getting a new battery somewhere in the coming months.

However in my country they don't really offer a service to replace the battery. And when they do it takes 3 weeks and will probably cost me way to much money.

So I was looking for a battery for my Macbook Pro mid 2010 13". I believe it's this one: http://www.everymac.com/systems/apple/macbook_pro/stats/macbook-pro-core-2-duo-2.4-aluminum-13-mid-2010-unibody-specs.html

(mine of course is upgraded with 8 RAM and the Superdrive is replaced with an SSD).

So I was looking for a battery (my younger brother is living in america) on amazon. But they all looked kind of sketchy. e.g.

I was also wondering if it would be possible to get a battery for one of the latest macbook pro's 13", which has a greater capacity (I believe). Would that work properly with my macbook pro?

Also, some of the battery's other companies are selling have a slightly different voltage (10.8 volt instead of Apple's 10.95 volt).

So which battery to buy. If anyone has advice or a reliable website where I can get a reliable battery, that would be great.
 

BreakGuy

macrumors 6502a
Nov 23, 2009
818
0
NZ, South Pacific
The built-in battery of your MacBook, MacBook Pro or MacBook Air is designed to deliver up to 1000 full charge and discharge cycles before it reaches 80 percent of its original capacity.

You shouldn't be needing to replace your battery yet...
 

brendu

macrumors 68020
Apr 23, 2009
2,414
2,256
USA
I have a mid 2009 Macbook Pro 13" and it is giving me the service battery warning. After 361 load cycles over 30 months, it has 71% capacity left. The charge lasts about 2 hours which is still okay I guess but its not great. I made an appointment to go into the apple store tomorrow to have them see what the service battery message is all about. I'll let you know what the "geniuses" say about the 80% after 1000 cycles.
 

ahjushi

macrumors newbie
Jul 3, 2010
2
0
Are you leaving it plugged in even after it's 100% charged? That will kill most batteries, MacBook and beyond. The proper care of a battery is to stop charging it once it reaches 100% and charge it again when it nears 0%. Keeping your MBP plugged in all day will destroy the battery very quickly.
 

miles01110

macrumors Core
Jul 24, 2006
19,269
30
The Ivory Tower (I'm not coming down)
Are you leaving it plugged in even after it's 100% charged? That will kill most batteries, MacBook and beyond. The proper care of a battery is to stop charging it once it reaches 100% and charge it again when it nears 0%. Keeping your MBP plugged in all day will destroy the battery very quickly.
No, it won't. This is a myth perpetuated by the uninformed.
 

ahjushi

macrumors newbie
Jul 3, 2010
2
0
No, it won't. This is a myth perpetuated by the uninformed.
Yes, it will.

batteryuniversity said:
Exposing the battery to high temperature and being at full state-of-charge for an extended time can be more damaging than cycling.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

Apple said:
Apple does not recommend leaving your portable plugged in all the time.
http://www.apple.com/batteries/notebooks.html

Based off my own anecdotal observations, my roommate and I both got the mid-2009 MBP when it first came out, give or take a few days. He left his plugged in 24/7/365, I disconnected mine every time it reached 100% charge. His battery lasts about an hour now while mine lasts about three.
 
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GGJstudios

macrumors Westmere
May 16, 2008
44,417
751
Are you leaving it plugged in even after it's 100% charged? That will kill most batteries, MacBook and beyond. The proper care of a battery is to stop charging it once it reaches 100% and charge it again when it nears 0%. Keeping your MBP plugged in all day will destroy the battery very quickly.
That is false. Don't depend on batteryuniversity.com for accurate information about the battery technology used in Apple notebooks.
Based off my own anecdotal observations...
This is an even less credible source of information than batteryuniversity.com.

If you leave an Apple notebook plugged in, it will stop charging when the battery is full. It will not overcharge. Also, you don't need to wait until it nears empty before plugging in again. You can unplug/plug in anytime you need to. The only caveat is to not run plugged in 24/7 for extended periods, as the battery needs to be used periodically to stay healthy. For accurate information that relates directly to Apple notebook batteries, read the following instead of batteryuniversity.com. This should answer most, if not all, of your battery questions: