Frederic1943, This is a design/manufaturing issue, not normal wear. If you look around you will see this has been going on for a long time and Apple refuses to make it right. I will use the MacBook with the battery not installed until I can afford to buy a new laptop, but I will never buy a battery to fix what Apple messed up.
There’s one problem with running your MacBook with the battery removed. MacBooks and MacBook Pros automatically reduce the processor speed by about half when the battery is removed.
Having the same issue.
Can anyone tell me which battery I have? I will probably buy a replacement off eBay.
Serial Number: SMP-ASMB016-3882-c86
Device name: ASMB016
Pack Lot Code: 0000
PCB Lot Code: 0000
Firmware Version: 0110
Hardware Revision: 0200
Cell Revision: 0102
Charge remaining (mAh): 4562
Fully charged: Yes
Full charge capacity (mAh): 4587
Cycle count: 198
Battery Installed: Yes
Amperage (mA): 0
Voltage (mV): 12517
I can't help you with battery size/type but I bought a replacement—i think $29 US—and it has so far worked OK. It has not inflated as the OEM battery and seems to hold a better charge.
I think the battery has markings on the battery itself that will tell you the model number and then you can search Amazon or eBay. I think I bought mine on Amazon. And finally, send a note to a seller and they can tell you what you need.
I too noticed that my battery in my unibody macbook pro was swollen. My macbook pro is about a year out of warranty. After reading the numerous post, I decided to take a chance and made a appointment at the genus bar.
I called the apple store to be sure that they had the battery before I left for my appointment. While on the phone I asked the representive if she thought the battery was covered, she said. " if the applecare was still in effect they may replace it, but I would need to take it to the genius bar." She also, said that if the computer was out of warranty I would most likely have to purchase a new battery. When I arrived for my appointment with the genius, I told him tha my battery was swollen. He said lets take a look. yea I see it is. He then asked me " do you leave it powered on all of the time?" I said no and that I allow it to discharge fully and recharge frequently" He then said " Lets see what we can do." Came back with a new battery, installed it, wrote down some info and said " you are set to go." The key here is what has been said about chance and the genius bar is correct. It really does depend on your relationship with the genius, his or her disposition at the time, and answering the questions correctly. The protocol is that you discharge the battery frequently and fully and then recharge. Also, I think that not leaving the computer turned on for long periods of time without allowing the battery to discharge may have had an impact on his discision. I personally don't think any of that matters. The battery is a compromise in design.
My computer is 2.53 ghz 15 inch late 2008 that I purchased in Jan. of 2009. My apple care ran out this year. So the short of it is: take your mac to the genius bar, have a good attitude. Go in the morning, about 10:00a. Good luck!
I'm really reliefed to see that I'm not the only one with a swollen battery. I didn't even noticed the swelling until my trackpad stopped working. When I took it out the swelling was pretty clear to see. Since my late 2008 Mac Book is out of guarranty and the apple carre plan ran out, too I just ordered a new battery. If you don't want to pay the 129€ for an original Apple battery you can get some good alternatives for half the price.